果园和浆果园内在为害最凶的害虫中占有相当地位的是软体动物。大体上,这样一类的各种不同的蛞蝓,在多湿的年份,气温在10—20℃时大量出现。白天,它们通常隐蔽在多阴的潮湿地方、石块下、落叶下、木梗下,晚间,积极地取食植株的绿色部份,使产量遇受很大的损失。在果园里经常遇到的软体动物有下列几种。 In the orchards and orchards in the most harmful pests occupy a considerable position is molluscs. In general, a variety of different types of 蛞 蝓 in the wet years, the temperature at 10-20 ℃ when a large number of occurrence. During the day, they usually hide in the cloudy, wet areas, under stones, under fallen leaves, and under the stems of wood and in the evening they actively feed on the green parts of the plants, causing great losses in production. There are the following types of molluscs often encountered in orchards.