湖南农业大学学报（自然科学版）2013，Vol.39Issue(2)：188-193,6.DOI:10.3724/SP.J.1238.2013.00188
基于紫云英利用的化肥施用方式对水稻产量和土壤碳氮含量的影响
Effect of fertilizer management on rice yield, soil organic carbon and total nitrogen based on utilizing the milk vetch
摘要
Abstract
A four-year (2008-2011) long term experiment was carried out to study the effects of different chemical fertilizer management on rice yield, paddy economic benefits, total nitrogen(N) accumulation, soil carbon(C) and nitrogen under the utilization of milk vetch (22 500 kg/hm2). The results were as follows: ①Compared with fanners'fertilizer practice (FFP), fertilizers application delayed appropriately could increase rice yields. Among all treatments, treatments of 20% or 40% chemical fertilizer cut down could only increase 2.37% and 3.34% grain yield respectively than that of combined treatment of basal fertilizer + tillering fertilizer + panicle fertilizer (the ratio was 3 : 4 : 3) (Treatl), which was followed by the treatment of basal fertilizer + tillering fertilizer + panicle fertilizer (the ratio was 0 : 7 : 3) (Treat2).②The appropriate postponed fertilizers application could increase rice output value. Treatl could increase 3.0% average annual output value, followed by Treat2. ③The fertilizers application time postponed could improve total nitrogen accumulation in rice (TNA), N grain production efficiency (NGPE), N partial factor productivity (NPF) and N harvest index (NHI). Treatlwas the best one in improving TNA, NGPE, NPF and NHI among all treatments. ④The retarded fertilizers application could also increase the content of soil organic carbon (SOC) and soil total nitrogen (TN). Treatl had the best effect in improving SOC and TN. Through the above comparison, the appropriate retarded use of combined fertilizers, which was composed of 30% basal fertilizer + 40% tillering fertilizer and 30% panicle fertilizer was a better approach for increasing rice yield and for enhancing soil fertility under the condition of utilizing milk vetch.关键词
双季稻/紫云英/化肥/产量/经济效益/氮素累积量/土壤碳含量/土壤氮含量Key words
double-rice cropping/ Chinese milk vetch(Astragalus sincus)/ fertilizer/ yield/ economic benefits/ total N accumulation/ content of soil C/ content of soil N分类
农业科技引用本文复制引用
周兴,谢坚,寥育林,杨曾平,鲁艳红,徐文仕,涂赛军,聂军,曹卫东..基于紫云英利用的化肥施用方式对水稻产量和土壤碳氮含量的影响[J].湖南农业大学学报（自然科学版）,2013,39(2):188-193,6.基金项目
农业公益性行业科研专项(201103005-08) （201103005-08）
国家"十二·五"科技支撑计划项目(2012BAD05B05-3) （2012BAD05B05-3）
国际植物营养研究所(IPNl)资助项目(Hunan-16) （IPNl）
