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近年来,我县玉米播种面积不断扩大,在栽培技术上普遍推广了麦田套种,这对延长玉米生长期,增加积温,提高产量起了重要作用。实践证明:夏玉米适当提早套种,是解决夏玉米高产与有效积温不足矛盾的主要途径。什么时间套种为好呢?1977年我们以官庄公社坡庄大队农科队为基点,进行了夏玉米分期播种试验。现将试验情况和结果分析如下: 试验田前茬小麦,品种为太山一号,亩产700斤左右。玉米品种为中晚熟的群单105,播种期自5月15日至6月25日每5天播一期,种植方式为大小垄,大垄2.4尺,小垄1.0尺,株距1尺,每亩3.500株。试验小区面积为0.127亩,按顺序排列,重复两次。
In recent years, my county corn planting area continues to expand, in cultivation techniques generally promote wheat interplanting, which extend the corn growth period, increase temperature, increase production played an important role. Practice has proved that: Early maize appropriate early interplanting, summer maize yield is to solve the problem of insufficient effective temperature and the main contradiction. What time intercropping as well? In 1977, we use the official Zhuang commune slope Village Brigade Agricultural Corps as the base, conducted a summer corn sowing trial. Now the test conditions and results are as follows: Experimental crop before wheat, varieties of Tai Shan One, about 700 pounds per mu. The maize varieties are middle to late-maturing clones 105. The sowing dates are sown every 5 days from May 15 to June 25, and the planting methods are size ridge, ridge width 2.4 feet, ridge 1.0 feet, spacing 1 foot each Mu 3.500 plants. Experimental plot area of 0.127 acres, arranged in order, repeated twice.