低量喷雾是近年来推广的农药喷洒技术。由于雾粒细,飘移性好,药滴覆盖密度大,工效快,药效高,因而受到广大农户欢迎。我县1984年使用0.7毫米孔径钢玉瓷喷片的手动背负式喷雾器,防治粮棉病虫草害47万亩,并在防治过程中着重进行了以下有关施药技术的试验。 Low-volume spraying is the promotion of pesticide spraying technology in recent years. Due to fine fog, good drifting, drip drip density, high efficiency and high efficacy, it is welcomed by the majority of farmers. In 1984, the county used a manual knapsack sprayer with a 0.7 mm aperture jade porcelain jets to prevent and control 47 million mu of grain, cotton and insect pests and weeds. In the course of prevention and treatment, the following experiments on application technology were emphasized.