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运用绿僵菌防治苹果食心虫,其效果使越冬茧幼虫死亡率达到96%,平均虫果率在4%以下。这一成果是西北林学院研究,延安地区农科所两年试验取得的。
The use of Metarhizium to control apple borer, the effect of overwintering cocoon larvae mortality reached 96%, the average fruit rate of less than 4%. This achievement is the result of a two-year trial by Northwest Forestry College and Yan’an Agricultural Science Institute.