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Second, we must purchase fertilizer based on soil fertility. Advocating soil testing and formula fertilization, we must first grasp the soil types, nitrogen, phosphorus and potassium content, organic matter content of our own land, and adapt to local conditions, to make up for the lack of sputum, how much to make up, scientific and rational use of fertilizer. Reduce investment, reduce pollution, and improve the quality of agricultural products.
Third, we must purchase fertilizer according to the rules of different crops. The types and quantities of fertilizers required for growth and development of corn, soybeans, rice, vegetables, melons, etc. are different and cannot be uniform.
Fourth, you must go to the regular manufacturers and distribution units to buy fertilizer. When farmers buy salt fertilizers, they must go to the manufacturers and distribution units with good reputation and complete licenses to purchase fertilizers. To leave a receipt and related ticket when purchasing fertilizer, you can make a voucher claim in case of problems.
Fifth, you must purchase the product logo and the three-certified fertilizer. When purchasing fertilizer, it is necessary to see whether the product identification is complete and the “three certificates†(production license, production standard certificate and fertilizer promotion certificate) are complete. After purchase, you must ask for the purchase certificate and credit card.
Sixth, we must prevent misleading false advertising. Part of compound fertilizer, compound fertilizer, organic and inorganic fertilizer, multi-element compound fertilizer, organic biological fertilizer, etc., its advertising often exaggerates the role and effect, in the process of purchase and use, beware of being fooled.
Seven must consult with agricultural technicians before purchasing fertilizer. When you encounter a problem, you can consult with agricultural technicians and fertilizer experts. Ask them to help you as a staff member, take the idea, and don't blindly buy fat.
Look at the outer packaging. The outer packaging is a woven bag, the inner packaging is a plastic bag, the packaging bag is machine-stitched, and the seams should be neat and uniform.
Look at the logo. The national regulations shall mark the trademark, the name of the fertilizer, the manufacturer, the content of the fertilizer component, the net weight of the product and the standard code on the packaging bag.
Look at the color. The fertilizer has good luster, uniform color, bright color, and is dull and inferior.
Look at the shape. Uniform grain shape, no powder, loose and dry, no sticky hands, no agglomeration.
Look at the hardness. The palm of your hand is put on the fertilizer, and it is twisted twice, and it is not broken, it is not bad.
Look at water solubility. Take a small amount of nitrogen fertilizer and potassium fertilizer and stir it in water for 5 minutes. It can be completely dissolved to be excellent, and it cannot be completely dissolved. Diammonium phosphate can be dissolved in water, but the dissolution time is longer.
First, we must understand the types and characteristics of fertilizers on the market. Nowadays, the fertilizer is no longer the oldest in the past (urea, diammonium, potash). In recent years, many compound fertilizers, special fertilizers and formula fertilizers have been added to the market. First of all, we need to understand the content and function of nitrogen, phosphorus, potassium and trace elements of various fertilizers, and then choose the variety and quantity of fertilizer according to their actual needs.
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