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Phosphate Solubilisation Potential of Screened Nitrogen Fixing Rhizobium leguminosarum Strains Isolated from Nodules of Pea Plant 从豌豆根瘤中分离的豆科固氮根瘤菌对磷酸盐的增溶潜力
Pub Date : 2019-10-30 DOI: 10.18782/2320-7051.7842
P. Kaur
The present study was undertaken to isolate Rhizobium leguminosarum strains from the nodules of Pea (Pisum sativum (L)) var AP-3 grown in the soil of Hoshiarpur. These isolated nitrogen fixing strains were also tested for their tendency to solubilize Tricalcium Phosphate (TCP) on Pikovskaya (PVK) agar, Modified Pikovskaya (MPVK) agar and National Botanical Research Institute (NBRIP agar). The halo size of R. leguminosarum SS-8 was reported to be biggest (13 mm) on NBRIP agar and the smallest (4 mm) in PVK agar. These strains were further inoculated in PVK and NBRIP broths, respectively to see their potentials to solubilize TCP. The strain R. leguminosarum SS-8 was observed to show maximum TCP solubilisation (261 μg/ml in NBRIP and 211 μg/ml in PVK broths) with maximum decrease in pH (4.14 in NBRIP and 4.20 in PVK
本研究从Hoshiarpur土壤中生长的豌豆(Pisum sativum (L)) var AP-3根瘤中分离出豆科根瘤菌菌株。这些分离的固氮菌株还测试了它们在Pikovskaya (PVK)琼脂、修饰Pikovskaya (MPVK)琼脂和国家植物研究所(NBRIP)琼脂上溶解磷酸三钙(TCP)的倾向。据报道,豆科苜蓿SS-8的光晕大小在NBRIP琼脂上最大(13 mm),在PVK琼脂上最小(4 mm)。将这些菌株分别接种于PVK和NBRIP培养液中,观察它们对TCP的溶解能力。菌株rs . leguminosarum SS-8的TCP增溶率最高(NBRIP为261 μg/ml, PVK为211 μg/ml), pH值最大(NBRIP为4.14,PVK为4.20)
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引用次数: 0
Cane Yield and Sugar Yield Stability in suru Sugarcane (Saccharum officinarum) Genotypes 苏鲁甘蔗(Saccharum officinarum)基因型的产量和糖产量稳定性
Pub Date : 2019-10-30 DOI: 10.18782/2320-7051.7753
T. Bhor
The experimental material comprising of seven new genotypes along with three checks were evaluated in six environments, in Peninsular Zone, Maharashtra, India during 2016-17 and 2017-18. Mean squares due to genotypes were highly significant for cane yield (tha -1 ), CCS yield (tha -1 ), CCS%, sucrose% at harvest, NMC (‘000’ ha -1 ), ACW (kg). The genotypes PDN 13007 and PDN 13011 along with check variety CoM 0265 were found stable for cane yield (tha -1 ). The genotypes PDN 13007 and PDN 13002 along with check variety CoM 0265 was found stable for CCS yield (tha -1 ). The genotype CoVSI 05058 was found stable for CCS% and sucrose% at harvest. The check varieties Co 86032 and CoM 0265 were found below average stability for the trait NMC. Hence, the genotypes PDN 13007 and PDN 13011 promising lines could be recommended for commercial cultivation or could be suitability used in further improvement programme for cane and CCS yield.
