花生叶部菌核病流行规律及生物防治初报  

Preliminary Report of Epidemiology and Biocontrol of Rhizoctonia solani kühn in Peanut Leaves

作　　者：鄢洪海[1] 赵志强[2] 卢钰[3] 夏淑春[1] 况川[1] 徐秀娟[2] 迟胜起[1] 

机构地区：[1]莱阳农学院植保系,山东青岛266109 [2]山东省花生研究所,山东青岛266100 [3]青岛理工大学,山东青岛266033

出　　处：《花生学报》2006年第3期28-31,共4页Journal of Peanut Science

基　　金：国家"十五"科技攻关项目(2001BAS07A-07);山东省博士基金项目(9964)

摘　　要：花生叶部菌核病[Rhizoctonia solani kühn]是近几年在我国发生的一种新病害，始发期为7月上旬，盛发期为7月下旬到8月上旬。以危害叶片为主，特别是新生嫩叶受害最重，发病后期造成花生大量落叶，一般年份减产10％～20％，严重时达30％以上。田间试验和室内抑菌测定结果表明：一种绿色木霉[Trichoderma.spp]生防菌LN-02对叶部菌核病具有防治作用，生防机制研究表明：生防菌LN-02主要通过重寄生作用抑制病原菌生长发育。Rhizoctonia solani kühn was a new disease in peanut in China in recent years. It occurred in early July and spreaded from late July to early August which mostly damaged the leaves, especially the burgeon. In the late of the disease, the peanut began to lay off lots of leaves. The yield was reduced by 10%-20% in regular years and 30%~ at serious period. Field experiment and ＇laboratory testing indicated that LN - 2 [Trichoderma. spp] could control the disease. The biocontrol mechanism investigation showed that biological agents LN- 02 restrained the pathogen to grow mainly by mycoparasitic activities.

关 键 词：花生叶部菌核病 流行规律 生防菌LN-02 防效测定 

分 类 号：S565.2[农业科学—作物学] S435.652