How to fertilize wheat?

1. Topdressing to protect the late-sown wheat seedlings. When the three leaves of the late-sown wheat seedlings are showing their tips, it is necessary to promote the formation of early fertilization, strive to ensure that the four leaves are not vacant, and protect the survival of the tillers. Therefore, fertilizers should be applied early to promote tillering, and 5 kilograms of urea should be applied per mu of wheat field after the seedlings are ready, and 800 times of new high-fat film should be sprayed in a timely manner to improve the utilization rate of the active ingredients of fertilizers.

2. Anti-freeze protection for seedlings Late-sown wheat has few overwintering leaves, secondary roots form an independent system, and is susceptible to frost damage. Apply wax fertilizer early. Before December 31, combined with weeding and loosening of soil and roots, apply about 50 tons of soil and fertilizer per mu of wheat field to protect the tillers.

3. Late-sowed wheat with central control and prevention of lodging will turn green quickly in spring and leaf out quickly if there is sufficient fertilizer and water. From the greening period to the elongation period of the basal internodes, use a wooden roller to gently press once to control tillering in spring and promote large tillers to grow into ears. The jointing fertilizer should be timely and appropriate, and a certain amount of phosphorus and potassium fertilizer should be applied. Apply urea per mu of wheat field. The amount cannot exceed 7.5kg.

4. Spray phosphorus to strengthen grains. Spraying phosphorus fertilizer on leaves can improve the seed setting rate of late-sown wheat. Spraying phosphorus to strengthen grains during the booting stage of wheat can strengthen the physiological functions of crops and improve the quality of pollination, fertilization and grain filling. , increase the thousand grain weight. At the same time, before and after heading, continuous spraying of potassium dihydrogen phosphate solution plus 800 times of new high-lipid membrane solution 2 to 3 times, with an interval of about 5 days each time, also has a good effect on increasing yield.