“802”系湖北天门化肥厂生产的一种新型植物生长调节剂,该产品为茶褐色液体,溶于水,呈中性,对环境无污染,对人畜无毒害。1986年我县不少地方自发引进使用,对水稻生产起到了一定的增产效果。为了验证这一效果与更好地应用它,笔者于1987年在东方红乡舒家村二晚田内对不同浓度、不同喷施时间和不同喷施时期的增产作用进行了探讨,现将结果简述如下: “802” is a new plant growth regulator produced by Tianmen Fertilizer Plant in Hubei Province. The product is a brown liquid, soluble in water, neutral, pollution-free to the environment and non-toxic to humans and animals. In 1986, many places in our county were introduced spontaneously and played a certain yield-increasing effect on rice production. In order to verify this effect and to better use it, the author in 1987, Shu Hongcun, Dongxianghongxiang two nights of different concentrations, different spraying time and different spraying period of increasing the role of production are discussed, the results briefly as follows: