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玉米-大豆轮作对根际土壤微生物数量及养分含量的影响

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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.
Effects of Maize-Soybean Rotation on the Quantity and Nutrient of Rhizosphere Soil Microorganisms
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.

Maize-soybean rotationRhizosphere soil microorganismsSoil nutrients

徐佳、赵玉山、魏云山、周学超、丁素荣、王燕春

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赤峰市农牧科学研究所,内蒙古 赤峰 024031

玉米-大豆轮作 根际土壤微生物 土壤养分

2024

大豆科技
国家大豆工程技术研究中心

大豆科技

影响因子:0.489
ISSN:1674-3547
年,卷(期):2024.(6)