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思南县近十多年来大面积进行化学防治,农药用量不断增加,常年用量约占全省的十分之一,其中仅一个塘头区的用量即达全县的三分之一以上。本文就塘头坝农药的使用情况进行分析,探讨在生产实践中如何科学用药和合理用药的问题。一、现状塘头坝地势低平,海拔420m,常年平均气温17.5℃,每年4～10月常月气温23.2℃,相对湿度78.7％,年降雨量1100mm,全区10个公社,稻田28477亩。其中芭蕉、尧民、塘头三个公社位于龙底江两岸,俗称“万亩大
Over the past ten years Sinan County, a large area for chemical prevention and control, increasing the amount of pesticides, perennial consumption accounts for about one-tenth of the province, of which only one Tangtu amount of the county that is up to more than one-third. This paper analyzes the use of pesticides in Tangtou dam and explores how to use it scientifically and rationally in production practice. First, the status quo Tongtou low flat terrain, elevation 420m, perennial average temperature of 17.5 ℃, annual April to October the monthly temperature of 23.2 ℃, relative humidity of 78.7%, the annual rainfall of 1100mm, the region 10 communes, 28,477 acres of paddy fields. One banana, Yao people, Tangtu three communes located on both sides of the Dragon River, commonly known as "million mu