宁夏速生杨人工林春尺蠖发生规律的研究

Study on the Occurrence Law of Spring Inchworm in Fast-growing Poplar Plantation in Ningxia

2015年,春尺蠖在中冶美利西部生态林基地爆发成灾。春尺蠖是一种爆发性的食叶害虫,在宁夏地区1年发生1代。春尺蠖以蛹的形态在被害树附近10~15 cm土层内越冬,第2年3月初,羽化成虫,产卵于粗糙树缝、树皮内。4月上旬是虫卵的孵化高峰期,4月中下旬是幼虫的暴食期。5月中旬,老熟幼虫开始入土化蛹。本文研究了宁夏地区速生杨人工林春尺蠖的发生规律,以期为宁夏地区速生杨春尺蠖的防控工作提供指导。

In 2015,spring inchworm broke out in the ecological forest base in the west of MCC Meili.Spring inchworm is an explosive leaf eating pest,which occurs once a year in Ningxia.Spring inchworm overwinters in the form of pupa in the soil layer of 10~15 cm near the killed tree.At the beginning of March of the second year,it eclipses into adults and lays eggs in the cracks and bark of rough trees.The hatching peak of insect eggs is in the first ten days of April,and the overeating period of larvae is in the middle and last ten days of April.In mid May,the mature larvae began to pupate.This paper studied the occurrence law of spring inchworm in fastgrowing poplar plantation in Ningxia,in order to provide guidance for the prevention and control of fast-growing poplar inchworm in Ningxia.