酸性硫酸盐土水改旱后土壤化学性状的变异初报  

Changes of soil chemical properties after transferring acid sulfate paddy soil to upland soil.

作　　者：李华兴[1] 张新明[1] 卢维盛[1] 刘远金[1] 李长洪[1] 

机构地区：[1]华南农业大学资源环境学院

出　　处：《应用生态学报》1999年第3期317-320,共4页Chinese Journal of Applied Ecology

基　　金：广东省"九五"科技攻关项目;国家"九五"科技攻关资助项目

摘　　要：探讨了酸性硫酸盐水稻土改为旱作后土壤化学性状的变异以及比较不同利用方式之间的经济效益．结果表明，酸性硫酸盐水稻土改种甜玉米和蔬菜后，土壤化学性状发生显著变化．耕层土壤酸度、水溶性硫酸根含量、土壤活性铝和活性铁含量均显著降低．经济效益得到显著提高．建议对水改旱后的环境效应进行深入研究以及进行定位观测。This paper dealt with the changes of the soil chemical properties after transferring acid sulfate paddy soil to upland soil, and compared the economic profits among different land use patterns. The results show that transferring planting rice to planting sweet corns and vegetables significantly reduced soil acidity and the contents of hydrolytic sulfate, active aluminum and active iron in arable layer, and greatly increased economic profits. It was suggested that the environmental effects caused by transferring acid sulfate paddy soil to upland soil should be further studied and monitored in situ, so that, this special soil resource could be more rationally used.

关 键 词：酸性硫酸盐土 化学性状 水稻 旱作 土壤改良 

分 类 号：S156.6[农业科学—土壤学]