在定西市半干旱区马铃薯连作田进行了新型生防菌药效试验。结果表明，该生防菌改善了连作马铃薯植株根际土壤微生物的种群结构，有效促进了植株生长，提高了马铃薯产量和薯块商品性，具有较好的促生防病效果，在生产中具有一定的推广价值。

The efficacy trials of a new biocontrol agents on continuous cropping potato were carried out in semi-arid region of Dingxi. The results showed that the biocontrol agents has a good effect on continuous cropping potato， it can improve the microbial community structure in root zone soil， promote the plant growth， improve potato yield and tuber commodity， and it has a certain application value in the production.

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国家自然科学基金课题(41161042)；甘肃省农业生物技术研究与应用开发项目(GNSW-2009-20)；甘肃省旱作区水资源高效利用重点实验室开放基金课题(HNSJJ-2011)资助