| 江汉平原区水稻-油菜轮作制中氮钾肥效应及氮钾养分平衡研究 |
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| 引用本文： | 肖荣英,王富华,张冲.江汉平原区水稻-油菜轮作制中氮钾肥效应及氮钾养分平衡研究[J].广东农业科学,2011,38(19). |
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| 作者姓名： | 肖荣英 王富华 张冲 |
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| 作者单位： | 1. 信阳农业高等专科学校农业科学系,河南信阳464000;农业部蔬菜水果质量监督检验测试中心,广东广州510640
2. 农业部蔬菜水果质量监督检验测试中心,广东广州,510640 |
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| 基金项目： | 国家自然科学基金(40571090); 国际钾肥研究所(IPI,瑞士)合作项目 |
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| 摘 要： | 利用大田试验研究了江汉平原生态区水稻-油菜轮作制中钾肥的施用对水稻和油菜的产量及农田钾素平衡的影响。结果表明,施钾量为187.5 kg/hm2时,水稻和油菜产量均达到最高,与不施钾相比,水稻增产3 007 kg/hm2,增产率为45.4%;油菜增产757 kg/hm2,增产率为40.4%。增施氮、钾肥增加作物养分吸收量,钾肥用量187.5 kg/hm2时,钾吸收量为553.3 kg/hm2,氮吸收量为279.9 kg/hm2。水稻-油菜轮作中所有处理钾素养分平衡均出现亏缺,但增施钾肥缓解了土壤钾素亏缺程度;所有处理氮素均出现不同程度的盈余。
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| 关 键 词： | 水稻-油菜轮作 钾肥 氮肥 养分吸收 钾素平衡 氮素平衡 |
Study on the effect of N and K fertilizer and the blance of nitrogen and potash at rice-rapeseed rotation system in Jianghan plain |
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| XIAO Rong-ying,WANG Fu-hua,ZHANG Chong.Study on the effect of N and K fertilizer and the blance of nitrogen and potash at rice-rapeseed rotation system in Jianghan plain[J].Guangdong Agricultural Sciences,2011,38(19). |
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| Authors: | XIAO Rong-ying WANG Fu-hua ZHANG Chong |
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| Institution: | XIAO Rong-ying1,2,WANG Fu-hua2,ZHANG Chong2(1.Department of Agricultural Sciences,Xinyang Agricultural College,Xinyang 464000,China,2.Supervision and Testing Center for Vegetable and Fruit Quality,Ministry of Agriculture,Guangzhou 510640,China) |
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| Abstract: | Effect of K application on the yield and potash balance of rice-rapeseed rotation system in Jianghan plain were studied.The results showed that rice and rapeseed yield reached the highest with 187.5 kg K2O/hm2 and increased rice yield 3 007 kg/hm2,the rate of growth was 45.4%,increased rapeseed yield 757 kg/hm2,the rate of growth was 40.4%.N and K increased nutrient accumulative cotent of crops.Crops absorbed K 553.3 kg/hm2,N 279.9 kg/hm2 with 187.5 kg K2O/hm2.In rice-rapeseed rotation system,potassium show... |
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| Keywords: | rice-rapeseed rotation system potassium nitrogen nutrient uptake balance of potassium balance of nitrogen |
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