摘要
由于农药的应用大大地减轻了病虫草害对粮食作物的侵害，农药工业在世界范围内得到了迅速发展。但是随着用药量的不断增加，农药与环境之间的矛盾日益突出。人畜农药直接中毒，粮食、蔬菜和水体被污染在加重。病虫草抗药性的增加及其天敌、益虫的减少使得农业生态系统面临失衡的危险。这一切都提示人们必须减少农药使用量。农药超量使用的一个重要原因是施药技术不能适应农药本身的发展而使药效不能充分发挥。改善施药技术，提高药效已成为刻不容缓的任务。
It is an urgent subject to improve the pesticide applying techniques and develop new sprayers. That the techniques of pesticide application cannot catch up with the development of pesticide is a key reason of resulting in ineffective use of pesticide. As the amount of pesticide used in fields or orchards keeps growing rapidly these a few decades, problems are coming with the environmental pollution, the resistance of pests to pesticide and the decrease of natural enemies, which unavoidably lead people to face the danger of destroying the balance of the agroecosystem. All these signs remind people to take impressing actions to control the use of pesticide to a reasonable extent.
出处
《农业工程学报》
EI
CAS
CSCD
北大核心
1998年第2期7-12,共6页
Transactions of the Chinese Society of Agricultural Engineering
基金
国家自然科学基金
关键词
农药
超量使用
施药技术
农药使用
药量
pesticide, overuse, pesticide applying techniques, reducing dosage
