生物有机肥对番茄青枯病的防效及对土壤微生物的影响

以腐熟有机肥为载体,添加功能复合菌剂制成生物有机肥(BOF),采用盆栽试验方法,研究了该生物有机肥对番茄青枯病的防效和对土壤微生物的影响。结果表明,施用生物有机肥可显著降低青枯病的发生,在对照(CK)防效指定为0时,BOF处理达到69%,比化肥(CF)、有机肥(OF)处理分别提高了21%和14%;在有效养分低于CF处理的情况下,BOF处理的株高、茎粗、干重分别增加了15%、26.1%、23.7%,达到显著水平,表现出显著的促生效果。生物有机肥影响根际土壤中青枯菌和主要微生物菌群数量,施用BOF后,土壤中细菌和放线菌数量增加,而青枯菌数量则明显下降,在前期达到显著水平。番茄移栽后第40d的Biolog分析结果表明,施用BOF可明显提高土壤微生物对碳源尤其是土壤中胺类碳源的利用率。盆栽试验表明生物有机肥能调控土壤微生物群落结构,增强土壤微生物生态系统的稳定性和抑病性,从而提高土壤质量,减少病害的发生。

Effect of Biological Organic Fertilizer on Tomato Bacterial Wilt and Soil Microorganism

The biological organic fertilizer(BOF) made by mixing the mature compost with functional bacteria were used to control the tomato bacterial wilt by pot experiment. The results indicated that the occurrence of tomato bacterial wilt was decreased significantly by BOF and the disease-control effect reached 69.0% when the disease-control effect of CK was specified as 0. The disease-control effects of BOF compared to the chemical fertilizer(CF) and organic fertilizer(OF) treatment increased by 21% and 14%, respe...