在2016-17年和2017-18年期间,在印度马哈拉施特拉邦半岛地区的6个环境中对包括7个新基因型和3个检查的实验材料进行了评估。甘蔗产量(-1)、CCS产量(-1)、CCS%、收获时蔗糖%、NMC (' 000 ' ha -1)、ACW (kg)的均方根极显著。基因型PDN 13007和PDN 13011以及对照品种CoM 0265对甘蔗产量稳定(1)。基因型PDN 13007和PDN 13002以及对照品种com0265对CCS产量稳定(1)。CoVSI 05058基因型在收获时的CCS%和蔗糖%稳定。对照品种co86032和co0265的NMC稳定性低于平均水平。因此,基因型PDN 13007和PDN 13011可以推荐用于商业种植或适合用于甘蔗和CCS产量的进一步改进计划。
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引用次数: 0
Compensating Nitrogen Fertilizer Requirement of desi Wheat by Vermicompost and Azotobacter 蚯蚓堆肥与固氮菌对小麦氮肥需求的补偿
Pub Date : 2019-10-30 DOI: 10.18782/2320-7051.7729
F. Rabi
The aim of the present study was compensating nitrogen fertilizer requirement of desi wheat by vermicompost and Azotobacter. The experiment was conducted during the rabi season of 20172018 at the Agronomy Research Farm of Chaudhary Charan Singh Haryana Agricultural University, Hisar. The soil of the experimental field is sandy loam in texture, slightly alkaline in reaction, low in organic carbon and nitrogen, medium in available phosphorus and potassium. The experiment was laid out in Randomized Block Design replicated thrice with ten treatments viz. T1 (Control) , T2 (Vermicompost @ 6 t ha -1 ) , T3 (Azotobacter + Vermicompost @ 6 t ha -1 ), T4 (30 kg N ha -1 + Vermicompost @ 3 t ha -1 ), T5 (40 kg N ha -1 + Vermicompost @ 2 t ha -1 ), T6 (50 kg N ha -1 + Vermicompost @ 1 t ha -1 ), T7 (30 kg N ha -1 + Azotobacter + Vermicompost @ 3 t ha -1 ) , T8 (40 kg N ha -1 + Azotobacter + Vermicompost @ 2 t ha -1 ), T9 (50 kg N ha -1 + Azotobacter + Vermicompost @ 1 t ha -1 ) and T10 (60 kg N ha -1 ). Among various combinations of nitrogen fertilizer, vermicompost and Azotobacter treatments T10 recorded significantly higher yield attributing characters like number of grains per spike, number of spikelets per spike and spike length, grain, straw and biological yield of desi wheat. But various treatments failed to produce any significant variation in 1000 grain weight of desi wheat.
研究了蚯蚓堆肥和固氮细菌对小麦氮肥需求的补偿。该试验于2017 - 2018年的拉比季节在希萨尔乔杜里·查兰·辛格哈里亚纳邦农业大学农学研究农场进行。试验田土壤质地为砂壤土,反应性微碱性,有机碳氮含量低,速效磷钾含量中等。实验是在随机区组设计复制三次十治疗即T1(控制),T2 (Vermicompost @ 6 t 1公顷),T3(固氮菌+ Vermicompost @ 6 t 1公顷),T4(30公斤N公顷1 + Vermicompost @ 3 t 1公顷),T5(40公斤N公顷1 + Vermicompost @ 2 t 1公顷),T6(50公斤N哈1 + Vermicompost @ 1 t哈1),T7(30公斤N哈1 +固氮菌+ Vermicompost @ 3 t哈1),T8(40公斤N哈1 +固氮菌+ Vermicompost @ 2 t哈1),T9(50公斤N公顷-1 +固氮菌+蚯蚓堆肥@ 1公斤N公顷-1)和T10(60公斤N公顷-1)。在不同氮肥、蚯蚓堆肥和固氮菌组合处理中,T10的单穗粒数、单穗粒数和穗长、籽粒、秸秆和生物产量等产量属性均显著高于其他处理。但不同处理对德西小麦千粒重的影响不显著。
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引用次数: 0
Seasonal Incidence of Whitefly and Aphid on Tomato Crop at Tarai Region of Uttrakhand 北阿坎德邦塔莱地区番茄作物粉虱和蚜虫的季节性发病率
Pub Date : 2019-10-30 DOI: 10.18782/2320-7051.7667
N. Rawat
The present investigation was carried out during 2015-2016 at Vegetable Research center, G.B. Pant University of Agriculture and Technology, Pantnagar . The trial was conducted to know the seasonal population dynamics of whitefly and aphid in tomato (Lakshmi hybrid1) and their relation to weather parameters. The results found that incidence of the Bemisia tabaci occurred from 39 th standard meteorological week (SMW) 2015 to 7 th standard meteorological week. Maximum population of whitefly was recorded during first week of October with incidence upto the last week of May. Simple correlation worked out between the weather parameters and the population of Bemisia tabaci revealed that there was non-significant negative correlation with morning relative humidity, rainfall, sunshine hours, maximum and minimum temperature but significant negative correlation with evening relative humidity. However, wind velocity exhibited a positive non-significant correlation with whitefly population during crop season while the incidence of the aphid spp was noticed from 40 th standard meteorological week (SMW) 2016 to 7 th standard meteorological week 2016. Persistent high population was noticed from 40 th to 43 rd (SMW) Simple correlation worked out between the weather parameters and population of Aphis gossypii revealed that there was non significant positive correlation with maximum and minimum temperature and sunshine hour, while maximum relative humidity, wind velocity, rainfall and minimum relative humidity showed non significant negative correlation with aphid population during crop season 2015-2016.
