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三、玉米“立体通透栽培”技术要点：（一）整地施肥1．施肥方法：门）大垄栽培采用“双分”施肥法。即：一次性分层施肥。在整地打垄时采用三犁川，在原垄老沟用犁川10-15厘米，把配好的三元素复合肥施在垄底，再把口肥施在垄中，使玉米在整个生长发育过程中，苗期用口肥，中
Third, corn “three-dimensional transparent cultivation,” technical points: (a) site preparation fertilization 1. Fertilization methods: door) Ridge cultivation using “double points” fertilization method. That is: one-time stratification fertilization. In the process of land consolidation ridge using Sanyuan River, in the original ridge old ditch with plow 10-15 cm, with a good three-element compound fertilizer in the ridge, and then applied to the ridge in the ridge, so that the growth and development of corn In the process, seedling with mouth fat, in