Spraying foliar fertilizer on wheat is an effective measure to increase production. In order to improve the efficiency of spraying fertilizer, the following four principles must be mastered:
1. The time for spraying fertilizer should be appropriate. According to the experiment, the spraying of wheat from the booting stage to the heading stage can significantly extend the functional period of the leaves and increase the grain yield, which is a high-efficiency period of spray fertilizer. In addition, due to the high temperature at noon on sunny days, large evaporation, and low fertilizer utilization rate, it is best to spray fertilizer at 9-11 o'clock and 2 o'clock in the afternoon on a cloudy day or sunny day. spray.
2. The type and concentration of fertilizer should be determined by the seedlings. Phosphorus and potassium in potassium dihydrogen phosphate and plant ash can promote the synthesis and operation of wheat nutrients, accelerate grain filling and enhance plant lodging resistance; urea can improve grain quality and prevent premature aging. Therefore, it is best to spray 0.3% potassium dihydrogen phosphate on a large area of ​​normal or high-yielding wheat, add 1%-2% urea solution to yellow thin and weak seedlings, or dilute with double water in decomposed urine.
After spraying, the leaves and the sheaths were purple-red phosphorus seedlings, and sprayed with 2%-3% superphosphate leaching solution. Spray the 10% ash leaching solution on the leaves and the densely growing Miao Miao.
3, the spray fertilizer method should be appropriate. The fertilizer must be sprayed on the leaves or green stalks and wheat ears to function. At the same time, the wheat leaves have a lot of pores on the front and back, and should be sprayed with fertilizer. To spray evenly, the finer the droplets, the better. For wheat fields with heavy de-fertilization and poor grievances, or dry hot winds during the spraying period, increase the number of spraying fertilizers as appropriate.
4. Others. In the wheat field where pests and diseases occur, an appropriate amount of pesticides can be added to the fertilizer solution. However, potassium dihydrogen phosphate should not be mixed with alkaline pesticides such as stone sulfur mixture, Bordeaux mixture, etc., in order to avoid reaction and reduce fertilizer efficiency and efficacy.
1. The time for spraying fertilizer should be appropriate. According to the experiment, the spraying of wheat from the booting stage to the heading stage can significantly extend the functional period of the leaves and increase the grain yield, which is a high-efficiency period of spray fertilizer. In addition, due to the high temperature at noon on sunny days, large evaporation, and low fertilizer utilization rate, it is best to spray fertilizer at 9-11 o'clock and 2 o'clock in the afternoon on a cloudy day or sunny day. spray.
2. The type and concentration of fertilizer should be determined by the seedlings. Phosphorus and potassium in potassium dihydrogen phosphate and plant ash can promote the synthesis and operation of wheat nutrients, accelerate grain filling and enhance plant lodging resistance; urea can improve grain quality and prevent premature aging. Therefore, it is best to spray 0.3% potassium dihydrogen phosphate on a large area of ​​normal or high-yielding wheat, add 1%-2% urea solution to yellow thin and weak seedlings, or dilute with double water in decomposed urine.
After spraying, the leaves and the sheaths were purple-red phosphorus seedlings, and sprayed with 2%-3% superphosphate leaching solution. Spray the 10% ash leaching solution on the leaves and the densely growing Miao Miao.
3, the spray fertilizer method should be appropriate. The fertilizer must be sprayed on the leaves or green stalks and wheat ears to function. At the same time, the wheat leaves have a lot of pores on the front and back, and should be sprayed with fertilizer. To spray evenly, the finer the droplets, the better. For wheat fields with heavy de-fertilization and poor grievances, or dry hot winds during the spraying period, increase the number of spraying fertilizers as appropriate.
4. Others. In the wheat field where pests and diseases occur, an appropriate amount of pesticides can be added to the fertilizer solution. However, potassium dihydrogen phosphate should not be mixed with alkaline pesticides such as stone sulfur mixture, Bordeaux mixture, etc., in order to avoid reaction and reduce fertilizer efficiency and efficacy.
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