长江流域的江汉平原气候暖和、雨量充沛、土壤肥沃、植物繁茂,蜗牛的繁殖十分迅猛,加之过去缺乏良好的防治方法,因而为害逐年加重。至七十年代宋,旱地内的蜗牛成、幼贝每平方米普遍上升到百头左右,部分田内多达350余头。棉苗及早杂、蔬菜作物大面积受害,轻者叶肉被舔食,使叶片残缺,影响作物正常生长发育,重者造成缺苗断垄,以致补种毁种多次。我场地处江汉平原北部,蜗牛之患尤甚,全场12,400亩耕地中,除水田4,000亩外,无一幸免。1969年春,中国科学院动物所陆生贝类研 The Jianghan Plain in the Yangtze River has a warm climate, abundant rainfall, fertile soil and luxuriant plants. The breeding of snails is very rapid. In the past, the lack of a good prevention and control method has resulted in increasing pests. To the seventies Song, snail into the dry land, young Pui per square meter generally rose to about one hundred, part of the field up to more than 350 head. Cotton seedlings and early miscellaneous, large areas of crop damage vegetables, the light of the leaves were licked, leaving the leaves incomplete, affecting the normal crop growth and development, resulting in severe lack of seedlings off ridge, resulting in replanting destroyed many times. My field is located in the northern part of the Jianghan Plain, especially for snails. Of the 12,400 mu of cultivated land, 4,000 mu of paddy fields have not been spared. The spring of 1969, Institute of Animal Habitat terrestrial shellfish research