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随着科学技术的飞速发展,近几年农药出现了一些新剂型用于生产,不仅省工、省药、成本低、防效高,而且克服了一些老剂型残毒高、杀伤天敌、污染境、受气候条件限制等缺点,扩大了施用范围。现介绍三个新剂型: 一、烟雾剂。烟雾剂是利用化学发热剂产生的高温,将化学性质稳定的农药气化,然后在空气中遇冷凝结成微粒,均匀地落在作物叶片正、反面,有的则直接在叶片上凝结。施药时,把药剂均匀地放在畦背上,然后点燃。此法尤其适用于大棚黄瓜地。对黄瓜霜霉病、白粉病和炭疽病均有明显的防治效果。烟雾剂不需用药械,省工、省药、安全,同时也减轻了劳动强度,防治一亩仅需10分钟。和喷雾相比,田间湿度小,从而减轻了灰霉病、炭疽病和细菌性角斑病的发生,经济效益显著。
With the rapid development of science and technology, some new formulations of pesticides have emerged for production in recent years. They not only save labor, save medicine, low cost and high prevention effect, but also overcome some high dosage of old dosage forms, killing natural enemies, contaminating the environment, Limitation by the climatic conditions and other shortcomings, expanding the scope of application. Three new formulations are now introduced: First, the aerosol agent. Aerosol is the use of chemical heating agent to produce high temperature, the chemical stability of pesticides gasification, and then condensation in the air into particles, evenly fall on the crop leaves positive and negative, while others directly on the leaves condensation. When spraying, put the medicine evenly on the back of the abdomen, then light. This method is especially suitable for greenhouse cucumber. Cucumber downy mildew, powdery mildew and anthrax have significant control effect. Aerosol does not require medical equipment, labor, medicine, safety, but also reduce the labor intensity, control of acre only 10 minutes. Compared with the spray, the field humidity is small, thus reducing the occurrence of gray mold disease, anthracnose and bacterial angular leaf disease, the economic benefits are obvious.