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地处塞北的平泉县,1990年34.02万亩春玉米,经采用综合增产技术,打破了十年徘徊,单产首次突破400公斤,比1989年亩增112公斤,增产率高达38.89%。其主要技术是概括为六句歌:对路品种最重要因地种植才牢靠为使品种对路,全县划分两个气候区,在无霜期130天以上的区域,推广丹玉13、中单2和莫17×吉63这三个高产品种,在无霜期不足130天的区域,采用地膜覆盖的也推广这三个品种,不盖膜的推广黄417等短日期杂交种。在因地种植上,高产地块用增产潜力大的丹玉13和中单2号,中、低产地块用稳产性较好的莫17×吉63。这就充分发挥了杂交种的增产性能。据考察,这种种植比不规范用种增产10%左右。
Located in the northern part of Pingquan County in northern Saibei, 340,200 hectares of spring maize in 1990 broke through a decade of hibernation with the comprehensive stimulation technology. The yield hit 400 kg for the first time, an increase of 112 kilograms compared with that in 1989 and the rate of increase was as high as 38.89%. The main technology is summarized as six songs: the most important species on the road because of planting only solid to make variety on the road, the county is divided into two climatic zones in the frost-free period more than 130 days of the area to promote Dan Yu 13, single 2 And Mo 17 × Ji 63 the three high-yielding species, in the frost-free period of less than 130 days in the area, the use of mulching also promote these three varieties, not cover the promotion of yellow 417 and other short-date hybrids. Due to the planting, high-yield plots with large yield potential Dan Yu 13 and No. 2 in the middle and low yield plots with good stability of the Mo 17 × Ji 63. This gives full play to the hybrid yield increase. According to investigation, this planting than non-standard use of about 10% increase.