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玉米是我市的主要粮食作物,也是饲料的重要来源。历年播种面积均在百万亩左右。但是,单产一直偏低。随着玉米播种面积的稳定增长,采取新的栽培技术措施,逐步提高单位面积产量,是尽快解决农民温饱的大问题。为此,1986年我们开展了地膜覆盖栽培玉米的试验研究和大区示范工作。一、材料与方法小区试验分别设在建昌县杨树湾子乡和凌源县乌兰白乡。地膜均为锦州塑料制品厂生产的线型膜。每项试验均设三次重复,随机排列,小区面积30平方米。供试品种有丹玉十三、中单二号、
Corn is the city’s main food crops, but also an important source of feed. Over the years sown area are in million mu. However, yields have been low. With the steady growth of sown area of corn, adopting new cultivation techniques and measures to gradually increase the output per unit area is a major issue to solve the problem of adequate food and clothing for peasants as soon as possible. To this end, in 1986 we conducted a pilot study of plastic film mulching cultivation and regional demonstration work. First, the material and methods Cell test were located in Jianchang County, Yangshewanzi Township and Wulan white Township Lingyuan County. Film are Jinzhou Plastic Products Factory production of linear film. Each experiment was set three times repeated random arrangement, the plot area of 30 square meters. Test varieties Dan Yu 13, in the number two,