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以板栗树为例，介绍和分析了合理施用农药的方法，即尽量不用农药，而采取生物、人工和物理防治；设法减少农药用量和掌握用药技巧。
Taking chestnut tree as an example, this paper introduced and analyzed the method of pesticide application reasonably, that is, to take biological, artificial and physical control as far as possible without pesticide; try to reduce the dosage of pesticide and master the medication skill.