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Utilization of phytohormones for successful crop production under environmental stress conditions 环境胁迫条件下植物激素在作物成功生产中的应用
Pub Date : 2021-12-14 DOI: 10.25081/jsa.2021.v5.7281
Mohammad Hussain Faiq, Dr. Mohammad Safar Noori
Stress is an external factor that exerts a detrimental effect on overall growth of a plant. Environmental stress is a serious threat for sustainable crop production, and a main cause for food insecurity. Agricultural crops are exposed to a variety of environmental stresses including extreme temperatures and unfavorable chemical and physical soil conditions. Drought stress adversely affects some physiological and biochemical processes in plants, including transpiration, translocation of assimilates and nutrient metabolism. Salinity stress is responsible for loss of turgor, reduction in growth, wilting, leaf abscission, reduction in photosynthesis and respiration, loss of cellular integrity, tissue necrosis and finally death of the plant. Drought and salinity stress negatively affects the growth and yield of crop plants more than all the other stresses combined. Cold stress affects cellular components and metabolism, and temperature extremes impose stresses of variable severity that depend on the intensity and duration of the stress. Many approaches are being used to alleviate the deleterious effects of environmental stresses on successful agricultural crops production in recent years.  Application of phytohormones (Abscisic acid, Indole-3-Aacetic Acid, Jasmonic acid and salicylic acid) is one of the curative measures to mitigate the environmental stresses in agricultural crops. Phytohormones play a significant role in enhancing stress tolerance and therefore, reduce the yield loss in crop plants. In this paper, the impacts of environmental stresses on productivity and physiological activities of crop plants, and the effective role of some phytohormones in alleviation of environmental stresses have been reviewed.
胁迫是一种外部因素,对植物的整体生长产生不利影响。环境压力是对可持续作物生产的严重威胁,也是粮食不安全的主要原因。农作物暴露在各种环境胁迫下,包括极端温度和不利的化学和物理土壤条件。干旱胁迫对植物的一些生理生化过程产生不利影响,包括蒸腾作用、同化物转运和养分代谢。盐胁迫导致植物失去膨大,生长减少,枯萎,叶片脱落,光合作用和呼吸作用减少,细胞完整性丧失,组织坏死,最终死亡。干旱和盐胁迫对作物生长和产量的负面影响大于其他所有胁迫的总和。冷应激影响细胞成分和新陈代谢,极端温度施加的压力的严重程度取决于压力的强度和持续时间。近年来,人们采用了许多方法来减轻环境压力对农作物成功生产的有害影响。植物激素(脱落酸、吲哚-3-乙酸、茉莉酸和水杨酸)的应用是缓解农作物环境胁迫的治疗措施之一。植物激素在提高作物的抗逆性和减少产量损失方面起着重要作用。本文综述了环境胁迫对作物生产力和生理活动的影响,以及一些植物激素在缓解环境胁迫中的有效作用。
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引用次数: 1
Optimum planting date for the maximum tuber yield of tropical sugar beet (Beta vulgaris L.) genotypes in the Old Brahmaputra Floodplain 旧雅鲁藏布江漫滩热带甜菜(Beta vulgaris L.)基因型块茎最高产量的最佳种植日期
Pub Date : 2021-07-17 DOI: 10.25081/jsa.2021.v5.6904
M. Hossain, M. Kader, M. Kashem
Planting dates for a crop is a non-monetary input but plays a significant role in increasing the yield crop. Therefore, identifying genotype-specific planting dates is essential for obtaining the economic yield of tropical sugar beet. From this perspective, a field experiment was conducted at the Agronomy Field Laboratory, Bangladesh Agricultural University in  Bangladesh, from November 2015 to April 2016. Five sugar beet genotypes: Shubhra, Cauvery, EB-0616, EB-0626, and EB-0809 planted on four dates: 10, 20, 30 November, and 10 December. Treatments were laid out in a split-plot design replicated three times. Data revealed that planting on 10 November date, genotype EB-0809 produced the highest tuber yield, which was significantly superior to any other genotype combined with other planting dates. It was found that every ten days delay of planting from 10 November to 30 December reduced the tuber yield by 30, 43, and 55%, respectively. Results confirmed that planting the EB-0809 genotype on 10 November is ideal to obtain the highest tuber yield of tropical sugar beet in Bangladesh.
