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根外施肥是将肥料配成一定浓度的水溶液，直接喷在作物的叶片上，由叶片吸收供给作物生长发育所需要的养料。根外施肥是一种经济速效的施肥方法，可弥补不良环境条件下和作物生长发育后期，根系吸收养料的不足，是土壤施肥的补充。微肥多采用根外追肥的办法施用。根外施肥在蔬
Root fertilization is the fertilizer dubbed a certain concentration of aqueous solution, sprayed directly on the leaves of crops, the leaves absorb the nutrients needed for crop growth and development. Fertilization on the outside of the root is an economical and effective method of fertilization, which can make up for the deficiencies of nutrient absorption in the root system under adverse environmental conditions and crop growth and development and is a supplement to soil fertilization. Micro-fertilizer and more use of root top dressing methods of application. Root fertilization in the vegetables