科学施用蔬菜微肥正确施用微肥，是促进蔬菜优质丰产的措施之一。但蔬菜对微量元素需要量极少，施用微肥过量，就会对蔬菜产生毒害作用，给生产造成损失。蔬菜生产上常用微肥的安全用量是：１．硫酸亚铁：土壤施用量每亩１～３．７５公斤，植株叶面喷洒浓度０．２～１．０... Scientific application of micronutrients in the proper application of trace fertilizers is one of the measures to promote high quality vegetables. However, the demand of trace elements in vegetables is very small, the use of excessive micronutrients, it will have a toxic effect on vegetables, resulting in loss of production. The safe usage of the commonly used micronutrients in vegetable production is: 1. Ferrous sulfate: soil application rate of 1 ~ 3.75 kg per acre, plant foliar spray concentration 0.2 ~ 1.0 ...