核农学报2017，Vol.31Issue(12)：2399-2407,9.DOI:10.11869/j.issn.100-8551.2017.12.2399
紫云英配施氮肥对双季稻产量、干物质量及氮素吸收利用的影响
Effects of Combining Chinese Milk Vetch With Nitrogen Fertilizer on Grain and Dry Matter Yield, Nitrogen Absorption and Utilization of Double-cropping Rice
摘要
Abstract
In order to study effect of combining Chinese milk vetch with nitrogen fertilizer on rice yield,dry matter,nitrogen absorption and utilization,a double cropping paddy field experiment was conducted in Yujiang Jiangxi province from October 2014 to November 2016,There were 5 treatments,including fallow in winter without nitrogen,Chinese milk vetch (Astragalus sinicus L.) without nitrogen,Chinese milk vetch with 90 kg· N· hm-2 nitrogen (Nitrogen reducing application),and Chinese milk vetch with 150 kg· N·hm-2 nitrogen (Conventional nitrogen application),and Chinese milk vetch with 225 kg· N· hm-2 nitrogen(High nitrogen application).The results showed that,compared with the winter fallow treatment,the average grains per panicle in early and late rice under Chinese milk vetch with nitrogen treatments were increased by 23.20％ and 14.15％,respectively,while the average yield were increased by 17.75％ and 28.32％,respectively.Yield in early and late rice with conventional nitrogen application was the highest,and increased by 20.55％ and 30.49％,respectively,followed by reducing nitrogen use,increased by 19.48％ and 28.13％,respectively.Compared with the winter fallow treatment,dry matter amount of early and late rice under Chinese milk vetch treatment were increased by 15.57％ ～ 36.21％ and 14.41％ ～ 24.89％,respectively,whereas,rice nitrogen absorption also increased about 60.24％ ～ 93.04％.Compared with Chinese milk vetch without nitrogen treatment,dry matter of treatments with Chinese milk vetch with nitrogen increased by 20.14％ ～28.35％ and 14.79％ ～18.07％ in early and late rice,respectively.However average nitrogen uptake (two years mean)increased by 40.73％ ～69.53％.Treatment of reduced nitrogen on rice recovery efficiency,agronomic efficiency and nitrogen partial productivity were the highest,increased by 43.18％,64.55％,56.14％,respectively.In conclusion,Chinese milk vetch with reducing nitrogen use had the highest nitrogen use efficiency cropping pattern in this area.This study provided a scientific basis for improving the efficient utilization of nitrogen fertilizer resources and protecting the ecological environment of rice fields.关键词
紫云英/氮肥/干物质/氮素利用率Key words
Chinese milk vetch/nitrogen fertilizer/dry matter/nitrogen use efficiency引用本文复制引用
马艳芹,钱晨晨,邓丽萍,黄国勤..紫云英配施氮肥对双季稻产量、干物质量及氮素吸收利用的影响[J].核农学报,2017,31(12):2399-2407,9.基金项目
国家重点研发计划课题(2016YFD0300208),国家自然科学基金(41661070) （2016YFD0300208）
