First, topdressing wax fertilizer: late sowing wheat cold resistance is weak, vulnerable to low temperature damage, chase application of wax fertilizer can use organic manure-based farm fertilizer to release heat to keep warm and cold, conditional application of fertilizer or soil per mu Mixed fertilizer 1500 ~ 2000 kg, spread between wheat seedlings line, or apply urea 8 ~ 10 kg per acre, in addition to the supply of wheat seedlings a small amount of winter growth, but also play a role in winter Shi Chun, promote long-rooted wheat, Early return to green, consolidation of pre-winter delivery, and promotion of spring delivery. Basal fertilizer can be adequately used to reduce the amount of wax fertilizer, to prevent late ineffective childbirth, the group is too large, resulting in long-distance between the internode and cause late lodging, unfavorable high-yield, stable production.
Second, the clever application of green manure: late sowing of wheat effective tiller occurrence than the appropriate time sowing 15 to 30 days, the appropriate amount of application of green manure is conducive to fighting for early spring tiller into a panicle. Therefore, for late-batch wheat fields with insufficient delivery, green manure can be applied from the end of February to the beginning of March, so that it can be used for wheat. Per acre can apply urea 3 ~ 5 kg or ammonium bicarbonate 10 ~ 15 kg, can also apply human urine water and fertilizer 500 ~ 750 kg. For wheat fields with severe defertilization and wheat seedlings with severe freezing injury, 15 kg of ammonium bicarbonate per mu or 100-150 ml of Huimanfeng Active Liquid Fertilizer can be sprayed on 40-50 kg of water. Phosphorus-deficient wheat fields are supplemented with 10-15 kg of superphosphate per acre. For wheat fields with fertile soil or at the end of the fertile feet, when the temperature is high and the sensation is full, early observations of late sown wheat are found. After spring, the application of topdressing should be controlled to prevent lodging at later stages.
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