作物的种植日期是一种非货币性投入,但在提高作物产量方面发挥着重要作用。因此,确定特定基因型的种植日期对于获得热带甜菜的经济产量至关重要。为此,我们于2015年11月至2016年4月在孟加拉国农业大学农学田间实验室进行了田间试验。5种甜菜基因型:Shubhra、Cauvery、EB-0616、EB-0626和EB-0809,分别在11月10日、20日、30日和12月10日种植。处理被放置在一个分裂的设计重复三次。数据显示,在11月10日种植,EB-0809基因型块茎产量最高,显著优于其他基因型与其他种植日期的组合。结果表明,从11月10日推迟到12月30日,每推迟10天,块茎产量分别下降30%、43%和55%。结果证实,在11月10日种植EB-0809基因型是获得孟加拉国热带甜菜块茎最高产量的理想选择。
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引用次数: 1
Transportation of Chromium (VI) to Bombyx mori L. from mulberry Plant (Morus alba L.) grown at soil irrigated with Chromium (VI) containing effluents 在含铬废水灌溉的土壤中生长的桑树(Morus alba L.)向家蚕(Bombyx mori L.)运送铬(VI)
Pub Date : 2021-07-07 DOI: 10.25081/JSA.2021.V5.5479
Majid Ali, M. Alamgeer, M. A. Qayyum, Khuram Zia, M. Ashfaq, Muhammad Asad Saleem
The research was conducted to determine Chromium (VI) toxicity in population Bombyx mori. The synthetic wastewater used to irrigate soil to evaluate the impact of pH (4 to 8) at 100 mg/L and initial Chromium (VI) concentrations (25 mg/L to 300 mg/L) at 5 pH in its bioaccumulation in B. mori foodchain.  By using atomic absorption spectrophotometer (AAS) analysis the amount of Chromium (VI) determined in soil, mulberry plants, B. mori larvae, silk glands and silkworm feces. The results showed that local cobalt pollution can be indicated by using B. mori as a template as its body length, body weight and the mortality rate were found to be strongly related to Chromium (VI) concentration. Higher the Chromium (VI) amount in mulberry leaves causes more toxicity to B. mori population. At 300 mg/L Cr (VI) concentration and pH 4 there was maximum deposition of Chromium (VI) in soil, mulberry plants, B. mori larvae, faeces and silk glands from the synthetic effluent. The maximum deposition was 123.5±0.03 mg/kg, 89.76±.031 mg/kg, 23.31±0.019 mg/kg, 41.32±0.069 mg/kg and 35.67±0.04 mg/kg observed respectively.
对家蚕种群进行了六价铬毒性测定。利用人工合成废水灌溉土壤,评价pH(4 ~ 8)为100 mg/L和初始铬(VI)浓度(25 ~ 300 mg/L)为5 pH时对家蚕食物链生物积累的影响。采用原子吸收分光光度计(AAS)对土壤、桑树、桑蚕幼虫、蚕腺和家蚕粪便中铬(VI)的含量进行了分析。结果表明,家蚕体长、体重和死亡率与铬(VI)浓度密切相关,可作为当地钴污染的模板。桑叶中铬(VI)含量越高,对家蚕种群的毒性越大。在300 mg/L Cr (VI)浓度和pH值为4时,土壤、桑树、家蚕幼虫、粪便和合成出水丝腺中铬(VI)的沉积量最大。最大沉积量为123.5±0.03 mg/kg, 89.76±。分别为031 mg/kg、23.31±0.019 mg/kg、41.32±0.069 mg/kg和35.67±0.04 mg/kg。
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引用次数: 0
Effect of phosphorus and potassium on the growth and yield of French bean 磷、钾对豆荚生长和产量的影响
Pub Date : 2020-10-17 DOI: 10.25081/jsa.2020.v4.6428
Saedy Karim, F. Uddin, H. Rashid, M. Hadiuzzaman
An experiment was conducted at the Agronomy Field Laboratory of the Department of Agronomy, Bangladesh Agricultural University, Mymensingh to investigate the yield response of French bean (Phaseolus vulgaris L.) as affected by phosphorus and potassium management. The experiment consisted of two factors. Factor A: Phosphorus fertilizer (4 levels) viz. P1=15Kg P ha-1, P2=20 Kg P ha-1 and P3=25 Kg P ha-1 , P4=35 Kg P ha-1 and factor B: Potassium fertilizer (4 levels) viz. K1=0 Kg K ha-1, K2=20 Kg K ha-1, K3=30 Kg K ha-1 and K4=40 Kg K ha-1. The variety BARI Jharsheem-3 was used in this experiment as the test crop. The experiment was laid out in a randomized complete block design (RCBD) with three replications. In case of phosphorus @ 25 kg ha-1  the highest number of pods plant-1 (4.96), pod length (13.34 