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梨黑星病(Venturia pirina Aderh)是梨树(P-yrus sp.)上主要病害之一。1985～1986年我们在密云县栗榛村开展了梨黑星病化学防治适期及8种杀菌剂田间防治效果试验,结果如下: 一、梨黑星病化学防治适期 关于梨黑星病防治适期,国内多数植保工作者
Venturia pirina Aderh is one of the major diseases on P-yrus sp. From 1985 to 1986, we carried out the chemical control of Pear Scytomycetes and the field effect of eight kinds of fungicides in Li Zhen Village, Miyun County. The results are as follows: First, the chemical control of Pear Scab Period, the majority of domestic plant protection workers