| 磷肥在(土娄)土中的形态转化及其对土壤有效磷的影响 |
| 投稿时间：1994-02-28 点此下载全文 |
| 引用本文：华天懋,李昌纬,赵伯善,李辉桃.磷肥在(土娄)土中的形态转化及其对土壤有效磷的影响[J].西北农业学报,1994,3(4):64~69 |
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| 摘要点击次数: 39 |
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| 中文摘要:10年定位试验研究结果表明,在长期施磷的条件下,陕西土耕层的磷素形态分布与该土壤性质一致.有机磷、无机磷在全磷中所占比例相对稳定,Ca-P仍是无机磷的主要形态.3组Ca-P的含量顺序是Ca-PⅢ>Ca-PⅡ>Ca-PⅠ.Al-P含量增长较多,Fe-P含量相对稳定.10年中施入土壤的磷素有41.6%在耕层中转化为各种形态的矿质磷,其中Al-P、Ca-PⅠ及Ca-PⅡ的含量都与土壤有效磷含量呈极显着的相关关系.同时,有机磷含量与土壤有效磷也有显着的相关关系.化学磷肥是提供作物磷素营养、维持上壤磷素平衡的主要磷源. |
| 中文关键词:土 磷素形态 土壤有效磷 |
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| MORPHOLOGICAL TRANSFORMATION OF PHOSPHORUS FERTIL1ZER IN LOUTU SOIL AND EFFECT OF IT ON SOIL EFFECTIVE PHOSPHOTE |
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| Abstract:The tests showed that there was uniformity between morphological distribution of phosphorus in loutu soil and this soil property under conditions of application phosphorus fertilizer in ten years.The proportion between organic and inorganic phosphorus in all phosphorus was stable.Ca-P was main distribution of inorganie phosphorus.The contents among those Ca-P were Ca-PⅢ>Ca-PⅡ>Ca-PⅠ.Al-P content has increased quite greatly.Fe-P content was stable.41.5 percent of application phosphorus in ten years has been transferred into variant morphological inorganic phosphorus.The contents of Al-P, Ca-PⅠ and Ca-PⅡ were siginficantly related to content of effective phosphorus in soil.The content of organic phosphorus were significantly related to content of effective phosphorus of soil too.Chemical phosphate fertillizer was main source for plant phosphorus nutrition and balance of soil phosphorus. |
| keywords:Loutu soil Phosphorus morphology Soil effective phosphate |
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