水土保持学报2018，Vol.32Issue(1)：320-326,7.DOI:10.13870/j.cnki.stbcxb.2018.01.050
不同有机物施用对油菜-红薯轮作模式下养分吸收利用的影响
Effects of Different Organic Matters Application on Nutrient Absorption and Utilization in Rape and Sweet Potato Rotation Mode
摘要
Abstract
This study investigated the effects of different organic materials on soil fertility and crop nutrient absorption and utilization,so as to achieve farmland fertilization and improve crop nutrient use efficiency.A field fertilization experiment was conducted in Jiangxi Institute of Red Soil in 2015 to compare the effects of full scale chemical fertilizer and 40％ of chemical fertilizer combined with different organic materials on soil fertility and crop nutrient use efficiency.Nine fertilization treatments were set in this experiment,including no fertilizer (CK),chemical fertilizer (CF),reduction of chemical fertilizer (RF),chemical fertilizer combined with straw (CFR),reduction of chemical fertilizer combined with straw (RFR),chemical fertilizer combined with biochar (CFB),reduction of chemical fertilizer combined with biochar (RFB),reduction of chemical fertilizer combined with pig manure (RFP),reduction of chemical fertilizer combined with vermicompost (RFV).The results showed that compared with the treatments of CF that added chemical fertilizer only,the application of organic materials increased the yields of rapeseed and sweet potato,and the yields in RFPand RFV treatments increased significantly,with an increase of 76.69％ and 75.01％,84.73％ and 69.72％,respectively.The application of organic materials enhanced the content of organic matter,total nitrogen,total phosphorus,available phosphorus and potassium,and the soil nutrient level was also further improved under continuous fertilization.In sweet potato and rape seasons,compared with the CF treatment,the application of organic materials could promote the apparent recovery efficiencies and partial factor productivities of nitrogen and potassium fertilizers,and the effect of RFP treatment was best in sweet potato season,the corresponding parameters increased to 43.22％,48.55％ and 22.00 and 21.45 kg/kg respectively,however,the apparent recovery efficiency (1.91％) and partial factor productivity (3.25 kg/kg) of phosphorus in this treatment were low.In rape season,fertilizer contribution rate in the RFV treatment was the highest (80.41％),but the agronomic efficiency was low,which was just 0.67 kg/kg.Therefore,the application of organic materials can improve soil fertility,increase crop yield and the utilization of fertilizer nutrients,which is significance for agricultural production.关键词
有机物施用/土壤培肥/养分利用率Key words
organic application/soil fertility/nutrient utilization efficiency分类
农业科技引用本文复制引用
邬梦成,李鹏,张欣,成艳红,李大明,刘满强,李辉信,胡锋,焦加国..不同有机物施用对油菜-红薯轮作模式下养分吸收利用的影响[J].水土保持学报,2018,32(1):320-326,7.基金项目
公益性行业(农业)科研专项(201503121) （农业）
国家重点研发计划项目(2016YFD0200106) （2016YFD0200106）
