| 豫东潮土区棉花氮磷钾肥最佳施用量和适宜配比的研究 |
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| 引用本文： | 杨建堂 徐本生. 豫东潮土区棉花氮磷钾肥最佳施用量和适宜配比的研究[J]. 河南农业大学学报, 1990, 24(2): 171-178 |
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| 作者姓名： | 杨建堂 徐本生 |
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| 作者单位： | 河南农业大学农学系，河南农业大学农学系，河南农业大学农学系，河南农业大学农学系，河南农业大学农学系 |
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| 摘 要： |
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| 关 键 词： | 棉花 潮土 氮 磷 钾 |
Optimum Amount of Application and Suitable Ratio for Nitrogen, Phosphorous and Potassium on Cotton in East China Moist Soil Area |
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| Yang Jiantang,Xu Bensheng et al. Optimum Amount of Application and Suitable Ratio for Nitrogen, Phosphorous and Potassium on Cotton in East China Moist Soil Area[J]. Journal of Henan Agricultural University, 1990, 24(2): 171-178 |
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| Authors: | Yang Jiantang Xu Bensheng et al |
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| Affiliation: | Department of Agronomy |
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| Abstract: | The regress equation gained after the experiment is y = 5.31 + 4.7146N + 4.6202P-0.2098N~2-0.2944P~2. According to the equation, fertilizer application should be in line with. l)When the soil condition is similar to the experiment potassium is temporarily unnecessary at the present productive level. 2) To get the highest yield, 11.2 kg of N and 7.9 kg of P_2O_5 per mu should be applied (the ratio of N: P_2O_5 is 1: 0.70). 3) The economic optimum dosage is 9.8 kg of N and 6.7 kg of P_2O_6 per mu, ratio of which is 1 s 0.68. 4) The linear equation of the fertilizer ratio is 0.71P-0.59N +1.06 = 0. |
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| Keywords: | cotton moist soil nitrogen phosphorous potassium dosage of fertilizer rotation design |
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