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核桃黑小吉丁虫是我区已发现的三种核桃吉丁虫中最严重的一种。它们在核桃产区普遍发生,造成枝条干枯,幼树死亡,产量大幅度下降。如洛南县四皓公社未村林场核桃树受害率达98%,柴峪大队核桃幼树死亡10%,丹凤县武关公社武关林场核桃产量1966年到1970年由7,050斤降到1,800斤,约减产75%。1972年以来,我们在武关林场和洛南石门公社红旗大队对核桃黑小吉丁虫等进行了定点观察和防治试验,现小结如下。
Walnut black jitian bug is my region has been found in three kinds of walnut jibinus one of the most serious. They are common in the walnut producing areas, causing the branches to dry up and the young trees to die, with a sharp drop in output. Such as Luonan County Sihao commune unburied forest walnut tree damage rate of 98% Chaiyu brigade walnut sapling death 10%, Danfeng County Wuguan commune Wuguan forest walnut production from 1966 to 1970 from 7,050 pounds down to 1,800 Kg, about 75% cut. Since 1972, we conducted spot observation and prevention and control experiments on the walnut black jelly bug in the Wuguan Forest Farm and the Red Flag Brigade of Shilan Commune in Luoyang. The results are summarized as follows.