本调查于2015-2016年在潘特纳格尔G.B.潘特农业技术大学蔬菜研究中心进行。为了解白蝇和蚜虫在番茄(Lakshmi hybrid1)上的季节性种群动态及其与天气参数的关系,进行了试验。结果发现,2015年第39个标准气象周(SMW)至第7个标准气象周(SMW)发生烟粉虱。白蝇在10月第一周达到高峰,发病时间一直持续到5月最后一周。对气象参数与烟粉虱种群进行了简单的相关分析,结果表明:清晨相对湿度、降雨量、日照时数、最高和最低温度与烟粉虱种群呈不显著负相关,而与夜晚相对湿度呈显著负相关。而在作物季节,风速与粉虱种群呈非显著正相关,而在2016年第40至第7个标准气象周期间,蚜虫的发病率呈显著上升趋势。结果表明,2015-2016年作物季节棉蚜种群数量与气象参数之间存在着不显著的正相关关系,与最高、最低温度、日照时数存在不显著的正相关关系,与最大相对湿度、风速、降雨量、最小相对湿度存在不显著的负相关关系。
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引用次数: 1
Comparative Efficacy of Newer Insecticides against Plutella xylostella and Spodoptera litura on Cauliflower under Laboratory Conditions 新型杀虫剂对菜花小菜蛾和斜纹夜蛾的室内药效比较
Pub Date : 2019-10-30 DOI: 10.18782/2320-7051.7796
M. Ramzan
Cabbages and cauliflowers are the most important winter vegetables cultivated mainly in tropical and temperate areas of the globe. Armyworm, Spodoptera litura and Diamondback moth (DBM), Plutella xylostella are the most economic and destructive insect pest for cabbage and cauliflower. The current study was conducted to investigate three new insecticides such as emamectin benzoate, lufenuron and profenofos against two lepidopteran insect pests; Spodoptera litura and Plutella xylostella at different larval instars during 2018 under laboratory conditions. For this purpose, randomized complete design and leaf dip method was used. The current study was resulted that Emamectin benzoate proved to be effective one with significantly higher level of morality followed by profenofos and lufenuron after 48 and 72 hours respectively. Emamectin benzoate can be recommended as the most toxic insecticides against both Spodoptera litura and Plutella xylostella populations along with profenofos.
