Pay attention to the recognition of inferiority. Where qualified chemical fertilizers are produced by regular manufacturers, their packaging bags are usually marked with the product name, nutrient content, net weight, and origin.
Pay attention to price changes. Now there are many stocks of nitrogen fertilizers, etc., pay attention to seize the low reserve fertilizer and save costs.
Pay attention to buy a good variety. False deteriorating fertilizers are generally based on compound fertilizers (such as diammonium phosphate, etc.), urea, superphosphate, liquid fertilizers, and foliar fertilizers. According to the winter gas and the application method, it is necessary to choose suitable broadcast varieties to ensure the application effect.
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