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推广优良品种,促进农业增产,如今已经成为广大农民群众的共识。临颍县是位于豫中南地区的一个平原农业县,常年夏玉米种植面积22万亩。70年代末80年代初,我县玉米主导品种是郑单2号,配套品种有郑单1号、豫农704及烟单14等,产量水平在250kg左右。1986年至1991年,主导品种是丹玉13,配套品种是丹玉11及掖单系列品种,亩产量水平上升到亩产300kg左右。1992年以来掖单2号逐步取代了
The promotion of fine varieties and the promotion of agricultural production have now become the consensus of the broad masses of peasants. Linying County is located in southern Henan Province, a plain agricultural county, perennial summer corn planting area of 220000 acres. In the late 1970s and early 1980s, the leading corn variety in our county was Zhengdan 2 with the matching varieties Zhengdan 1, Yunsong 704 and Yandan 14, with the output level of about 250kg. From 1986 to 1991, the dominant variety was Dan Yu 13, with the matching varieties being Dan Yudai 11 and Yedian Series, and the mu production level rose to about 300 kg per mu. Yedan No. 2 has been gradually replaced since 1992