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当前,在果树生产上补充某些微量元素采用的方法有两种,一是土壤施肥,二是叶面喷施。由于土壤对某些营养元素的固定或流失等原因,土壤施用微量元素肥料效果往往不够显著,且用肥量较大,还有造成土壤污染的危险。叶面喷施微量元素肥料克服了土壤施肥的某些缺点,但叶片并非是吸收养分的主要器官,叶片吸收的养分由于移动性
At present, there are two ways to supplement some trace elements in the production of fruit trees. One is soil fertilization and the other is foliar application. Due to the fixation or loss of certain nutrient elements in soils, the application of trace element fertilizers in soils often is not significant enough, and the amount of fertilizer used is large, and the risk of soil pollution is caused. Foliar application of trace element fertilizer to overcome some of the shortcomings of soil fertilization, but leaves are not the main organs to absorb nutrients, nutrients absorbed by leaves due to mobility