应用白僵菌和绿僵菌防治浙江双栉蝠蛾试验

应用高致病力球孢白僵菌Beauveria bassiana(Bals.)Vuill]B3和金龟子绿僵菌Metarhizium anisopliae(Metsch.)Sorokin]Ma1291-2菌株,以不同的施菌方式防治浙江双栉蝠蛾(Bipectilus zhejiangensis Wang),统计分析2 a的防治效果。结果表明,2菌株均体现笋基灌施的防治效果较菌土撒施好,但以3月上旬进行撒施,3月中旬进行灌施(撒施+灌施)的防治效果最好。2菌株防治后第1年的退笋率无显著差异,而绿僵菌防治后第2年退笋率显著较低。以撒施+灌施防治后第1年和第2年,白僵菌B3菌株的防治效果分别为72.20%和36.76%,绿僵菌Ma1291-2菌株的防治效果分别为79.28%和48.70%。因此,2菌株均有林间应用价值,并以不同时间撒施+灌施的施菌方式防治,效果更佳。

Experiment of Beauveria bassiana and Metarhizium anisopliae on controlling Bipectilus zhejiangensis

Highly pathogenic Beauveria bassiana strain B3 and Metarhizium anisopliae strain Ma1291-2 were used for controlling Bipectilus zhejiangensis with different release methods.The results of 2-year controlling showed that effects of root irrigation was better than that of spreading with 2 strains,otherwise,the best effect was using 2 methods contemporarily(spreading+irrigation) in different time(root irrigation in mid-March after spread in early March).There were no significant differences of the degraded shoot rate controlled between Beauveria bassiana and M.anisopliae in the first year,but the degraded shoot rate being controlled with strain Ma1291-2 was lower significantly in the second year.By root spreading+irrigation with B3,the effects were 72.20% and 36.76% respectively in the first year and second year,and that of Ma1291-2 was 79.28% and 48.70% respectively.Therefore,the 2 strains have application value for controlling Bipectilus zhejiangensis in forests,and the effect of application by root spreading+irrigation root was better in different time.