In the past few years, rural communities circulated a word: “On the second policy, relying on days, the increase in grain production depends on diammonium.†With the increase in grain yield, soil potassium deficiency has been shown, and now farmers are more selective ternary compound fertilizer. . Three major trends in the development of compound fertilizers: The first is the specialization of multiple varieties. Different crops have different special fertilizers. Special fertilizers are developed and produced according to the laws of crop growth and development and fertilizer intake. When farmers use compound fertilizers, they should pick up specific fertilizers for different crops. If you do not use it, you will be in violation of the rule of applying fertilizer to crops, and the potential for increasing crop yields will not be realized. At the same time, some nutrients will be wasted. The second is multi-functional drug use. Combining pesticides and chemical fertilizers together eliminates the need for seed dressing procedures. Once applied, it can ensure nutrients needed for crops and control underground pests. The third is long-term high concentration. With the development of agricultural production, high-concentration long-acting compound fertilizers are becoming more and more popular among farmers. The application of this type of fertilizer has reduced the amount of fertilizing, facilitated cultivation, eliminated the top-dressing link, reduced labor, and improved fertilizer utilization. , Provincial workers, labor-saving, time-saving, improve quality and efficiency. How to choose compound fertilizer? Look at the packaging. Qualified product double packaging, moisture proof. There are three serial numbers on the outside of the packaging: the production license number, business license number, and product quality registration number. There are nitrogen, phosphorus, and potassium three major nutrient element identifications, and there are manufacturers and addresses. Open the outer package, there should be a product manual in the bag. Second, look at the physical properties of compound fertilizers. The compound fertilizer with good product quality has uniform particle size, no agglomeration and no crushed powder. Third, the purchase of regular manufacturers of production equipment and production technology are more advanced, the product produced uniform particles, nutrient balance, quality and stability, the product is by the experts for soil nutrient status and crop fertilizer characteristics, developed after a long-term test, Formula is scientific and reasonable, targeted, nutrient-rich, content is sufficient. Fourth, local compound fertilizers should be selected. The locally produced compound fertilizers are mostly based on the nutrient content of the soil in the area and the surrounding areas, the fertilizer requirements of the crops, and the fertilizer effects. Some farmers blindly purchase compound fertilizers that are not suitable for local application. This not only affects the growth and development of the crops, but also causes the waste of individual nutrients and also affects the yield. Five bogey years of use of "double chlorine" compound fertilizer. The “Dual Chlorine†compound fertilizer is a compound fertilizer produced with ammonium chloride and potassium chloride as raw materials, with a high chloride ion content. Chloride ions are the trace elements needed for growth and growth. The proper amount can promote the growth of the effect. Excess can cause fertilizer damage. If the "double chlorine" compound fertilizer is applied year after year, the retention of chloride ions in the soil is large, and excessive absorption will cause "chlorine harm", and the soil will also cause "salt damage." Compound fertilizer is generally used as base fertilizer. The application of the basic treatment method before planting at the time of sowing was applied by the first line of fertilizer, and the second line of the fertilizer was the deep side fertilization application. At present, it is best to look at compound fertilizers and animal husbandry for long-term compound fertilizers. The lateral depth of the plant is generally 5-7 cm deeper than the fertilization. Deep side-applied isolation of seed fertilizers to avoid burning seedlings.
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