论文部分内容阅读
柏木(Cupressus funebris Endl.)是四川省嘉陵江、沱江、渠江流域及其支流海拔300至1800米的紫色土地区分布广泛的优良树种,是发展造林的主要用材树种之一。但近年来其种子大量减产,其主要原因之一,实为柏木丽松叶蜂(Augomonoctenus smithi Ziao et Wu)严重危害所致。例如1981年四川省产种子50万斤,1982年下降到18万斤;金堂县1981年产种子8000斤,1982年下降到2500斤。1983年我们在金堂县悦来公社对此虫进行定点研究,现将初步结果报道如下:
Cupressus funebris Endl. Is a widely distributed fine tree species in the Jialing River, Tuojiang River, Qujiang River and its purple soil areas of 300 to 1800 meters above sea level in Sichuan Province. It is one of the main timber species for afforestation. However, one of the main reasons for the large-scale reduction of its seeds in recent years is the serious damage caused by Augomonoctenus smithi Ziao et Wu. For example, in 1981 Sichuan Province produced 500,000 jin of seeds, dropping to 18 million jins in 1982; Jintang County, producing 8000 jins in 1981, dropping to 2,500 jin in 1982. In 1983, we Jintang County Polaris commune sentinel research on the worm, the preliminary results are reported below: