In order to promote high yield, high quality, high efficiency and resource conservation of wheat, according to the fertilizer requirement of different types of wheat and soil fertility in wheat field, based on the application of organic fertilizer, rational application of chemical fertilizer, improve fertilizer utilization and reduce soil pollution. In general, high-yield fields control nitrogen, stabilize phosphorus, increase potassium, supplement micro, and stabilize the nitrogen, increase phosphorus, and apply potassium fertilizer in the middle field.
Fertilization technology points:
1, high and medium wheat fields
The high-yielding wheat field has a high level of soil fertility and good production conditions. The annual input of nitrogen fertilizer is too large, but the input of potassium fertilizer is relatively insufficient. In the fertilization, it is necessary to increase the input of organic fertilizer, and fully implement the straw returning to the field. According to the principle of controlling nitrogen and stabilizing phosphorus and increasing potassium, the high-yield wheat field (500kg/mu or more) is applied with organic fertilizer 4 square meters and pure nitrogen (N) 14 -17kg, phosphorus (P2O5) 8-10kg, potassium (K2O) 8-10kg; fertilization method on the phosphate fertilizer once applied, nitrogen fertilizer 30% bottom application, 60% jointing stage, 10% in wheat booting stage, potassium fertilizer 70% of the bottom, 30% joint season. In the middle-age wheat field, the application of organic fertilizer is 3.5 square meters, pure nitrogen (N) 12-15kg, phosphorus (P2O5) 7-8kg, potassium (K2O) 5-8kg; fertilization method is applied to 40% of nitrogen fertilizer and 60% jointing stage. Potassium fertilizer 70% bottom application, 30% jointing stage, phosphorus fertilizer once applied. The application of micro-fertilizer can be carried out with zinc sulfate or manganese sulfate, and the fertilizer is 2-4 g per kg of seed. Spray potassium dihydrogen phosphate in the middle and late stages of wheat growth to increase the 1000-grain weight of wheat.
2, late wheat field
The late-sown wheat field is late in the evening, the planting is delayed, and the accumulated temperature before winter is insufficient. It is necessary to promote the seedlings with heavy fertilizer to achieve the purpose of pre-winter seedlings and rapid transformation in spring. High-yield field application of organic fertilizer more than 3 square meters, pure nitrogen (N) 14-15kg, potassium (K2O) 6-7kg, phosphorus (P2O5) 8-9kg; middle-age crops apply more than 3 organic fertilizers, pure nitrogen (N)12- 14kg, phosphorus (P2O5) 6-7kg, potassium (K2O) 5-6kg. Fertilization method is 40%-50% nitrogen fertilizer, bottom application, 60%-50% jointing stage application, phosphorus and potassium fertilizer should be applied at one time. Spraying multiple micro-fertilizers on the targeted foliar surface in the middle and late stages. In addition, due to the large consumption of potassium in the wheat-cotton intercropping area, the amount of potassium fertilizer can be appropriately increased.
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