Increase organic fertilizers to increase chemical fertilizer efficiency. The use of chemical fertilizers and organic fertilizers is more effective than single fertilizer application. Normally, the yield of wheat per kilogram of pure nitrogen is at least 2-3 kilograms. Although there are also many high-yield wheat fields that use only chemical fertilizers, due to the excessive use of chemical fertilizers, the economic efficiency is low, and the soil is liable to create soil. Compaction, deterioration of physical and chemical properties. Only adding organic fertilizer, accelerating fertilizing the soil and applying the same amount of fertilizer can increase the wheat output to more than 400 kg, which is actually a multiplier.
Ping Shi formula fertilization. Nitrogen, phosphorus, and potassium must be used in conjunction with the application of phosphorus and potassium fertilizers on the basis of stable application of nitrogen fertilizers. Rational balance of fertilization, so that top dressing, basal fertilizer appropriate, according to the different soil soil to determine the base fertilizer, top dressing ratio. Generally, the proportion of wheat in the sandy loam soil and the light loam soil is 3:7, and 4:6 in the middle loam soil and heavy loam, and 5:5 in the light-duty and heavy-duty wheat. At the same time pay attention to the application of various trace elements.
According to different production levels, determine the best fertilization method. In the middle and low-yield wheat fields, a simple fertilization method (commonly known as a shelling) can be used to make enough base fertilizer. For high-yield wheat fields, the average value (R value) of the average index is far greater than that of medium and low yield wheat fields, indicating that the high-yield wheat fields should emphasize fertilization techniques. The earlier the middle and low-yielding farmland, the better the effect of topdressing, and the best fertilizer time for high-yield wheat field is the jointing period. High-yielding wheat fields generally do not chase back green manure, because the application of green manure will cause the group to be oversized and lodging. However, high-yield wheat fields should not be too much fertilizer, too late, to prevent late-maturing gluten affecting grain weight, generally less than 10 kilograms per acre topdressing urea, from the end of February to early March before the end of March.
Foliar spray fertilizer effect is good. Fertilizer spraying on wheat leaves is also a method of economical fertilization. The foliar spraying can be carried out at the booting stage of wheat, and 150 g of urea and 150 g of potassium dihydrogen phosphate per acre are mixed with 60 kg of water per acre in a sunny and windless afternoon.
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