使用浓度用液剂喷雾时往往需用水将药剂配成或稀释成适当的浓度,浓度过高会造成药剂浪费,浓度过低则无效。有些非可湿性的或难于湿润的粉剂,应先加水少许,将药粉调成糊状,然后再加水配制,也可以在配制时添加一些湿润剂。喷药时间喷药的时间过早会造成浪费或降低防效,过迟则大量病原物已经侵入寄主,即使喷内吸治疗剂也收效不大。应根据发病规律和当时 The use of concentration of the liquid spray often require water to dilute the drug into the appropriate concentration, the concentration is too high will result in waste agents, the concentration is too low is invalid. Some non-wettable or difficult to wet powder, you should add a little water, the powder transferred into a paste, and then add water to prepare, you can also add some wetting agents in the preparation. Spraying time spraying prematurely will result in waste or reduce control effect, too late a large number of pathogens have invaded the host, even if the spray absorption of the therapeutic effect is also not effective. Should be based on the incidence of the law and at the time