卷心菜和花椰菜是最重要的冬季蔬菜,主要在全球热带和温带地区种植。粘虫、斜纹夜蛾和小菜蛾是白菜和菜花最具经济和破坏性的害虫。本试验研究了甲维菌素苯甲酸酯、氟虫腈和丙诺威3种新型杀虫剂对鳞翅目2种害虫的防治效果;实验条件下2018年不同龄期斜纹夜蛾和小菜蛾的幼虫特征。为此,采用随机完全设计和叶片浸渍法。本研究结果表明,苯甲酸酯是有效的,在48小时和72小时后,其道德水平显著高于丙诺福,其次是氟虫腈。甲维菌素苯甲酸酯可与异丙威作为对斜纹夜蛾和小菜蛾最具毒性的杀虫剂。
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引用次数: 18
Screening of Soybean (Glycine max L. Merril) Genotypes for Resistance against Major Insect-Pests 大豆(Glycine max L. Merril)抗主要害虫基因型的筛选
Pub Date : 2019-10-30 DOI: 10.18782/2320-7051.7625
Yoodarimiki Shylla
A study was conducted in the experimental farm of SASRD, Nagaland University during Kharif 2017 in order to screen soybean genotypes for resistance against major insect pests using two replications. Forty one soybean genotypes along with five check varieties were arranged in RBD. The major insect pests observed at weekly intervals were leaf webber (Anarsia ephippias), aphid (Aphis glycines), leaf hopper (Bothrogonia indistincta), Pod bug (Riptortus pedestris) and blister beetle (Mylabris phalerata). The genotypes NRC 134 (4.20 no/mrl) and JS 20-17 (0.70 no/mrl) showed highest and lowest infestation by leaf webber. Highest infestation of aphid was found on PS 1613 (21.85no/3leaf) and lowest was found on AMS 100-39 (1.50 no/3leaf). In case of leaf hopper, the highest infestation was found on NRC 137 (4.75no/3leaf) and the lowest infestation was found on DSb 34 (1.08 no/3leaf). Genotypes namely NRC 137 (5.88 no/mrl) showed highest infestation and genotype JS 21-15 (1.23 no/mrl) showed lowest infestation by blister beetle. For pod bug, genotype CSB 10112 (5.90 no/mrl) showed highest infestation and NRC 128 (0.12 no/mrl) showed lowest infestation. The highest yield was reported by TS 53 (3155 kg/ha) and lowest was NRC 131 (488.88 kg/ha). Cluster analysis was used to group line based on five major soybean insect pests (leaf webber, aphid, leaf hopper, blister beetle and pod bug) infestation levels within the site and found that Cluster V (TS 53, SL 1123, SKF-SPS-11) was considered the resistant cluster with highest yield, where the best performing genotypes were included.
2017年哈里夫期间,在那加兰邦大学SASRD实验农场进行了一项研究,目的是通过两个重复筛选大豆对主要害虫的抗性基因型。在RBD中安排了41个大豆基因型和5个检验品种。以周为单位观察到的主要害虫为叶蝉(Anarsia ephippias)、蚜虫(Aphis glycines)、跳叶虫(Bothrogonia indeincta)、足蝽(Riptortus pestris)和水疱甲虫(Mylabris phalerata)。NRC 134 (4.20 no/mrl)和JS 20-17 (0.70 no/mrl)的侵染率最高和最低。蚜虫侵染率最高的是PS 1613 (21.85no/3叶),最低的是AMS 100-39 (1.50 no/3叶)。在叶跳虫中,NRC 137的侵染率最高(4.75no/3), DSb 34的侵染率最低(1.08 no/3)。基因型NRC 137 (5.88 no/mrl)侵染率最高,基因型JS 21-15 (1.23 no/mrl)侵染率最低。其中,CSB 10112 (5.90 no/mrl)侵染率最高,NRC 128 (0.12 no/mrl)最低。产量最高的品种是TS 53 (3155 kg/ha),最低的品种是NRC 131 (488.88 kg/ha)。采用聚类分析方法,对大豆5种主要害虫(叶织网虫、蚜虫、跳叶虫、水蚤和豆荚虫)的侵染水平进行分类,发现聚类V (TS 53、SL 1123、SKF-SPS-11)被认为是产量最高的抗性聚类,其中包括表现最好的基因型。
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引用次数: 0
Development of Cereal Flakes from Papaya (Carica papaya L.) and it’s Quality Evaluation During Storage 木瓜谷片的研制及贮藏质量评价
Pub Date : 2019-10-30 DOI: 10.18782/2320-7051.7604
S. Attri, N. Forestry
In the present investigation, various treatment combinations were optimized for the preparation of papaya fruit flakes. For the standardization of papaya cereal flakes three different recipes were tried with various combinations of papaya pulp, maida flour (100 %), corn flour (100 %), maida flour and corn flour in combination (70:30) for the development of papaya cereal flakes. Papaya cereal flakes prepared by using different combinations of both flours were compared on the basis of sensory evaluation with standard recipe in which maida was used. Papaya cereal flakes (T3) prepared using papaya pulp2.5 Kg, maida and corn flour in 70:30 ratio -(220.5 +94.5) g, sucrose150 g, glucose-150 g, pectin3.65 g, water250 ml, CaCO3-3 g was rated best on the basis of sensory evaluation. Further the prepared product were packed in aluminium laminated pouches and stored for 6 months under ambient temperature conditions. The various quality characteristics such as moisture, total soluble solids, titratable acidity, ascorbic acid, total sugars, reducing sugars, ash, fibre and carotenoids, were analyzed at 0, 3 and 6 months interval. The stored papaya-cereal flakes had better quality in terms of color, flavor, texture, overall acceptability and also have better retention of all quality characteristics at ambient temperature conditions. Thus papaya-cereal flakes could be stored successfully without any significant changes in quality characteristics at ambient temperature conditions for 6 months in aluminium laminated pouches.
