金针菇软腐病的研究

A Study on Soft Rot of Flammulina velutipes.

金针菇软腐病是近年来普遍发生的病害，病菌初步鉴定为Ｃｌａｄｏｂｏｔｒｙｕｍｓｐ。菌丝生长的适宜温度为１３～２７℃，最适１５～１９℃；适宜ｐＨ值为５．６～８．１，最适为６．０。在马铃薯蔗糖琼脂培养基上生长最好。病害发生期在１０月下旬至１１月和３～４月。气温高（１５℃以上）、湿度大的年份发病严重。室内药剂抑菌试验结果表明：０．０１０％～０．００１％百菌清和０．０５％～０．２０％多菌灵对该病菌的菌丝生长具有１００％抑菌率。本文对病菌的防治措施提出了建议。

In recent years,soft rot of Flammulina velutipes caused by Cladobotryumsp. has become a widespread disease. The experiment showed that thesuitable temperature and pH values for the mycelia were 13～27℃ and5.6～8.1,and the optimal 15～19℃ and 6.0, respectively.The pathogengrew better on PSA medium than on others.The disease occurred from lateOctober to November and from March to April.High temperature(morethan 15℃)and moist environment were favourable to the infection of thedisease。The chemical contrl in the labortory indicated that 100 percentbacteriostatic rate of the mycelia could be achieved by using 0.001～0.010percent daconil and 0.050～0.200 percent bavistin。