“九二○”是植物生长刺激素,对植物有很大的生长刺激作用,使植物发育加速,植株高大或早熟,可以防止生长停滞。“九二○”的作用随作物的种类、品种发育阶段,使用时的浓度、方法、季节的不同而有差异。因此,必须抓住农作物增产的关键时刻施用。“九二○”不能杀虫也不能代替肥料,必须全面贯彻“农业八字宪法”,才能充分发挥“九二○”的作用。 “920” is a plant growth-stimulating hormone that has a great stimulating effect on plants, accelerates the development of plants, and tall or precocious plants can prevent the growth from stagnating. The effect of “920” depends on the type of crop, the stage of development, the concentration at the time of use, the method and the season. Therefore, we must seize the critical moment of crop yield increase. “920” can not kill insects nor replace fertilizers. The “Eight Character Constitution of Agriculture” must be fully implemented so that “nine two ○ ○” can be brought into full play.