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Several Considerations for Using Compound Fertilizers (1)
Some points for attention when using compound fertilizers (1) Compound fertilizers have the advantages of high nutrient content, fewer accessory components, and good physical properties, which play an important role in balancing fertilization, improving fertilizer utilization, and promoting high and stable yields of crops. However, it also has some shortcomings. For example, its nutrient ratio is always fixed, and the types, quantities, and proportions of nutrients needed for different soils and different crops are varied. Therefore, before the use of the best soil testing, understand the texture and nutritional status of field soil, but also pay attention to the application of fertilizer and unit, in order to get better results. With the increase of grain yield, the phenomenon of soil nutrient deficiency has already been demonstrated. Now farmers have begun to use more multiple compound fertilizers. At present, the development of compound fertilizer has three major trends: 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 the amount of fertilizers. When farmers first use compound fertilizers, they must select the appropriate special fertilizer according to different crops. If it is not dedicated, it violates the rules of crop absorption, so that the crop's potential for yield increase cannot be realized, and at the same time, some nutrients are wasted. The second is multi-functional drug use. Combining pesticides and chemical fertilizers together eliminates the need for pesticide seed dressing procedures. Once applied, it can ensure nutrients needed by crops and prevent and control underground pests and seedling diseases, which can have multiple effects. 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 increased fertilizer use. Rate, labor saving, labor saving, time saving, improve quality and efficiency. 1, with the application of a variety of fertilizers. Although most of the compound fertilizers are now diverse, they still cannot fully replace organic fertilizers. Wherever possible, the amount of decomposed organic fertilizers should be increased. Combined application of compound fertilizer and organic fertilizer can increase fertilizer efficiency and utilization of nutrients. The application of organic fertilizer not only improves the soil, activates beneficial microorganisms in the soil, but also more importantly saves energy and reduces environmental pollution. The use of some bio-organic fertilizers can not only avoid the cumbersome process of traditional organic fertilizer production, but also provide a lot of beneficial microorganisms for the soil, activate soil nutrients and reduce continuous cropping obstacles. Although some special compound fertilizers determine suitable nutrient ratios based on the characteristics of the crop's fertilizer requirements and the nutrient characteristics of the soil, it is difficult to fully meet the requirements for actual growth of crops on soils with different fertility levels. Therefore, it is necessary to consider the actual crops. Growth conditions, coupled with the use of some simple fertilizer. For example, in nitrogen-deficient soils, some nitrogenous fertilizers are needed for leafy vegetables that require more nitrogen. For potassium-deficient soils, some potassium fertilizers are used for later-stage watermelons that require more potassium.