cm), number of seeds pod-1 (4.54), weight of 1000-seed (431.21 g), seed yield (1.33 t ha-1), stover yield (1.53 t ha-1), biological yield (2.86 t ha-1) and harvest index 46.50%  were found. In case of potassium @ 40 kg ha-1, he highest number of pods plant-1 (5.80), pod length (14.89 cm), number of seeds pod-1 (4.24), weight of 1000-seed (430.37 g), seed yield (1.53 t ha-1 ), stover yield (1.46 t ha-1 ), biological yield (2.99 t ha-1) and harvest index 51.17% were found. Interaction effect of phosphorus and potassium the highest  number of pods plant-1 (5.18), pod length (13.40 cm), number of seeds pod-1 (4.30), weight of 1000-seed (430.53 g), seed yield (1.40 t ha-1 ), stover yield (1.60 t ha-1 ), biological yield (3.00 t ha-1 ) and harvest index 46.66% were recorded from P @ 25 kg ha-1 and K @ 40 kg ha-1. However, from the study it can be concluded that application of P @ 25 kg ha-1 and K @ 40 kg ha-1 was the most suitable combination for better yield of French bean.
在孟加拉国农业大学农学系农艺田间实验室进行了试验,研究了磷钾管理对法国豆(Phaseolus vulgaris L.)产量的影响。这个实验包括两个因素。因子A:磷肥(4级),即P1=15Kg磷肥-1,P2= 20kg磷肥-1,P3= 25kg磷肥-1,P4= 35kg磷肥-1;因子B:钾肥(4级),即K1= 0kg磷肥-1,K2= 20kg磷肥-1,K3= 30kg磷肥-1,K4= 40kg磷肥-1。本试验选用品种BARI Jharsheem-3作为试验作物。试验采用随机完全区组设计(RCBD), 3个重复。磷浓度为25 kg hm -1时,单株荚果数(4.96)、荚果长(13.34 cm)、荚果数(4.54)、千粒重(431.21 g)、籽粒产量(1.33 t hm -1)、秸秆产量(1.53 t hm -1)、生物产量(2.86 t hm -1)和收获指数(46.50%)最高。在钾浓度为40 kg hm -1时,单株荚果数(5.80)、荚果长(14.89 cm)、籽粒数(4.24)、千粒重(430.37 g)、籽粒产量(1.53 t hm -1)、秸秆产量(1.46 t hm -1)、生物产量(2.99 t hm -1)和收获指数(51.17%)最高。磷钾互作效应在P @ 25 kg ha-1和K @ 40 kg ha-1处理下,最高荚果数(5.18)、荚果长(13.40 cm)、荚果数(4.30)、千粒重(430.53 g)、种子产量(1.40 t ha-1)、秸秆产量(1.60 t ha-1)、生物产量(3.00 t ha-1)和收获指数46.66%。结果表明,施用磷25 kg hm -1和钾40 kg hm -1是提高法国豆产量的最适宜组合。
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引用次数: 2
Toxicity of Bacillus thuringiensis against second instar larvae of Spodoptera litura on different host plants 苏云金芽孢杆菌对不同寄主植物斜纹夜蛾二龄幼虫的毒力研究
Pub Date : 2020-10-06 DOI: 10.25081/jsa.2020.v4.6464
Zulnorain Sajid, Abid Ali, M. Usman, A. Mujahid, Bilal Jafar, Adnan Kashif, H. Bashir, Q. Abbas, M. Tariq, M. Shakeel, Y. Sultan, Muhammad Haseeb Qureshi, N. Akhtar
Spodoptera litura is serious pest of many horticultural and agricultural crops. S. litura can cause severe economic loss of crops like cotton, cabbage and okra. Different methods are adopted to control this notorious insect pest throughout the globe but biological control is one of them that proved best against it. In 2019, current study was conducted to check the toxicity of Bacillus thuringiensis on 2nd larval instars under laboratory conditions by using different hosts. Mortality data was recorded at 24, 48 and 72 hours of post treatment. The results showed that maximum mortality was recorded on okra (41.46%) followed by cotton (34.67%) and cabbage (23.87%) after 24 hours. After 72 hours of post treatment, maximum mortality of larvae was observed on Bt treated leaves of cabbage than okra. The results indicated that 100% mortality was recorded on cabbage after 72 hours of treatment. Bt treated cabbage leaves were found most effective with 11.21% mortality while cotton gave least effective results with 9.99%. The current study concluded that microbial control is best approach to control insect pest under laboratory as well as field conditions.  
