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| 不同类型菜田和农田土壤磷素状况研究 | |
| 引用本文： | 张学军,孙权,陈晓群,程淑华,张艳,王黎明.不同类型菜田和农田土壤磷素状况研究[J].土壤,2005,37(6):649-654. |
| 作者姓名： | 张学军 孙权 陈晓群 程淑华 张艳 王黎明 |
| 作者单位： | 1. 宁夏农林科学院农业资源与环境研究所,银川,750002 2. 宁夏大学农学院,银川,750021 3. 宁夏农林科学院分析测试中心,银川,750002 |
| 摘 要： | 以西北地区有代表性的灌淤土为供试土壤,研究不同类型菜田(露地菜田和蔬菜保护地)及农田土壤的P素状况,以及蔬菜保护地土壤P素的空间分布特性。结果表明,露地菜田、蔬菜保护地土壤全P、无机P、有机P、Olsen-P的平均含量是一般农田土壤的1.43~8.30倍,土壤Olsen-P占全P的比率显著高于一般农田。蔬菜保护地土壤各形态P素主要积累在0~30cm土层,并随土层深度的增加各形态P素的含量逐渐降低,各土层Olsen-P、Ca2-P、Ca8-P、Al-P含量降低幅度明显高于Fe-P、O-P、Ca10-P。 |
| 关 键 词： | 菜田 农田 土壤磷素 空间分布特性 |
FRACTIONS OF PHOSPHORUS IN VEGETABLE SOILS AND FARMLAND SOILS |
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| ZHANG Xue-jun,SUN Quan,CHEN Xiao-qun,CHENG Shu-hu,ZHANG Yan and WANG Li-ming.FRACTIONS OF PHOSPHORUS IN VEGETABLE SOILS AND FARMLAND SOILS[J].Soils,2005,37(6):649-654. | |
| Authors: | ZHANG Xue-jun SUN Quan CHEN Xiao-qun CHENG Shu-hu ZHANG Yan and WANG Li-ming |
| Institution: | 1. Agricultural Resources and Environment Institute of Ningxia Academy of Agriculture and Forestry, ]qnchuan 750002; 2. Agricultural Department of Ningxia University, Yinchuan 750021; 3. Analysis and Test Center of Ningxia Academy of Agriculture and Forestry, Yinchuan 750002 |
| Abstract: | Fractions of phosphorus in vegetable soils and farmland soils in Northwest China were explored. The results showed that the contents of total P and organic P in vegetable soils was 1.83 ~ 8.3 times as much as in farmland soils. The percentage of Olsen-P to total P and the percentage of Ca2-P, Ca8-P, Al-P and Fe-P to inorganic P were higher in vegetable soils than in farmland soil. In protected vegetable soils, P of various fractions accumulated mainly in the 0 ~ 30 cm soil layer and decreased with depth in soil profile. The decrease was more significant with the content of Olsen-P, Ca2-P, Ca8-P and Al-P than with Fe-P, O-P and Ca10-P. |
| Keywords: | Vegetable soil Farmland Fraction of phosphorus Spatial distribution of P |
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