“丰收牌”微肥复合晶系列产品,由安徽省汪洋微肥应用技术协作研究所研制,安徽省岳西县撞钟化肥厂生产,1989年5月通过国家级技术鉴定和产品登记。据资料介绍,截止1990年底,由近70个科研院校在23个省市自治区30多种作物上完成244项试验,均证明应用效果良好。1989年,我区开始在果树上引入小试,通过试验、示范,现已进入全区推广应用阶段。一、试验示范效果的评价 1989年我所引入“丰收牌”微肥复合晶3号,在万县地区农科所果园进行试验,1990年又在云阳县宝坪果园扩大试验,均证实应用效果明显,尤在树势中等的柑桔树上施用,效果优于2,4—D等常用植物激素。1991年我所以协作形 “Harvest harvest card” micro-fertilizer composite crystal products, from Anhui Province Wang Yang Microfine Application Technology Research Institute developed in Anhui Province Yuexi County hit bell Chemical Fertilizer Plant, in May 1989 through the national technical appraisal and product registration. According to the information, by the end of 1990, 244 experiments were completed on nearly 30 kinds of crops in 23 provinces, municipalities and autonomous regions by nearly 70 scientific research institutes, all of which proved that the application effect was good. In 1989, our district began to introduce small test on fruit trees, passed the test and demonstration, and now it has entered the promotion and application stage of the whole district. First, the evaluation of experimental demonstration effect In 1989 I introduced the “Harvest card” Micro-fertilizer Complex 3, in the County Agricultural Science Institute orchard experiment, in 1990 and again in Yunyang County, orchard Pingguo test, confirmed the application The effect is obvious, especially in citrus tree medium tree, the effect is better than 2,4-D and other commonly used plant hormones. In 1991, I collaborated