斜纹夜蛾是危害许多园艺和农业作物的严重害虫。斜纹夜蛾会给棉花、卷心菜和秋葵等作物造成严重的经济损失。在全球范围内,人们采用了不同的方法来控制这种臭名昭著的害虫,但生物控制是其中一种被证明是最好的。2019年,本研究通过不同宿主,在实验室条件下检测苏云金芽孢杆菌对2龄幼虫的毒性。在治疗后24、48和72小时记录死亡率数据。结果表明,24 h后秋葵死亡率最高(41.46%),其次是棉花(34.67%)和大白菜(23.87%);处理72 h后,处理过Bt的白菜叶片上的幼虫死亡率高于秋葵。结果表明,处理72小时后,白菜的死亡率为100%。Bt处理后的白菜叶死亡率最高,为11.21%,棉花叶死亡率最低,为9.99%。目前的研究表明,无论是在实验室还是在田间,微生物防治都是防治害虫的最佳方法。
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引用次数: 3
Devastating impacts of flood disaster among rural households in Benue State, Nigeria 洪水灾害对尼日利亚贝努埃州农村家庭的破坏性影响
Pub Date : 2020-06-16 DOI: 10.25081/jsa.2020.v4.6239
R. Jiriko, E. N. Mbah, N. Amah
The study was carried out to determine devastating impacts of flood disaster among rural households in Benue State, Nigeria. Questionnaire was used to collect data from a sample of 145 respondents used for the study. Data collected for the study were analyzed using mean score. Findings indicated that the major causes of flood disaster were poor level of public awareness campaign on flood hazard (x –=2.00), increased impermeability due to urbanization (x –=2.00), overflowing dams (x –=2.00), building on water ways and drainage channels (x –=2.00), flood plain being occupied by human settlement and economic activities (x –=1.41), blockage of flood path with sediment deposit (x –=1.31) and increase in rainfall (x –=1.30). Rendering of rural dwellers homeless (x –=2.47), fills homes with dirty water and refuse (x –=2.43), blockage of road networks (x –=2.42), disruption of economic activities (x –=2.40), destruction of farmlands (x –=2.40), increase in household food insecurity (x –=2.35), destruction of crops and livestock (x –=2.30), damages stored farm produce (x –=2.24) and loss of lives and property (x –=2.12) were effects of flood disaster on rural households. Based on the findings of the study, there arises the need for government at all levels and non-governmental organizations to intensify efforts in creation of awareness for people living in flood prone areas to relocate to a safer place in order to avoid loss of life and disruption of economic activities.
