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如何合理地施肥小麦?(1)

[12月9日,2020年]

(1)高中产量小麦田海高产麦田具有高土壤肥力水平和良好的生产条件。年氮肥输入太大,但钾肥输入相对不足。在施肥中,应提高有机肥的输入,应充分实施秸秆返回该领域,并实施控制氮,稳定磷,增加钾和补充微生物的原理。对于高产麦田(超过500kg / mu),每亩施用4m3,纯氮(n)14-17千克,磷(p2O5)8-10kg,钾(K2O)8-10公斤。施肥方法:磷肥一次施用一次,氮肥在底部施用30%,60%,在一个小麦的启动阶段10%;钾肥在70%的底部施用在70%和30%的侧面。中产量麦田每亩施用3.5m3有机肥,纯氮(n)12-15千克,磷(P2O5)7-8千克,钾(K2O)5-8千克。施肥方法:底部施用40%的氮肥,在连接阶段60%追肥;钾肥70%在底部施加30%,在连接阶段30%的圆形化; phosphate fertilizer is applied at the same time. Micro-fertilizer application, you can choose to dress seeds with zinc sulfate or manganese sulfate, and use 2 to 4 grams of fertilizer per kilogram of seeds. Potassium dihydrogen phosphate was sprayed in the middle and late stages of wheat growth to increase the thousand-grain weight of wheat. (2) Sowing wheat fields in the evening. In the late sowing wheat field, due to the stubble and late sowing, the accumulated temperature before winter is insufficient, so heavy fertilizer is required to promote the seedlings to achieve the purpose of strong seedlings before winter and rapid transformation in spring. Apply organic fertilizer more than 3 m3 per mu for high-yield fields, pure nitrogen (N) 14-15 kg, potassium (K2O) 6-7 kg, phosphorus (P2O5) 8-9 kg; medium-yield fields use organic fertilizer more than 3 m3, pure nitrogen (N) 12-14 kg, phosphorus (P2O5) 6-7 kg, potassium (K2O) 5-6 kg. The fertilization method is 40%-50% nitrogen fertilizer applied at the bottom, 50%-60% topdressing at the jointing stage, and phosphorus and potassium fertilizer applied at the same time. Targeted foliar spraying of multiple micro-fertilizers in the middle and late stages. In addition, in the wheat-cotton intercropping area, the potassium consumption can be increased appropriately.