| 土壤剖面中Olsen-P的分布特征与深层施磷的效应 |
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| 引用本文： | 李昆,曹一平,苏德纯.土壤剖面中Olsen-P的分布特征与深层施磷的效应[J].中国农业大学学报,1995(Z2):84-88. |
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| 作者姓名： | 李昆 曹一平 苏德纯 |
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| 作者单位： | 北京农业大学植物营养系;北京农业大学植物营养系 北京; |
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| 摘 要： | 本文通过田间试验与室内分析发现,在黄淮海地区部分农田土壤中有效磷的分布存在着严重的不平衡现象,Olsen-P 主要集中在耕层0～20 cm 以内,耕层以下20～50 cm 范围内 Olsen-P 的含量极低,甚至在检测限以下。因此布置了田间微区试验,研究底层土壤缺磷条件下施用磷肥对冬小麦不同生育期(拔节、孕穗、成熟)的干物重及吸磷量的影响。田间微区试验结果表明:深层施磷对冬小麦磷素营养和产量的形成都有良好的促进作用。
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| 关 键 词： | 土壤剖面 磷 分布 冬小麦 深层施磷 |
Available P Distribution in Soil Profile and Plant Response to Deep Layer P Application |
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| Li kun Cao Yiping Su Dechun.Available P Distribution in Soil Profile and Plant Response to Deep Layer P Application[J].Journal of China Agricultural University,1995(Z2):84-88. |
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| Authors: | Li kun Cao Yiping Su Dechun |
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| Institution: | Li kun Cao Yiping Su Dechun (Dept.of Plant nutrition,B A U,Beijing 100094) |
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| Abstract: | The analysis of soil samples taken from Huang-Huai-Hai plain indicated that available-P unevenly distributed in soil profile Most of available-p concentrated in the top soil layers(0-20cm)and very little Olsen-P was detected in subsoil(20-50cm)In a feild experiment with microplots was carried out and effect of fertilizer-P on plant growth was investigated.In was found that winter wheat responded well to deep application of fertilizer-P. |
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| Keywords: | soil profile P distribution winter wheat deep-p apply |
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