Now it is time for farmers to plow in spring, and agricultural products have become hot commodities in the market. In order to ensure the quality of cultivation, farmers often choose fertilizers and pesticides after they are cultivated. The quality of chemical fertilizers and pesticides has become a topic of concern to all. How do you select quality chemical fertilizers and how do you use pesticides correctly? The reporter asked the industrial and commercial staff to support the peasant consumers. According to reports, there are three methods that can be used to identify genuine and fake fertilizers. One is the packaging identification method. 1. Check mark: According to the regulations of the relevant state departments, the name of the product, nutrient content, grade, trademark, net weight, standard code, factory name, site, and production license number must be indicated on the chemical fertilizer packaging bag. If the above signs or signs are not complete, it may be counterfeit or inferior fertilizer. 2. Check the sealing of the bag: Special attention should be paid to the chemical fertilizer with obvious sealing and unsealing marks. This phenomenon may be caused by adulteration. The second is the shape and color identification method. 1, urea is white or light yellow, was granular, acicular or prismatic crystals, no powder or little powder; 2, ammonium sulfate is white crystals; 3, ammonium chloride is white or light yellow crystals; 4, carbonate Ammonium hydroxide is white or other colored powder or granular crystals. Some manufacturers also produce large particles of spheroidal ammonium bicarbonate; 5, superphosphate is gray or light gray powder; 6, heavy superphosphate is dark gray, grayish white particles or powder; 7, potassium sulfate is white crystals or powder; Potassium chloride is white or light red particles. The third is odor identification. If there is a strong pungent ammonia flavor of the liquid is ammonia; obvious pungent ammonia flavor particles are ammonium bicarbonate; fine sour powder is heavy superphosphate. If superphosphate has a very pungent sour taste, it is very likely that spent sulfuric acid is used in the production process. This fertilizer is very toxic and can easily damage or burn crops, especially in rice ponds. What needs to be reminded is that although some chemical fertilizers are true but their contents are very low, such as inferior superphosphate, the effective phosphorus content is less than 8% (the minimum standard should reach 12%). These fertilizers are inferior chemical fertilizers with little fertilizer effect. Professional certification should be requested. The use of pesticides should comply with the pesticide anti-virus regulations, the correct dispensing, application of pesticides, waste disposal and safety protection work to prevent pollution of the environment and pesticide poisoning. Poisonous, highly toxic pesticides must not be used for vegetables, fruits, tea, Chinese herbal medicines, and control of sanitary pests. It is forbidden to use pesticides to poison fish, shrimp, birds, beasts, etc.
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