The correct use of pesticides, not only can give full play to the pesticide effect, but also can avoid or reduce the destruction of beneficial organisms, crop injury and pesticide residue. Pesticide types and dosage forms, using different methods. Such as wettable powder can not be used for dusting, dust agent may not be used for spray, stomach poisons can not be used to smear, Systemics generally should not be made baits. Application to ensure quality, do fine spray; the use of smoke agent must be shed outdoor closed; application of dust must avoid strong sunlight at noon. According to the weather condition, scientific, correct use of pesticides: should generally be in the absence of wind or breeze weather, pesticide application, at the same time attention to changes in temperature. Low temperatures, most organic phosphorus pesticide effect is poor; the temperature is too high, prone to injury. The majority of drug use should be avoided at noon. Wind and rain can make chemical erosion, reduce the effect, therefore the best use of Systemics, followed by the use of emulsion.

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