玉米机械覆盖地膜技术,是综合利用种子、水、肥、光、气、热等因素提高玉米单产的一项有效措施,但是这项技术不是简单地覆上地膜就能增产,各地只有因地制宜地采取相应措施,充分发挥机覆膜的效应,才能取得显著经济效益。否则,弄不好还会赔本。现根据我们大面积推广的经验和教训,提出以下实用技术供参考。 (1)选地:通过实践表明,玉米地膜覆盖因土地类型不同,其增产效果和经济效益相差很大。在山西雁北地区,以水浇地效果最好,轻度盐碱地次之。所以,干旱地区应选水浇地(保浇地、扩浇地)、轻度盐 Maize mechanical covering film technology is an effective measure to improve yield of maize by comprehensively utilizing the factors of seed, water, fertilizer, light, gas and heat etc. However, this technology can not only increase the yield of maize by simply covering the film, but also can only be taken according to local conditions Corresponding measures, give full play to the machine coating effect, in order to obtain significant economic benefits. Otherwise, get it will lose money. Now based on our extensive experience and lessons learned, put forward the following practical techniques for reference. (1) Election: Through practice, it shows that the plastic film mulching of maize has a big difference between increasing yield and economic benefits due to different types of land. Yanbei in Shanxi Province, with the best irrigation, mild saline second. Therefore, arid areas should be irrigated (Paul conservancy, expansion of irrigated), mild salt