本研究对木瓜果片的制备工艺进行了优化。为使番木瓜谷物片标准化,试验了三种不同的配方,木瓜浆与麦芽粉(100%)、玉米粉(100%)、麦芽粉与玉米粉(70:30)的不同组合,以开发番木瓜谷物片。在感官评价的基础上,对两种面粉不同组合制备的木瓜谷片进行了比较。感官评价以木瓜果肉2.5 Kg、玉米和玉米粉以70:30的比例-(220.5 +94.5)g、蔗糖150 g、葡萄糖150 g、果胶3.65 g、水250 ml、碳酸钙3-3 g配制的木瓜谷片(T3)为最佳。将制备的产品包装在铝层压袋中,在常温条件下保存6个月。在0、3和6个月的时间间隔内分析了各种品质特征,如水分、总可溶性固形物、可滴定酸度、抗坏血酸、总糖、还原糖、灰分、纤维和类胡萝卜素。贮藏后的木瓜谷片在色、味、质、总体可接受性等方面具有较好的品质,在常温条件下各项品质特征的保持性也较好。因此,木瓜谷物片可以在铝层压袋中成功储存6个月,在室温条件下没有任何明显的质量变化。
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引用次数: 1
Effect of Organic Farming Practices on Yield of Basmati Rice and Soil Properties in Rice, Wheat Cropping System 有机耕作方式对巴斯马蒂稻产量及稻麦混作系统土壤性质的影响
Pub Date : 2019-10-30 DOI: 10.18782/2320-7051.7745
Kundan Kumar
This paper analyzes the management of soil organic matter is critical to maintain a productive organic farming system. No one source of nutrient usually suffices to maintain productivity and quality control in organic system. In addition, the inputs to supplement nutrient availability are often not uniform presenting additional challenges in meeting the nutrient requirement of crops in organic systems. With this concept, a field experiment was conducted at village Jahangirpur in Jewar Tehsil in Gautam Buddha Nagar district of Uttar Pradesh during 2014-2016 in rice-wheat cropping system. In this experiment, different treatments comprising organic amendments such as Blue Green Algae (BGA) 15kg/ha, SGM 10.0 tonne/ha, and Farm Yard Manure (FYM) 10.0 tonne/ha each applied alone or in combination were tested in organic crop production. These treatments were compared with absolute control (N0P0K0). For rice, a scented variety ‘Pusa Basmati 1’ were taken. The observations on grain yield, contents of Fe, Zn, Mn and Cu in rice grains, insect pest incidence, soil nutrients and microbial activity were taken. Results revealed a significant enhancement in grain yield of rice over absolute control due to the application of different organic amendments applied alone or in combinations. Rice grain yield increased by 114 to 116.8% over absolute control when all the 4 organic amendments were applied altogether. The rice grain yield (4.0 t ha-1) obtained under combined application of four organic amendments was at par with the yield recorded under recommended dose of chemical fertilizer application. An interesting observation recorded was that there was no serious attack of any insect pest or disease in organically grown crop. Soil microbial population (Actinomycetes, Bacteria, Fungi and BGA) enhanced due to the application of organic amendments in comparison to absolute control application that in turn resulted in a notable enhancement in soil dehydrogenase and phosphatase enzyme activity. Soil organic carbon and available phosphorus contents were also found to be significantly increased due to organic farming practice over control. Rice grain analysis for nutrients viz. Fe, Zn, Mn and Cu showed a significant increase in Fe and Mn content in the treatments having 2 or more organic amendments over control. Zn and Cu content also increased but the increment was significant with combined application of 2 or 3 organic amendments. The study revealed that addition of three organic amendments viz. BGA, SGM, and FYM could give the optimum yield (4.05 t/ha) of organic Basmati rice and improve grain and soil quality.
