红壤连作花生青枯病发病规律及病原菌分离  

Development Regularity and Isolation of Bacterial Wilt with Peanut Continous Croping on Red Soil

作　　者：王小兵[1,2,3] 骆永明[1,2] 刘五星[1] 李振高[1] 

机构地区：[1]中国科学院土壤环境与污染修复重点实验室,南京土壤研究所,江苏南京210008 [2]中国科学院研究生院,北京100049 [3]扬州大学环境科学与工程学院,浙江扬州225009

出　　处：《花生学报》2010年第2期6-10,共5页Journal of Peanut Science

基　　金：国家自然科学基金重点项目(40432005);中国科学院知识创新工程重要方向项目(CXTD-Z2005-4)

摘　　要：以中国科学研究院红壤生态实验站花生连作障碍长期施肥试验为平台,研究了经过连续12年不同施肥处理后连作花生病害的发病规律,并分离其病原菌。结果表明,所有施肥处理的连作花生都有不同程度的发病。施用化肥的处理(F)花生发病率最高,到结荚期时已达68%,而有机肥+有效菌剂的处理(BM)发病率在8%左右,这表明有机肥及配施有效菌剂能够有效抑制连作花生土传病害的发生。通过分离和鉴定,发现青枯病是连作花生主要病害,其病原菌是青枯雷尔氏菌(Ralstonia solanacearum)。Based on a long-term fertilization experiment of peanut continuous cropping obstacles, which had been established in Red Soil Ecological Station, Chinese Academy of Sciences from 1996, it was explored the development regularity of Peanut Bacterial Wilt with 12-year contiuous fertilization. The resluts showed that soil-borne disease occurred in all treatments. The peanut soil-borne diseases incidence of chemical fertilizer treatment （F） was 68% in maturing stage, while organic manure ＋ effective microorganisms treatment （BM） was about 8%. Organic manure or organic manure ＋ effective microorganisms could control the occurence of peanut soil-borne diseases. Peanut bacterial wilt was the main soil-borne disease of continuous cropping peanuts and its pathogens was identified as Ralstonia solanacearum.

关 键 词：红壤连作 花生青枯病 发病规律 分离 施肥 

分 类 号：S565.2[农业科学—作物学] S435.652