目前,生产上使用的农药剂型较多,有乳剂、粉剂、乳粉、颗粒剂、烟剂等。但不少农民由于对农药剂型特点缺乏了解,使用方法千篇一律,结果往往防效很低,甚至产生药害,造成不必要的经济损失。因此,农药的使用一定要根据不同剂型特点,合理施用,才能达到预期的效果。 1、乳剂。又名乳油,是用农药原药乳化剂和有机溶剂制成的透明油状液体制剂,如40％乐果、80％敌敌畏乳剂等。兑水后成为均匀、稳定的乳状液,可供喷雾、涂抹茎叶、泼浇、拌种、浸种和土壤处理等。这类农药的湿润展布性好,药效期较长,防效也优于同种农药的其它剂型。如使用不当 At present, there are more pesticide formulations used in production, such as emulsions, powders, milk powders, granules, smoke and the like. However, due to the lack of understanding of the characteristics of pesticide formulations, many peasants use stereotyped methods and the results tend to be very low in anti-efficacy and even cause phytotoxicity, resulting in unnecessary economic losses. Therefore, the use of pesticides must be based on the characteristics of different formulations, rational application, in order to achieve the desired results. 1, emulsion. Also known as EC, is a transparent oily liquid formulation made with the original pesticide emulsifier and organic solvent, such as 40% dimethoate, 80% DDVP. After watered into a uniform, stable emulsion for spray, smear stems and leaves, pouring, dressing, soaking and soil treatment. The wet spread of these pesticides is good, longer duration, control effect is also better than other pesticides with the same dosage form. If used improperly