本文分析了土壤有机质的管理是维持有机农业高产的关键。在有机系统中,通常没有一种营养来源足以维持生产力和质量控制。此外,用于补充养分有效性的投入往往不统一,这在满足有机系统中作物的养分需求方面提出了额外的挑战。2014-2016年,在北方邦Gautam Buddha Nagar地区Jewar Tehsil的Jahangirpur村进行了水稻-小麦种植系统的田间试验。在本试验中,分别单独或联合施用蓝绿藻(BGA) 15kg/ha、SGM 10.0 t /ha和农场厩肥(FYM) 10.0 t /ha等不同有机改良剂,对有机作物生产进行了试验。将这些处理与绝对对照(N0P0K0)进行比较。至于大米,则采用了一种有香味的品种“Pusa Basmati 1”。对水稻产量、籽粒铁、锌、锰、铜含量、害虫发生率、土壤养分和微生物活性进行了观察。结果表明,与绝对控制相比,单独或联合施用不同有机改良剂对水稻产量有显著提高。同时施用4种有机改良剂,水稻产量比绝对对照提高了114 ~ 116.8%。4种有机改良剂配施水稻籽粒产量(4.0 t hm -1)与化肥推荐用量下记录的产量相当。一个有趣的观察记录是,没有任何害虫或疾病的严重袭击有机种植的作物。土壤微生物数量(放线菌、细菌、真菌和BGA)的增加是由于施用有机添加剂而不是绝对对照,从而导致土壤脱氢酶和磷酸酶活性的显著提高。土壤有机碳和速效磷含量也因有机耕作方式而显著高于对照。水稻籽粒铁、锌、锰、铜营养物质分析表明,有机改性2种及以上处理的铁、锰含量显著高于对照。Zn和Cu的含量也有所增加,但2种或3种有机改进剂联合施用时增加幅度较大。研究表明,添加BGA、SGM和FYM 3种有机改良剂可使有机巴斯马提水稻获得最佳产量(4.05 t/ hm2),并改善籽粒和土壤质量。
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引用次数: 0
Assessment of Genetic Variability for Qualitative and Quantitative Traits in Local Rice Cultivars of Gudalur Valley of the Nilgiris Nilgiris Gudalur河谷地方水稻品种质量和数量性状遗传变异评价
Pub Date : 2019-10-30 DOI: 10.18782/2320-7051.7494
D. Kumaresan
In the present study, characterization of 21 local rice genotypes was carried out for 16 DUS characters. The leaf and leaf sheath anthocyanin coloration was absent in all the genotypes. A total of eight traits viz., leaf pubescence of blade surface, leaf length of blade, leaf width of blade, flag leaf, panicle awns, panicle presence of secondary branching, panicle secondary branching and panicle exertion were dimorphic. Three traits basal leaf sheath colour, leaf intensity of green colour, culm attitude were found to be trimorphic. Remaining three traits namely flag leaf attitude of blade, panicle curvature of main axis and panicle attitude of branches were found to be tetramorphic. The genotype mundamaranellu was found to be distinct for erect culm, erect flag leaf and presence of awns and these genotypes can be used as donor for rice breeding program. The cultivars Thondi and mullampunchan (106 days) were found to be early on days to 50% flowering among all the genotypes evaluated. All genotypes exhibited significant differences for eight quantitative traits. The high PCV and GCV was recorded for plant height, number of productive tillers and single plant yield. The highest heritability and high genetic advance as per cent of mean was observed in plant height, number of panicles per plant, number of productive tillers, 1000grain weight, single plant yield and these characters could be further improved by following simple selection procedure.
