砂田轮作模式对土壤微生物区系的影响

目的]研究砂田轮作模式对土壤微生物区系的影响,从而通过制定合理的栽培制度创造良好的土壤生态环境,为促进农业的可持续发展提供理论依据。方法]对宁夏中卫市香山地区压砂地土壤进行取样,并进行了微生物区系的分析。结果]西瓜(Citrulluslanatus)与绿豆(Vigna radiata)、南瓜(Cucurbita moschata)、油葵(Helianthus annuus)、西葫芦(Cucurbita pepo L.)、芝麻(Sesamum indicum)轮作,土壤微生物多样性指数均高于西瓜连作。结论]轮作能有效调节土壤微生物区系,有利于微生物群落的多样性和稳定性的提高,最终改善了土壤的微生态环境,其中以西瓜→南瓜效果最好。

Effects of Different Rotation Modes on Microbial Population in Gravel Mulched Field

Objective] The purpose was to study the effects of different rotation modes on microbial population in gravel mulched field,then create good soil ecological environment by drawing up reasonable cultivation system to provide a theoretical basis for promoting agricultural sustainable development of agriculture.Method] Soil samples were taken from gravel mulched field in Xiangshan Area,Zhongwei City,Ningxia Hui Autonomous Region and their microbial population was analyzed.Result] Compared with the watermelon continuous crop,the microbial diversity index was higher in the planting mode of mung bean(Vigna radiata),pumpkins(Cucurbita moschata),oil sunflower(Helianthus annuus),squash(Cucurbita pepo L.) and sesame(Sesamum indicum) rotating with watermelon(Citrullus lanatus).Conclusion] Rotating effectively adjusts soil microbial population,which is conducive to improving microbial population diversity and stability,and eventually improving the soil ecology environment.Among these rotation modes,squash rotation with watermelon was the best.