摘要
对紫色水稻土自然免耕生态系统中土壤动物群落结构的变化及其对土壤养分的影响进行了调查研究。结果表明．水稻土免耕耕作制度有利于土壤动物的生长繁殖．并能改善土壤化学性质。土壤动物平均密度是垄作免耕＞垄作常耕＞平作免耕＞平作常耕。免耕土壤中有效氮、有效磷、有效钾和有机质含量均分别高于常耕土壤。
The differen structures of soil animal communitites and their effects on soil nutrients have been investigated and studied in non-tillage violet soil paddy field ecosystems.The results show that paddy soil non-tillage cropping system is beneficial to the growth and reproduction of soil animals,and is also helpful to the improvement of soil chemical properties.The results also indicate that the average density of soil animal in non-tillage ridge cultured soil is the highest,in conventional tillage ridge cultured soil the second,in non-tillage level cultured soil the third,and in conventional tillage level cultured soil the lowest.The contents of available N,P,K and organic matter in non-tillage soil are all higher than that of in conventional tillage soil.
出处
《农村生态环境》
CSCD
1996年第4期8-10,14,共4页
Rural Eco-Environment
关键词
紫色水稻土
免耕
土壤动物
土壤养分
生态系统
violet paddy soil,non-tillage,soil animal,community structure,soil nutrient