本研究对21个地方水稻基因型的16个DUS性状进行了鉴定。所有基因型均不存在叶片和叶鞘花青素着色。叶片表面短柔毛、叶片长度、叶片宽度、旗叶、穗芒、穗存在次生分支、穗次生分支和穗用力等8个性状均为二态。基叶鞘颜色、叶片绿色强度、秆姿三个性状均为三形。其余3个性状即叶片的旗叶姿态、主轴的穗曲率和分枝的穗姿态均为四态性。该基因型在直立秆、直立旗叶和存在芒上具有明显的差异,这些基因型可以作为水稻育种的供体。在所有被评价的基因型中,品种通迪和毛兰蓬灿(106天)的开花期早至50%。各基因型在8个数量性状上差异显著。在株高、有效分蘖数和单株产量方面均录得较高的PCV和GCV。株高、单株穗数、有效分蘖数、千粒重、单株产量的遗传力和遗传进步最高,占平均水平的百分比,这些性状可以通过简单的选择程序进一步提高。
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引用次数: 0
Estimation of Reference Evapotranspiration (ET0) for Gird Region of Madhya Pradesh 中央邦网格区参考蒸散发(ET0)估算
Pub Date : 2019-10-30 DOI: 10.18782/2320-7051.7765
Y. P. Singh
The reference evapotranspiration (ET0) for three district in Madhya Pradesh have been estimated using three evapotranspiration based methods like Hargreaves Samani, Caprio, trabert and Makkink-Hansen under local conditions. Comparison was also made between the estimated ET0 by using different evapotranspiration based method and the observed ET0 by using FAO-56PM Method. Regression analysis revealed that estimated ET0 values were highly correlated with observed ET0 values. In addition, linear regression relationships between ET0 values estimated by the Penman monteith method and other methods were determined. The result of this study shows that the travert method can be indicate the best result compression to other method and this method could be used for the estimation of ET0 values in all district in the gird region of Madhya Pradesh. Keyword: Reference Evapotranspiration by FAO-56 Penman Monteith, other ET0 methods and Gird region. Research Article Cite this article: Singh, Y. P., Mittal, H.K., Singh, P.K., & Bhakar, S.R. (2019). Estimation of Reference Evapotranspiration (ET0) for Gird Region of Madhya Pradesh, Ind. J. Pure App. Biosci. 7(5), 487-492. doi: http://dx.doi.org/10.18782/2320-7051.7765 Singh et al. Ind. J. Pure App. Biosci. (2019) 7(5), 487-492 ISSN: 2582 – 2845 Copyright © Sept.-Oct., 2019; IJPAB 488 The estimation of reference evapotranspiration (ET0) involves calculating the potential evapotranspiration (ET) or the actual evapotranspiration (ET), and then applying a suitable crop coefficient (Kc). Potential ET is defined as the rate at which water would be removed from wet soil and plant surfaces expressed as the rate of latent heat transfer per unit area, or as a depth of water per unit time. ET0 is defined as the rate at which water would be removed from the soil and plant surfaces expressed as the rate of latent heat transfer per unit area, or as a depth of water per unit time evaporated and transpired from a reference crop. The use of ET0 for a specified crop surface has largely replaced the use of the more general potential crop ET. This is because of the ambiguities involved in the interpretation of potential ET. Also, the use of a reference crop ET permits a physically realistic characterization of the effect of the microclimate of a field on the evaporative transfer of water from the soilplant