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苹掌舟蛾 Phalera flavescens(Bremer et Grey)是分布广泛、为害严重的果树害虫之一,是多种落叶果树和阔叶林木夏秋季一个普遍发生的食叶性毛虫。该虫近年来在吉林省各地大有加重危害的趋势。由于苹掌舟蛾寄主较多,为害时间长,幼虫食量大,又多群集取食,所以大发生时如防治失时,常可造成果树秃枝而严重削弱树势,影响果树当年和翌年产量及林木的正常生长发育。本试验对该害虫的生物学特性、药剂防治和预测预报的数学模型进行了较为系统的研究,现将结果总结如下。
Phalera flavescens (Bremer et Gray) is one of the most widely distributed and devastating pests of fruit trees. It is a common leaf-eating caterpillar in many deciduous and deciduous forests in summer and autumn. In recent years, the insects have greatly aggravated the trend of harm in various parts of Jilin Province. Due to the host of the apple palm moth more damage for a long time, larvae food intake, but also more cluster feeding, such as prevention and treatment of large loss of time, often can cause fruit tree bald and seriously weaken the tree vigor, affecting the fruit tree the following year and the next year production And the normal growth and development of trees. This experiment conducted a systematic study of the biological characteristics of the pest, chemical control and forecasting of the mathematical model, the results are summarized as follows.