购买农药时,不仅需要鉴定农药质量的优劣即看其有效成分含量、乳化性能、溶解性、含水量、粉粒大小、沸点、比重和耐酸、耐碱性等,而且还需要确保多种类的药剂,即粉剂、可湿性粉剂、乳剂、水溶剂、颗粒剂、烟剂和熏蒸剂等。那么,如何选购优质、不同类型的农药呢? When buying pesticides, not only the quality of pesticides need to identify the pros and cons of pesticide content that its effective content, emulsifying properties, solubility, water content, particle size, boiling point, specific gravity and acid, alkali and so on, but also need to ensure that many kinds Agents, ie powders, wettable powders, emulsions, aqueous solvents, granules, smoke and fumigants and the like. So, how to buy high quality, different types of pesticides?