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总结各地的玉米开发措施,增产幅度最大,经济效益最高的是应用地膜覆盖栽培技术。在乌盟能否成功,去年首先在丰镇县开展了这项试验,设在三个乡、六个点,品种为“京早七号”。地膜种植的玉米亩产550—825公斤,平均亩产666公斤,比不覆膜的平均亩产463公斤增产213公斤。覆膜玉米同样具有早出苗(7—8天),早抽雄、吐丝(13—17天),提早成熟(15天)的特点。从长相上看,当覆膜玉米株高120厘米时,不覆膜玉米株高仅62厘米;当不覆膜玉米开始吐丝抽雄时,覆膜玉米已全部进入灌浆期。覆膜玉米籽粒饱满、千粒重高、产量高。若以覆膜玉米
Summary of corn development measures around, the largest yield increase, the highest economic efficiency is the application of plastic film cultivation techniques. The success of UmWin, first carried out in Fengzhen County last year, the pilot, located in three townships, six points, the varieties of “Beijing early on the 7th.” The mulching of mulching film covers an area of 550-825 kilograms per mu, with an average yield of 666 kilograms, an increase of 213 kilograms more than 463 kilograms per mu of non-mulching film. Mulched corn also has the characteristics of early emergence (7-8 days), early tasseling, silking (13-17 days), premature maturation (15 days). In terms of appearance, when the height of covered maize plant is 120 cm, the height of non-covered maize plant is only 62 cm. When uncoated maize begins to sprout, the covered maize has all entered the filling stage. Mulch corn grain full, 1000-grain weight, high yield. If the film covered corn