微肥的施用研究工作约在五十年代开始,大规模的推广施用是在七十年代中期。到目前为止,已推广施用的微肥中几乎全是硼肥和钼肥。所施用的作物以甘蓝型油莱和紫云英为主。施用方法以叶面喷施为主。亩施硼砂2～4两或硼酸1～2两,一般可以增产油菜籽2～4成,含油量提高6～8％;亩施钼酸铵5～10克,一般可增产紫云英鲜草1000斤以上,增产率10～30％,而且植株 Fertilizer application research work began about the fifties, large-scale promotion and application in the mid-seventies. To date, almost all of the micronutrients that have been promoted for application are boron and molybdenum fertilizers. The crops used were mainly Brassica oleracea and Zephyr. Spraying method to the main application. Mushi borax 2 ~ 4 two or boric acid 1 ~ 2 two, can generally increase rapeseed 2 to 4 percent, oil content increased 6 ~ 8%; Mushi ammonium molybdate 5 to 10 grams, generally increase the yield of milk vetch 1000 pounds or more, yield 10 to 30%, and plants