福建农业学报Issue(8)：796-801,6.
紫云英连续3年压青还田对福建稻区土壤肥力及水稻产量的影响
Effect of Turnover of Chinese Milk Vetch (Astragalus sinicus L .) Straws in Three Consecutive Years on Fertility of Soil and Yield of Rice on Paddy Fields in Fujian
摘要
Abstract
By turning over the straws of Chinese milk vetch (Astragalus sinicus L .) after rice harvest to the paddy fields in Fujian in three consecutive years ,the effects of the organic farming practice on the soil fertility and rice productivity were studied . The result showed that ,as compared with the control ,the organic matters in the soil increased by 15.8% on average when the straws were turned over at a rate of approximately 22 500 kg ・ hm - 2 per year . And ,the bulk density of the soil declined by 8.7% . Both of the above reached significant difference . Furthermore ,the total N , P ,K ,effective P and available K in the soil increased by 18.4% ,16.7% ,9.5% , 19.7% and 70.5% ,respectively . In comparison with the chemical fertilization ,a significant 6.8% increase on the rice output from the straw-turnover was realized from the gains in panicle and grains per panicle .Consequently ,the practice could be promoted in the province to benefit the fertility of the soil as well as the productivity of the rice .关键词
紫云英/压青还田/土壤肥力/水稻产量Key words
Chinese milk vetch (Astragalus sinicus L .)/straw turnover/soil fertility/rice productivity分类
农业科技引用本文复制引用
黄功标..紫云英连续3年压青还田对福建稻区土壤肥力及水稻产量的影响[J].福建农业学报,2013,(8):796-801,6.基金项目
国家财政部耕地地力保护专项（20090819）；福建省冬季农业示范专项 （）
