蜀柏毒蛾生物学特性及防治

Bionomics of parocneria orienta Chao and its control

1990～1991年，作者在四川平昌县对蜀柏毒蛾生物学特性及防治进行了调查研究。结果如下：蜀柏毒蛾在四川1年发生2代，以幼虫越冬；常年以越冬代的5、6龄幼虫危害较重，危害盛期从5月上旬至6月上旬，林间高温干旱气候和天敌种类及数量的锐减是导致蜀柏毒蛾猖獗的主要因素；提出以科学营林增加灭敌种类和数量的营林防治和生物防治为主的综合防治措施。

This paper reports the results of studies on the bionomics of parocneria orienta Chao and its control in Pingchang region, Sichuan, from 1990~ 1991. Parocneria orienta Chao reproduces two generations one year. It lives though the winter with its larvae. The fifth and sixth instar larvae of the second generation,namely the first ten days of May to the first ten days of June, are the most harmful Period of thes insect.The high temperature and arid climate and great reducing the kinds and amounts of natural enemjes in the forestzone are the major factors resulting in its rampant occurrence.This paper taises tha increasing the kinds and amounts of the natural enemies of parocneria orienta Chao through constructing forest scientifically may be the major mesasures of its comprehensive control.