开展这项研究是为了确定洪水灾害对尼日利亚贝努埃州农村家庭的破坏性影响。本研究采用问卷调查的方式从145名受访者中收集数据。本研究收集的数据采用平均分法进行分析。结果表明,洪涝灾害的主要原因是公众对洪涝灾害的认识水平不高(x - =2.00)、城市化导致的不透水性增加(x - =2.00)、溢流水坝(x - =2.00)、水道和排水渠上的建筑(x - =2.00)、人类住区和经济活动占用河漫滩(x - =1.41)、泥沙淤积堵塞洪涝通道(x - =1.31)和降雨量增加(x - =1.30)。使农村居民无家可归(x - =2.47),使房屋充满脏水和垃圾(x - =2.43),堵塞道路网络(x - =2.42),破坏经济活动(x - =2.40),破坏农田(x - =2.40),增加家庭粮食不安全(x - =2.35),破坏作物和牲畜(x - =2.30),破坏储存的农产品(x - =2.24)以及损失生命和财产(x - =2.12)是洪水灾害对农村家庭的影响。根据这项研究的结果,各级政府和非政府组织有必要加紧努力,提高生活在易受洪水影响地区的人们的认识,使他们搬迁到更安全的地方,以避免生命损失和经济活动中断。
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引用次数: 0
Effect of different artificial diets on biological parameters of female Chrysoperla carnea under laboratory conditions 实验室条件下不同人工饲料对雌金蝶生物学参数的影响
Pub Date : 2020-05-31 DOI: 10.25081/jsa.2020.v4.5719
G. Murtaza, M. Ramzan, Y. Sultan, F. Saleem, Muhammad Arsalan Rafique, S. Sajid, M. Jamil
Chrysoperla carnea (Neuroptera: Chrysopidae) is considered as a cosmopolitan polyphagous generalist predator. Chrysoperla carnea can be used in biological control programs. The biological parameters of Chrysoperla carnea were studied to check the effect different diets under laboratory conditions. The results indicate that preoviposition, oviposition and post oviposition periods were 8.2±1.25, 30.6±1.72 and 9.4±1.02 days, respectively. The highest mortalities were occurred reared at Water+ Sugar+ Yeast+ Evion diets while no mortality was observed at H2O + Sugar +Yeast + Honey.  The female longevity was 51.2 ± 2.18 days. The fecundity of female was 301.31 eggs per female with 10.36 eggs per day per single female on artificial diet, H2O + Sugar +Yeast + Honey. The study revealed that H2O + Sugar +Yeast + Honey was showed highest survival and fecundity while Water+ Sugar+ Yeast+ Evion least one.
大黄茧蜂(Chrysoperla carnea,神经翅目:大黄茧蜂科)被认为是一种世界性的多食性通才捕食者。金蝶可用于生物防治计划。在实验室条件下,研究了不同饲粮对金菊生物学参数的影响。结果表明:产卵前、产卵期和产卵后分别为8.2±1.25、30.6±1.72和9.4±1.02 d。水+糖+酵母+ evon组死亡率最高,而水+糖+酵母+蜂蜜组无死亡率。雌性寿命为51.2±2.18天。在人工饲料H2O +糖+酵母+蜂蜜的条件下,雌蜂的产卵量为每只301.31个蛋,每只雌蜂的产卵量为10.36个蛋/ d。研究表明,水+糖+酵母+蜂蜜的成活率和繁殖力最高,水+糖+酵母+蜂蜜的成活率和繁殖力最低。
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引用次数: 2
Growth responses of oil palm seedling inoculated with Ganoderma boninense under competition with edible herbaceous plants 接种牛蒡灵芝后油棕幼苗在食用草本植物竞争下的生长响应
Pub Date : 2020-05-30 DOI: 10.25081/jsa.2020.v4.6231
T. P. Rahmadhani, S. Suwandi, S. Suparman
Basal stem rot (BSR) caused by long-term survival fungus Ganoderma boninense is the most important of oil palm disease that difficult to be controlled. Perennial herbaceous species are potentially developed for long-term BSR control and applied as mixed planting with oil palm. This research was aimed to study the competition effects of mixed planting with edible herbaceous perennial plants (edible canna (Canna indica), arrowroot (Maranta arundinacea), cocoyam (Xanthosoma sagittifolium), and water yam (Dioscorea alata) on growth of oil palm seedlings. Two competition trials (non-inoculated and Ganoderma-inoculated trial) were conducted. The herbaceous plants were grown together with oil palm seedling in a polybag filled with 40 L field soil. Mixed planting of Ganoderma-inoculated oil palm and herbaceous plants and grown on a large soil volume resulted in a minor infection with a high variation in severity leading to insignificant effect of herbaceous competition on Ganoderma infection. Herbaceous competition significantly suppressed oil palm seedling growth under both inoculated with Ganoderma and without inoculation. Arrowroot exhibited as the most competitive herbaceous species and followed by canna and cocoyam. Water yam showed a weak competitive against oil palm seedling since only a minor interference in all observed growth characteristics.
