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采用大垄双行覆膜栽培技术是玉米制种的成功经验。从1998年开始在甘南县良种场进行覆膜制种,制种产量与未覆膜相比,成倍增产。大垄覆膜主要功能就是增温、保水、增产。选茬整地,改垄夹肥玉米的适应性较强,对土壤和轮作的要求不十分严格,从茬口的选择上,除甜菜茬、向日葵外均可种植,这两个作物的茬口属硬瘦茬,不适于种玉米。选地要选择排水良好,不积水的地块种植。要求做到伏秋整地,规方连
The use of large ridge double line of film cultivation technology is the success of seed production in maize. From 1998 onwards, Gannan County, seed field planting, seed production and uncoated, doubled yield. The main function of large ridge is to increase temperature, water, increase production. Select stubble site preparation, improved ridge clip maize adaptability, the requirements of the soil and rotation is not very strict, from the choice of stubble, in addition to beet stubble, sunflower can be planted outside, both crop stubble hard flaccid Stubble, not suitable for planting corn. Elect to choose well-drained, plots plots planted. Autumn and autumn are required to make the whole area