| 高产水稻氮钾施用量最佳配比研究 |
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| 引用本文： | 卢普相.高产水稻氮钾施用量最佳配比研究[J].生态环境,1999(3). |
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| 作者姓名： | 卢普相 |
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| 作者单位： | 广东省生态环境与土壤研究所!广州，510650，广东省生态环境与土壤研究所!广州，510650，广东省生态环境与土壤研究所!广州，510650，广东省生态环境与土壤研究所!广州，510650，广东省生态环境与土壤研究所!广州，510650 |
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| 基金项目： | 广东省“八五”科技攻关项目!1991-120-07 |
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| 摘 要： | 求导了水稻目标产量的预测方程，不同氮钾施用水平的等产方程，以及氮钾最佳配比方程。根据上述方程推导出地力产量为6345kg／hm2的水稻田目标产量为8589kg／hm2，N与K2O施用量的最佳配比为11．22，即N139．4kg／hm2、K2O170．6kg／hm2。
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| 关 键 词： | 水稻 氮 钾 施肥量 最佳配比 |
Study on Optimum Proportion of Nitrogen to Potassium for High-yield Rice |
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| LU Pu-xiang, LUO Lian-xiang, LUO Bo-sheng, ZHANG Mei-xing, YUAN Cai-ting.Study on Optimum Proportion of Nitrogen to Potassium for High-yield Rice[J].Ecology and Environmnet,1999(3). |
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| Authors: | LU Pu-xiang LUO Lian-xiang LUO Bo-sheng ZHANG Mei-xing YUAN Cai-ting |
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| Abstract: | In this paper, we work out a forecast equation for aim-yield of rice, an equal-product-curve equation under different application rates of N and K2O, and the optimum proportion equation for N and K2O. Accordingto these equations, we calculate the optimum application proportion of N to K2O for the field, which capability yield is 6 345 kg/hm2, under the aim yield 8 589 kg/hm2. The proportion is 1: 1.22, namely, N 139.4 kg/hm2 and K2O 170.6 kg/hm2. It quite accords with practice. |
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| Keywords: | rice nitrogen potassium application rates optimum proportion |
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