环境因子对草茎点霉SYAU-06菌株侵染鸭跖草的影响  

Effects of Environmental Factors on Effectiveness of Phoma herbarum Strain SYAU-06 against Commelina communis

作　　者：谷祖敏[1] 纪明山[1] 李兴海[1] 祁之秋[1] 

机构地区：[1]沈阳农业大学植物保护学院/辽宁省生物农药工程技术研究中心,沈阳110161

出　　处：《中国生物防治》2009年第4期355-358,共4页Chinese Journal of Biological Control

基　　金：辽宁省"十五"科技攻关项目(2006215004);辽宁省工程技术研究中心专项(200535)

摘　　要：以病叶率、病情指数和鲜重抑制率为评价指标,研究了环境条件包括温度、相对湿度、露水期和光照对草茎点霉SYAU-06菌株侵染鸭跖草的影响。结果表明,SYAU-06菌株侵染鸭跖草达到理想的除草效果,要求最适的温度范围是28～32℃,环境相对湿度保持在80%以上,接种后露水持续时间至少需要48h。保湿期的光照时间与病害发生程度成反比,光照时间越短,病害发生越严重。The effect of environment factors including temperature, relative humidity, dew period and light on the infection of Phoma herbarum strain SYAU-06 against dayflower （ Commelina communi ） were studied through analyzing three parameters of diseased leaf rate, disease index and reduction in fresh weight. The result showed 28 - 32 ℃ of temperature, over 80 % relative humidity and at least 48 h dew duration were essential for perfect control effect. The illumination in dew duration is in inverse proportion to the disease severe and short-illumination benefited the disease development.

关 键 词：草茎点霉 鸭跖草 侵染力 影响因子 真菌除草剂 

分 类 号：S451.1[农业科学—植物保护] S476