摘要
本文对江汉平原四湖地区几个不同潜育度水稻土剖面的磷素状况及其有效性进行了研究 ,并用张守敬—Jakson无机磷分级法做无机磷分级。结果表明 ,土壤潜育化程度对土壤全磷没有明显的影响 ,对土壤磷素形态及其有效性有明显的影响。随着土壤潜育化程度加重 ,无机磷中的O—P含量有增加趋势 ,其占土壤无机磷的百分数增大 ;土壤有机磷也随之增加 ;但有效磷含量减少。
The effects of soil gleyization on fractions and supply of phosphorus in several paddy soil profiles in Sihu Region, Jianghan Plain, are studied with fractionation of soil inorganic phosphorus (Zhang Shoujing-Jakson method). The result shows that there is significant effect of soil gleyization on fractions and availability of phosphorus except for total phosphorus content. As soil gleyization is more developed, the proportions of O-P in inorganic phosphorus and organic in total increase, but the content of available phosphorus decrease. And this effect is related to organic matter and oxidation and reduction condition in the soils.
出处
《土壤通报》
CAS
CSCD
北大核心
2002年第4期275-277,共3页
Chinese Journal of Soil Science
基金
中科院"九五"重点项目 (kn95 - 0 3 - 0 3)
三峡工程生态环境监测项目 (SX 97 1 3 1 )资助
