玉米-大豆轮作对根际土壤微生物数量及养分含量的影响
Effects of Maize-Soybean Rotation on the Quantity and Nutrient of Rhizosphere Soil Microorganisms
徐佳 1赵玉山 1魏云山 1周学超 1丁素荣 1王燕春1
作者信息
- 1. 赤峰市农牧科学研究所,内蒙古 赤峰 024031
- 折叠
摘要
大豆连作易造成土壤微生态破坏、病虫害加剧,减产严重.玉米-大豆轮作是农业生产上的重要耕作措施,具有调节修复土壤微生态作用.文章通过田间定位试验,分析不同玉米-大豆轮作方式对根际土壤微生物数量及养分含量的影响.结果表明,相较玉米、大豆连作,玉米-大豆轮作可显著促进根际土壤细菌和放线菌繁殖,降低真菌数量.此外,玉米-大豆轮作还可提高根际土壤有机质和碱解氮等土壤养分含量,对作物生长发育有利.在生产中,MSS(玉米-大豆-大豆轮作)处理为适宜推广应用的轮作栽培模式.
Abstract
Continuous cropping of soybeans could easily cause soil microbial damage,exacerbation of pests and diseases,and severe yield reduction.Maize-soybean rotation was an important cultivation measure in agricultural production,which had the function of regulating and restoring soil microecology.The article analyzed the effects of different maize-soybean rotation methods on the number of rhizosphere soil microorganisms and nutrient content through field positioning experiments.The results showed that compared to continuous cropping of maize and soybean,maize-soybean rotation could significantly promote the proliferation of rhizosphere soil bacteria and actinomycetes,and reduced the number of fungi.In addition,maize-soybean rotation could increase the nutrient content of rhizosphere soil such as organic matter and alkaline nitrogen,which was beneficial for crop growth.In production,the MSS(maize-soybean-soybean rotation)t reat ment mode was the appropriate rotation cultivation mode for promotion and application.
关键词
玉米-大豆轮作/根际土壤微生物/土壤养分Key words
Maize-soybean rotation/Rhizosphere soil microorganisms/Soil nutrients引用本文复制引用
出版年
2024
NETL
NSTL
万方数据