system to the atmospheric air layers overlying the field (Uright, 1996). Numerous scientists and specialists worldwide was developed many methods for estimating of reference evapotranspiration (ET0) over the last 50 years. These methods were subject to rigorous local calibration and proved to have limited global validity (Smith et al., 1996). Doorenbos & Pruitt (1977) adopted the concept ETc and adjusted several existing methods to yield identical ET0 estimates varying from complex energy balance techniques requiring detailed climatological data to simpler methods with limited data requirements. The accuracy of ET0 estimates depend
利用Hargreaves Samani、Caprio、trabert和Makkink-Hansen三种基于蒸散发的方法在当地条件下估算了中央邦三个地区的参考蒸散发(ET0)。采用不同蒸散发方法估算的蒸散量与采用FAO-56PM方法观测到的蒸散量进行了比较。回归分析显示,估算ET0值与观测ET0值高度相关。此外,还确定了Penman monteith方法估算的ET0值与其他方法之间的线性回归关系。研究结果表明,该方法对其他方法的压缩效果最好,可用于中央邦网格地区所有地区的ET0估计。关键词:参考蒸散发FAO-56 Penman Monteith,其他ET0方法和网格区域。本文引用:Singh, yp ., Mittal, h.k., Singh, p.k., & Bhakar, S.R.(2019)。[j] .中央邦网格区参考蒸散发(ET0)估算[j] .应用生态学报,7(5),487-492。doi: http://dx.doi.org/10.18782/2320-7051.7765 Singh et al。J.纯应用。生物科学。(2019) 7(5), 487-492 ISSN: 2582 - 2845版权所有©, 2019;参考蒸散发(ET0)的估算包括计算潜在蒸散发(ET)或实际蒸散发(ET),然后应用合适的作物系数(Kc)。潜在蒸散发被定义为水分从潮湿土壤和植物表面流失的速率,以单位面积的潜热传递速率或单位时间的水深度表示。ET0的定义是水分从土壤和植物表面流失的速率,以单位面积的潜热传递速率表示,或以单位时间内从参考作物中蒸发和蒸腾的水深度表示。对特定作物表面的蒸散发值的使用已经在很大程度上取代了对更普遍的潜在作物蒸散发的使用。这是因为潜在蒸散发的解释存在模糊性。此外,使用参考作物蒸散发可以从物理上真实地描述农田小气候对土壤系统向覆盖在农田上的大气气层的水分蒸发转移的影响(Uright, 1996)。在过去的50年里,世界上许多科学家和专家开发了许多估算参考蒸散发(ET0)的方法。这些方法需要经过严格的局部校准,并被证明具有有限的全局有效性(Smith et al., 1996)。Doorenbos & Pruitt(1977)采用ETc概念,并调整了几种现有方法,从需要详细气候数据的复杂能量平衡技术到数据要求有限的简单方法,得出了相同的ET0估计。ET0估算的准确性主要取决于所使用的方法描述控制过程的物理规律的能力以及气象和种植数据的准确性(Jensen等,1990年)。由于现有的利用气象资料估算ETc的方法涉及经验关系,因此对于任何选择的方法,都建议进行一些局部或区域的验证或校准。Tanner(1967)强调,任何估算ET0的经验方程都需要校准,特别是在亚热带和半干旱地区,因为来自干燥环境的形容词能量增加了ETc。已经进行了一些研究来计算中央邦一些选定地区的蒸散发值(Saeed 1986;Al-Omran和Shalaby 1992;Mohammad and Abo-Ghobar 1994;)。以往的研究主要集中在中东部地区,文献缺乏对被认为是印度主要农业区的中央邦中部地区的ET0估算。因此,本研究的目的是利用四种不同的基于ET0的方法确定中央邦网格地区四个主要地点即Ashok Nagar、Shivpuri和bind(亚热带条件)的ET0。此外,将不同地点的估算ET0与估算值和观测值进行了比较。材料与方法本研究收集了2004-2014年中央邦Ashok Nagar、bind和Shivpuri地区全球气象数据站点7月11日(2004-2014年)的月平均气候数据,即最高温度(Tmax)、最低温度(Tmin)、平均相对湿度(RHmean)、太阳辐射(Sr)和风速(WS)。其他参数如地理位置,即纬度和经度,如表1所示。 表1:研究区选定站点的详细情况地区经度(E)纬度(N)海拔(m) Ashok Nagar 77°43′E 24°34′N 499 bind 78°48′E 26°34′N 159 Shivpuri 77°39′E 25°25′N 457 Singh等。J.纯应用。生物科学。(2019) 7(5), 487-492 ISSN: 2582 - 2845版权所有©, 2019;在选择计算ET0的方法时,气象资料的可得性是一个主要考虑因素。为特定位置选择适当的方法是一项困难的任务,因为没有唯一的指导方针可用于定义最有可能给出最佳估计的应用方法。本研究考虑的方法包括从基于温度、辐射和质量传递的方法到更数据密集的组合方法。方法有:(1)FAO-56 Penman monteith法;(2) Jensen-Haise (JH)法;(3) c a p r io法(4)traver法(5)网区气候条件Hargreaves-samani (H-S)法。本研究选择这些方法来估算各地区的蒸散量,并对它们进行比较,以选择最适合各地区的方法。FAO-56 Penman Monteith method根据Allen et al.(1998),由气动项和表面阻力项组成的FAO56-PM模型的推荐形式为:
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International Journal of Pure & Applied Bioscience
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