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1 The application of phosphate fertilizer in wheat is a must, but it does not need to be overdone. Empirical data show that the use of 15% to 20% ternary compound fertilizer containing 40 to 50 kg of pure phosphorus as the base fertilizer will generally not lead to phosphorus deficiency. 2 Partial application of phosphorus caused soil compaction, certain trace elements were fixed, and deficiency of the disease occurred. Because phosphorus, which cannot be absorbed by wheat, is concentrated in the soil, its phosphate ions combine with the cations of calcium, magnesium and other trace elements in the soil to form insoluble phosphates, which wastes phosphate fertilizer and destroys the soil aggregate structure. Soil compaction. Therefore, do not apply phosphate fertilizer (such as diammonium phosphate) to the base fertilizer. 3When applying phosphate fertilizer, the compound compound fertilizer with higher phosphorus content is selected on the base fertilizer, and when diammonium and low-nitrogen and high-phosphorus compound fertilizer are used on a single application of phosphorus at the bottom, only 30 to 40 kg is used in addition to the amount of mu. , also increase the urea 10 kilograms per acre, to prevent straw rot and seedlings fight nitrogen causing yellow phenomenon. 5 Since 2008, the price of potash has soared, resulting in less and less potassium for agricultural production. This situation has been going on for nearly four years, and in the past two years, the lodging situation of summer maize and winter wheat in North China has increased. This shows to a certain extent that potassium supplementation is of utmost importance. 6 Returning straw can provide partial potassium fertilizer. If the base fertilizer is made of 40-50 kilograms of ternary compound fertilizer, there is no need to choose fertilizer formulas with particularly high potassium content. 7 It is recommended to use high-nitrogen and high-phosphorus potassium compound compound fertilizer with potassium content of about 7% as base fertilizer, with dosage of 40~50 kg/mu. After returning to youth in the year, choose nitrogen-potassium binary compound fertilizer with potassium content of 5%-10% as top dressing, with dosage of 20-30 kg/mu. Potassium fertilizer applied twice can also increase the utilization of potash fertilizer to ensure resistance to lodging and high yield.