Crop equilibration nourishment protecting agent

The invention discloses a nutrition-balanced protective agent of crops, which is generated mainly by raw materials in the following portions by weight: 0.5-2.5 portions of amino acid, 0.5-2.5 portions of potassium dihydrogen phosphate, 0.5-2.0 portions of carbamide, 1.5-3.0 portions of trace elements, 2-5 portions of lipid film and 200-1000 portions of water. In order to achieve much better effect, the protective agent of the invention is combined with disinsection and sterilization components such as avermectin or cypermethrin, etc., as well. The protective agent has balanced and comprehensive nutrition, high fertilizer effect, good protective property, safe application, low cost and convenient application; the invention has double effects of nutrition and protection and is easy to be absorbed by crops, and has unique effects especially on improving crop photosynthesis, strengthening crop stress resistance, guaranteeing blossoms to bear fruit, expanding fruit, improving the color, polish and plumpness of the fruit, improving quality, developing marketability, etc.