Effect of Sulfur Fertilization on Productivity and Grain Zinc Yield of Rice Grown under Low and Adequate Soil Zinc Applications

IF 5.6 2区 农林科学 Q1 AGRONOMY Rice Science Pub Date : 2023-11-01 DOI:10.1016/j.rsci.2023.07.003
Kankunlanach Khampuang , Nanthana Chaiwong , Atilla Yazici , Baris Demirer , Ismail Cakmak , Chanakan Prom-U-Thai
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Abstract

This study aimed to investigate the responses in rice (Oryza sativa cv. Osmancik 97) production and grain zinc (Zn) accumulation to combined Zn and sulfur (S) fertilization. The experiment was designed as a factorial experiment with two Zn and three S concentrations applied to the soil in a completely randomized design with four replications. The plants were grown under greenhouse conditions at low (0.25 mg/kg) and adequate (5 mg/kg) Zn rates combined with S (CaSO4·2H2O) application (low, 2.5 mg/kg; moderate, 10 mg/kg, and adequate, 50 mg/kg). The lowest rate of S at adequate soil Zn treatment increased grain yield by 68% compared with the same S rate at low Zn supply. Plants with the adequate S rate at low Zn and adequate Zn supply produced the highest grain yield, with increases of 247% and 143% compared with low S rate at low Zn and adequate Zn supply, respectively. The concentration of grain Zn and S responded differently to the applied S rates depending on the soil Zn condition. The highest grain Zn concentration, reaching 41.5 mg/kg, was observed when adequate Zn was supplied at the low S rate. Conversely, the adequate S rate at the low soil Zn conditions yielded the highest grain S concentration. The total grain Zn uptake per plant showed particular increases in grain Zn yield when adequate S rates were applied, showing increases of 208% and 111% compared with low S rate under low and adequate soil Zn conditions, respectively. The results indicated that the synergistic application of soil Zn and S improves grain production and grain Zn yield. These results highlight the importance of total grain Zn yield in addition to grain Zn concentration, especially under the growth conditions where grain yield shows particular increases as grain Zn is diluted due to increased grain yield by increasing S fertilization.

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硫肥对低适锌条件下水稻生产力和籽粒锌产量的影响
本研究的目的是研究水稻(Oryza sativa cv.;锌硫配施对水稻产量和籽粒锌积累的影响。本试验采用全随机设计,4个重复,2个Zn和3个S浓度的土壤因子试验。盆栽在温室条件下以低(0.25 mg/kg)和充足(5 mg/kg) Zn配S (CaSO4·2H2O)(低,2.5 mg/kg;适量,10mg /kg,适量,50mg /kg)。土壤锌充足条件下施最低S量比低锌条件下施最低S量增产68%。低锌和补锌条件下施硫量充足的植株籽粒产量最高,分别比低锌和补锌条件下施硫量充足的植株增产247%和143%。不同土壤Zn条件下,籽粒Zn和S浓度对施S量的响应不同。低S速率下补锌充足时,籽粒锌浓度最高,达到41.5 mg/kg。相反,在低锌土壤条件下,适当的S速率产生最高的籽粒S浓度。施硫量充足时,单株籽粒总锌吸收量显著增加,在土壤锌含量低和充足的条件下,籽粒锌产量分别比低施硫量增加208%和111%。结果表明,土壤锌和硫的协同施用提高了粮食产量和粮食锌产量。这些结果强调了除籽粒锌浓度外,籽粒总锌产量的重要性,特别是在增加施硫量增加籽粒锌被稀释后籽粒产量增加的生长条件下。
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来源期刊
Rice Science
Rice Science Agricultural and Biological Sciences-Agronomy and Crop Science
CiteScore
8.90
自引率
6.20%
发文量
55
审稿时长
40 weeks
期刊介绍: Rice Science is an international research journal sponsored by China National Rice Research Institute. It publishes original research papers, review articles, as well as short communications on all aspects of rice sciences in English language. Some of the topics that may be included in each issue are: breeding and genetics, biotechnology, germplasm resources, crop management, pest management, physiology, soil and fertilizer management, ecology, cereal chemistry and post-harvest processing.
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