| 磷钾肥施用量和方法对弱筋小麦籽粒产量和蛋白质含量及养分吸收利用的影响 |
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| 引用本文： | 钱晨诚,陈立,马泉,李春燕,朱敏,朱新开,丁锦峰,郭文善.磷钾肥施用量和方法对弱筋小麦籽粒产量和蛋白质含量及养分吸收利用的影响[J].植物营养与肥料学报,2023,29(2):287-299. |
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| 作者姓名： | 钱晨诚 陈立 马泉 李春燕 朱敏 朱新开 丁锦峰 郭文善 |
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| 作者单位： | 1.扬州大学江苏省作物遗传生理重点实验室 / 扬州大学小麦研究中心，江苏扬州 225009 |
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| 基金项目： | 国家自然科学基金(32172111)；江苏省现代农业(小麦)产业技术体系；江苏高校优势学科建设工程项目；江苏省科技副总经理项目 (FZ20211472)；宿迁千人领军人才聚集计划；扬州大学研究生科研创新计划项目 (KYCX21_3244)。 |
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| 摘 要： | 【目的】研究不同磷、钾肥施用量和施用方法对稻茬小麦籽粒产量、蛋白质含量和氮、磷、钾素吸收与利用的影响，为稻茬小麦增产增效提供参考。【方法】2020—2021年在江苏仪征市进行小麦田间试验，种植制度为稻麦轮作，供试小麦品种为弱筋型‘宁麦33’，该地块稻麦秸秆长期全部还田。试验采用裂区设计，主区为磷肥，分别设置3个一次基施磷(P) 0、72和144 kg/hm2处理(分别为P0、P1、P2)和1个基施与拔节期追施磷(P)各72 kg/hm2处理(P3)；钾为副区，设置3个一次基施钾(K) 0、72和144 kg/hm2处理(K0、K1、K2)和1个基施与拔节期施钾(K)各72 kg/hm2处理(K3)。小麦收获后，调查生物量与籽粒产量，分析植株和籽粒中氮磷钾含量和籽粒蛋白质含量。【结果】施磷、钾肥对植株氮、磷、钾养分积累量、养分利用效率、籽粒产量和蛋白质含量有显著效应和交互效应，适量的磷、钾肥(72 kg/hm2)配施有助于量质效协同提升，而过量施用(144kg/hm2<...
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| 关 键 词： | 稻茬小麦 磷肥 钾肥 籽粒产量 肥料利用效率 |
| 收稿时间： | 2022-06-09 |
Effects of phosphorus and potassium fertilizer on grain yield,nutrient uptake and utilization in low-gluten wheat |
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| QIAN Chen-cheng,CHEN Li,MA Quan,LI Chun-yan,ZHU Min,ZHU Xin-kai,DING Jin-feng,GUO Wen-shan.Effects of phosphorus and potassium fertilizer on grain yield,nutrient uptake and utilization in low-gluten wheat[J].Plant Nutrition and Fertilizer Science,2023,29(2):287-299. |
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| Authors: | QIAN Chen-cheng CHEN Li MA Quan LI Chun-yan ZHU Min ZHU Xin-kai DING Jin-feng GUO Wen-shan |
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| Institution: | 1.Key Laboratory of Crop Genetics and Physiology of Jiangsu Province / Wheat Research Center, Yangzhou University, Yangzhou, Jiangsu 225009, China |
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| Abstract: | 【Objectives】 The experiment studied the effects of different phosphorus and potassium fertilizer application rates and methods on grain yield, protein content, NPK uptake, and utilization of wheat following rice, to provide a reference for optimizing yield and efficiency of rice-wheat rotation system. 【Methods】 Field experiments with split plot design were carried out in Yizheng City, Jiangsu Province under rice and wheat rotation system from 2020 to 2021, and the teat wheat variety was low-gluten type, Ningmai 33, and all rice and wheat straw were returned to the field after harvest. The main factor was P fertilizer, including three primary base application 0, 72, and 144 kg/hm2 (P0, P1, P2) treatment, and a basal plus topdressing at jointing stage at the rate of respective 72 kg/hm2 (P3). K fertilizer was the secondary factor, with three primary base application treatments of 0, 72, and 144 kg/hm2 (K0, K1, K2), and one treatment of base plus topdressing at jointing stage at the rate of 72 kg/hm2 each time (K3). Wheat biomass and grain yield were investigated, NPK and protein contents in plants and grains were analyzed at harvest. 【Results】 P and K fertilization had significant main effects and interaction on plant NPK accumulation, fertilizer use efficiency, grain yield and protein content. Appropriate P and K fertilization rate (72 kg/hm2) improved their synergy effect, while excessive rate (144 kg/hm2) offset or even led to negative impact, such as reducing fertilize efficiency and grain quality. Compared with P1, P2 did not significantly affect grain yield, protein content, N and K agronomic efficiency, but reduced P agronomic efficiency and the partial productivity of P fertilizer. Under the P0 condition, K2 had higher grain yield, PK accumulation than K1. Compared with P2, P3 did not affect grain yield, protein content and fertilizer use efficiency, and K3 did not affect grain yield and protein content compared with K2, but significantly increased the physiological use efficiency and agronomic efficiency of nitrogen and phosphorus. Among the combination treatments, P3K2, P1K2 and P1K3 performed better in terms of grain yield and fertilizer utilization than those containing P0, P2, and K1 rates. 【Conclusions】 Applying P fertilizer twice did not show superiority over single basal application, while two-time application of K fertilizer had a significantly higher effect than one basal application. In general, the combination of P 72 kg/hm2 and K 144 kg /hm2, regardless of frequency of application is recommended for low-gluten wheat variety, Ningmai 33 in less fertile sandy loam soil. |
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