Rational choice of fertilizer for greenhouse vegetables

　　 In the fertilization of vegetables, NPK compound fertilizer, diammonium phosphate, urea, ammonium bicarbonate, potassium sulfate, and fertilization are generally used; vegetable special compound fertilizer and organic-inorganic compound fertilizer are actively selected. In order to enhance the activities of beneficial microbes in crop rhizomes, improve soil physical and chemical properties, and regulate crop nutrient balance, we recommend the use of auxiliary fertilizers such as amino acids, humic acid fertilizers, bio-organic compound fertilizers and microbial fertilizers, such as rhizobial fertilizers and phosphorus bacteria. Fertilizer, compound microbial fertilizer, etc. Meanwhile, the use is advocated slow / controlled fertilizer nitrification inhibitor, to prevent leaching, volatilization loss of fertilizer. Remind farmers to avoid using chlorine-containing fertilizers (such as ammonium chloride) or nitrate-nitrogen fertilizers (such as ammonium nitrate).