退耕还林区林草复合模式土壤养分动态

被引：18

作者：

杨丁丁

罗承德

宫渊波

梁剑

机构：

[1] 四川农业大学林学园艺学院

来源：

林业科学 | 2007年 / S1期

关键词：

退耕还林; 林草复合模式; 平衡土壤溶液; 养分动态;

D O I：

暂无

中图分类号：

S714 [森林土壤学];

学科分类号：

0903 ; 090301 ;

摘要：

This paper analyzed the difference of soil nutrient and the dynamics of available nutrient in soil solution of the forest and grass composite pattern and the farmlands on site.The result showed that the content of soil total N,hydrolysable N,organic matter in forest and grass composite pattern was higher than in farmland.The content of total P,available P,total K and slowly K was lower than that in farmland.The seasonal change of NH-4+-N,NO-3--N,PO-4 3-and K+ was influenced by the growing of plant,precipitation and temperature.

引用

页码：101 / 105

页数：5

共 7 条

[1] 杨树人工林下根系的氮素循环与动态特征 [J].