The top dressing of wheat is a simple and effective measure to increase production, and the increase rate is generally above 10%. For the common wheat fields, the 3% nitrogen and phosphorus binary compound fertilizer or the nitrogen, phosphorus, and potassium ternary compound fertilizer can be used for foliar spraying in the wheat flowering stage and the early stage of grain filling. For the late-defermented or premature aging wheat fields, In the heading stage of wheat, in the early and middle stages of grouting, spraying with 2% urea solution once; for high-yielding wheat fields, in order to prevent lodging, wheat can be sprayed with 0.3% to 0.4% potassium dihydrogen phosphate solution for 2 to 3 times immediately after heading. can.
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