由长期存活的灵芝真菌引起的基茎腐病是油棕病害中最主要的、最难控制的病害。多年生草本植物具有长期防治BSR的潜力,可与油棕混栽。本研究旨在研究食用草本多年生植物(美人蕉(canna indica)、竹芋(Maranta arundinacea)、椰子树(Xanthosoma sagittifolium)和水山药(Dioscorea alata)混合种植对油棕幼苗生长的竞争效应。对照试验分为未接种试验和接种灵芝试验。这些草本植物与油棕幼苗一起生长在一个装满40 L田间土壤的塑料袋中。接种了灵芝的油棕与草本植物混合种植,土壤体积较大,侵染程度较小,但严重程度变化较大,草本竞争对灵芝侵染的影响不显著。接种和未接种灵芝时,草本竞争均显著抑制油棕幼苗生长。竹芋是最具竞争力的草本植物,美人蕉和椰树次之。由于对所有观察到的生长特征只有轻微的干扰,因此对油棕幼苗的竞争能力较弱。
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引用次数: 3
Host status and disease threshold of Rhizoctonia solani (Kühn (teleomorph: Thanatephorus cucumeris (Frank) Donk), on Chia (Salvia hispanica L.) and its suitability as a rotational crop to (Nicotana tabucum L.) 茄根丝核菌在中国(鼠尾草)上的寄主状态、病害阈值及其对烟草的适宜性
Pub Date : 2020-05-06 DOI: 10.25081/jsa.2020.v4.6061
Anyway Chofamba
The study was done following the continued outbreaks of problematic diseases in the production of tobacco (N. tabucum) in Zimbabwe which amongst the problematic ones are Rhizoctonia solani and  Fusarium solani. The experiment was conducted at Marondera University of Agriculture Science and Technology in Zimbabwe, aiming to evaluate the suitability of Chia as a rotational crop to tobacco. Chia is a seed oil producing legume crop which is regarded the most suitable in rotation with tobacco at the moment because of its monetary benefit to the farmer hence will encourage crop rotation. An experiment was set up with two trials in three growing seasons arranged in a complete block design. Fusarium solani five treatments were used one control and four other different rates of inoculum 2.5g,3.5g, 5.5g and 7.5g/10ml of Distilled water and Rhizoctonia solani five treatments were used with a control and four other different inoculations rates inoculated at 0.1g, 0.2g, 0.4g and 0.6g/10ml Distilled water. Data collection was based on the disease severity scale and index of Chia, and also histochemical parameters which were hydrogen peroxide content and malonaldehyde content. There was significant (p < 0.05) differences between the different inoculation rates of all the measured parameters under the distinct diseases. Hence Chia cannot be rotated with tobacco even under low levels of disease threshold within the soil, unless proper and intensive management practices are put in place.
这项研究是在津巴布韦烟草生产中不断爆发问题疾病之后进行的,其中问题疾病包括枯丝核菌和枯镰刀菌。这项试验是在津巴布韦的Marondera农业科技大学进行的,旨在评估中国作为轮作烟草作物的适宜性。中国是一种产籽油的豆科作物,目前被认为是最适合与烟草轮作的作物,因为它对农民有经济效益,因此将鼓励轮作。本试验采用全块设计,3个生长期设2个试验。茄枯菌5个处理分别为对照和其他4种不同接种量,分别为2.5g、3.5g、5.5g和7.5g/10ml蒸馏水;茄枯菌5个处理分别为对照和其他4种不同接种量,分别为0.1g、0.2g、0.4g和0.6g/10ml蒸馏水。数据收集基于Chia疾病严重程度量表和指数,以及过氧化氢含量和丙二醛含量等组织化学参数。在不同病害条件下,不同接种率下各指标间差异均显著(p < 0.05)。因此,除非采取适当和集约化的管理措施,否则即使在土壤中病害阈值较低的情况下,中国也不能与烟草轮作。
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引用次数: 0
Comparative performance of three local wheat (Triticum aestivum L.) varieties Digla, Farris and Babil in Iraq 伊拉克三种本地小麦(Triticum aestivum L.)品种Digla、Farris和Babil的比较性能
Pub Date : 2018-12-08 DOI: 10.25081/jsa.2018.v2.20181204
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引用次数: 0
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Journal of Scientific Agriculture
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