土壤2023，Vol.55Issue(6)：1216-1222,7.DOI:10.13758/j.cnki.tr.2023.06.007
紫云英和秸秆替代部分化肥对双季稻产量、养分含量及土壤综合肥力的影响
Effects of Chinese Milk Vetch and Straw Substituting Fertilizers on Double Rice Yields,Nutrients and Soil Integrated Fertilities
摘要
Abstract
Based on four consecutive years of field experiment including the following 6 treatments:1)Winter fallow + N,P,K(CF);2)Winter fallow + low amount of rice straw returning + N,P,K(RSL);3)Winter fallow + high amount of rice straw returning+ N,P,K(RSH);4)Chinese milk vetch + N,P,K(MV);5)Chinese milk vetch + low amount of rice straw returning + N,P,K(MV+RSL);6)Chinese milk vetch + high amount of rice straw returning + N,P,K(MV+RSH),this study comparatively analyzed rice yields,soil integrated fertilities(IFIs)and plant nutrients under the above treatments.In early rice season,rice yield remained stable when the organic substitution ratio was kept within 20%but significantly decreased when the substitution ratio reached 39%.In late rice season,compared with the CF treatment,organic matter returned significantly increased soil organic matter and total nitrogen contents,among which RSH treatment had the most significant effect,increased by 11.15%and 7.64%,respectively.Different proportions of Chinese milk vetch and straw replacing chemical fertilizers improved soil IFIs,IFI of MV+RSH treatment increased by 8.5%compared with RSH treatment,and the treatments including MV or RSH significantly increased rice phosphorus and potassium contents compared with CF treatment.In conclusion,under the equal nutrient inputs,using 2500 kg/hm2 rice straw replacing 20%chemical fertilizers could ensure stable rice yield and increase soil fertility.The co-utilization of Chinese milk vetch and rice straw significantly increased soil fertility,however,the over-representation of organic substitution may result in diminished output in a short time.关键词
紫云英/秸秆/双季稻/土壤肥力/植株养分Key words
Chinese milk vetch/Straw/Double cropping rice/Soil fertility/Plant nutrient分类
农业科技引用本文复制引用
袁浩亮,张江林,鲁艳红,廖育林,高雅洁,孙玉桃,曹卫东,聂军..紫云英和秸秆替代部分化肥对双季稻产量、养分含量及土壤综合肥力的影响[J].土壤,2023,55(6):1216-1222,7.基金项目
国家重点研发计划项目(2021YFD1700200),现代农业产业技术体系建设专项资金项目(CARS-22-G-11)和国家自然科学基金联合基金项目(U19A2046)资助. （2021YFD1700200）
