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番木瓜Carica papaya L.有“岭南佳果”之称,广州地区近年来种植面积越来越大。但是,由于病虫为害,使产量和质量都相对下降。皮氏叶螨Tetranychus piercei McG。就是主要兽虫之一。1980—1981年,我们对这种害螨进行了研究,现将结果简报如下。 1.生活史 我们对不施药区、少施药区和常施药区三种不同类型的番木瓜进行了调查。在全年日平均气温为22.2℃、相对湿度为76.6％、日照5.3小时、全年总降雨量为1492.2毫米的环境下,这种害螨在全年发生最高峰,不
Papaya Carica papaya L. “Lingnan good fruit,” said the Guangzhou area growing area in recent years more and more. However, due to pests and diseases, the yield and quality are relatively reduced. Tetranychus piercei McG. It is one of the major beasts. We studied this pest mite from 1980 to 1981 and present the results below. 1. History of life We do not apply the area, less application area and often administered three different types of papaya were investigated. In the annual average temperature of 22.2 ℃, relative humidity of 76.6%, 5.3 hours of sunshine, the annual total rainfall of 1492.2 mm environment, the pest mites peaked throughout the year, not