A crop of flowers depends entirely on fertilizers. That is to say, scientific fertilization is the key to high crop yields under the same conditions of climate, material conditions, and management, and scientific fertilization should pay attention to the following aspects: 1. Soil fertilization: Sandy soil has strong fertility, and it is not easy to fertilize with poor fertility. The clay soil is just the opposite. The two soils are between the two. Therefore, sand soil fertilization to take a small amount of time the principle of the upcoming required fertilizer divided application, can not be ignored light fertilizer, clay soil can be used to make heavy base fertilizer, light fertilizer topdressing method, the two combined soil should be chasing and weight. 2. Because of crop fertilization: Fertilization is based on the characteristics of crops, such as legumes (soybeans, peanuts, etc.) tomatoes, rape and other phosphorus crops must ensure the supply of phosphorus to ensure production; tobacco, potato, watermelon, oil is a joy Potassium crops should pay attention to the application of potassium fertilizer. Secondly, it should be based on the amount of fertilizer needed for crops at different stages of fertility. If the crop needs less fertilizer at the seedling stage and enters the period of pregnancy resistance or flowering, the amount of fertilizer needed to increase rapidly should be considered top dressing. 3. Fertilizer application: Fertilizers can be fertilized according to the characteristics of the fertilizer and its characteristics in the soil. For example, potash fertilizer and nitrogen fertilizer should be applied to the soil layer below 10 cm. The ammonium bicarbonate should be applied deeply and covered in time; neutral and alkaline soils. Layers of calcium, magnesium, and phosphorus can be applied, and more concentrated application of superphosphate and ammonium phosphate can reduce the fixation of phosphorus to increase fertilizer efficiency. When urea is used as top dressing, it should be avoided before applying watering or reducing heavy rain to reduce the loss. 4. Fertilizer application: Any single use of fertilizer can not meet the needs of the crop, only the fertilizer with different nutrients can achieve the desired purpose. Based on the above conditions, the following fertilizer recommendations are proposed: Organic fertilizer, phosphate fertilizer, potash fertilizer, and some nitrogen fertilizers are applied as base fertilizers at one time, and the remaining nitrogen fertilizers are used as top dressings. During the top-dressing period, wheat should be chased after standing up; corn (generally only nitrogen fertilizer is not applied). ) Should be applied in 30 days and 45 days after sowing with 30-40% of fertilizer and 70-60% (depending on the soil quality). Peanut and soybean should be sprayed on the leaves for two weeks. Peanut Fertilizer No.2 and Soybean Fertilizer No.2. If it is not available locally, it is also possible to use "monopotassium phosphate dihydrogen" urea mixed spray to promote the formation of rhizobia. It should be noted that any technology is not rigid, such as: today's formula fertilizer is a scientific carrier of fertilization technology, the effect of increasing production is very obvious, but if the soil applied to nutrient imbalance can not achieve the desired purpose, The applicators will be overly sensible, so the recommendations described above are general and should be specific to individual situations (such as unsuitable wheat crops in western Henan).