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为了适应农业高速度发展的需要,尽快评选出适宜于三熟制栽培的早熟、抗病、高产的优良玉米杂交种,供生产上推广应用,我场今年参加了市杂交玉米的品种比较试验,结果如下。一、试验设计试验品种,晚熟种有丹玉6号(对照),9—145×330,2118,2118×300。早熟种有7505(对照),中单2号,2148。采用随机区组排列。重复两次,小区长83.34市尺,宽7.2市尺,面积为600平方市尺,每小区种4行,宽窄行种植,大行距为2.4市尺,小行距为1.2市尺,四周设保护行,小区间开有排水沟。
In order to meet the needs of high-speed development of agriculture, as soon as possible selected suitable for three-year-old cultivation of early maturity, disease resistance, high yield of good hybrid corn for the promotion of production applications, this field I participated in the city of hybrid corn varieties of comparative trials, The result is as follows. First, the experimental design of experimental varieties, late-maturing species Dan Yu 6 (control), 9-145 × 330,2118,2118 × 300. The precocious species are 7505 (control), Zhongdan 2, 2148. Random block arrangement. Repeated twice, the district is 83.34 feet long, 7.2 feet wide, with an area of 600 square feet, each district 4 rows, wide and narrow rows of planting, walking distance of 2.4 feet, small row spacing of 1.2 feet, surrounded by protection line Drainage ditch between the small area.