湖南农业大学学报（自然科学版）2017，Vol.43Issue(5)：469-474,6.DOI:10.13331/j.cnki.jhau.2017.05.001
减量施肥下紫云英与稻草协同利用对双季稻产量和经济效益的影响
Effects of Chinese milk vetch and rice straw synergistic dispatching on grain yield and economic benefit of double cropping rice system under fertilizer reduction
摘要
Abstract
A successive 5-year field experiments were designed to study the effects of different treatments of Chinese milk vetch and rice straw on rice yield, agricultural character and economic benefit at purple soil region in Dongting Lake. Compared to F100, the results showed that different treatments of Chinese milk vetch and rice straw could maintain a stable or slight yield increase under the reduction of 20% chemical fertilizer application. The synergistic effects of Chinese milk vetch and rice straw had advantage over the single treatments of Chinese milk vetch or rice straw on rice yield increase. Synergistic treatment of F80+HR+A, one of Chinese milk vetch + rice straw treatments, was more suitable for increasing 5-year average yield for early, later rice, net income and the rate of remuneration of marginal cost, they were 20.2%, 11.9%, 13.7% and 3.4 Yuan/Yuan respectively, which were greater than that of F100 with the difference reached to the significant level (P<0.05). The increase of plant height, filled grain number per panicle, 1000-grain weight in early rice and plant height, efficient panicle, filled grain number per panicle in later rice were the main contributions to high rice yield. Returning high pile of straw and planting Chinese milk vetch in winter not only increased rice yield, but also achieved the best economic benefits, as well as reduced the amount of chemical fertilizer.关键词
减量施肥/紫云英/稻草/水稻产量/经济效益Key words
reduction fertilizer/Chinese milk vetch/rice straw/rice yield/economic benefits分类
农业科技引用本文复制引用
周兴,廖育林,鲁艳红,王宇,聂军,曹卫东..减量施肥下紫云英与稻草协同利用对双季稻产量和经济效益的影响[J].湖南农业大学学报（自然科学版）,2017,43(5):469-474,6.基金项目
国家绿肥产业技术体系项目(CARS-22) （CARS-22）
国家重点研发计划项目(2017YFD0301504,2016YFD0300900) （2017YFD0301504,2016YFD0300900）
湖南省农业科学院科技创新项目(2017JC47) （2017JC47）
国际植物营养研究所科研项目(IPNIHunan-18) （IPNIHunan-18）
