作　　者： ; ; ; ; ; ;

机构地区： 华南农业大学资源环境学院

出　　处： 《农业环境科学学报》 2011年第7期1344-1350,共7页

摘　　要： 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。 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%, respectively. The height, stem diameter, dry weight of plant of BOF treatment increased respectively by 15%, 26.1%and 23.7% compared to that of CF. BOF promoted the tomato growth significantly in the condition of its effective nutrient lower than that of CF. The numbers of bacteria and actinomyces in soil were increased by BOF, while the Pesudomonas solanacearum in soil was reduced evidently. The Biolog analyses showed that BOF noticeably increases carbon source utility, especially carboxylic carbon source by microbes after tomato planting 40 d. The application of BOF could adjust soil microbial community structure, and sustain a stable soil ecological system for disease suppression. BOF also improved soil quality and reduced the occurrenced of soil born disease.

关 键 词： 生物有机肥 番茄青枯病 防病效果 土壤微生物

领　　域： [农业科学] [农业科学]