农药合理混用是一项技术性很强的工作,并非所有的农药都能混用,它有具体的操作要求,否则会造成药效降低甚至造成药害。农药混用应遵循如下几个原则。1.混用的农药不能起化学反应目前常见的有机磷类、氨基甲酸酯类、拟除虫菊酯类杀虫剂,会在碱性介质中水解而失效。因此,这类农药,不能与碱性农药或碱性物质混合使用。如乐果、代森锌、福美双、杀螟松等农 Reasonable mixing of pesticides is a highly technical work, not all pesticides can be mixed, it has specific operational requirements, otherwise it will result in lower efficacy or even cause injury. Mixed pesticides should follow the following principles. 1. Mixture of pesticides can not play a chemical reaction Currently common organic phosphorus, carbamates, pyrethroid insecticides, hydrolysis in alkaline medium and failure. Therefore, these pesticides, can not be mixed with alkaline pesticides or alkaline substances. Such as dimethoate, dexamethasone, thiram, fenitrothion and other agricultural