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玉米是丹东地区的主产作物,种值面积约占总耕地而积的40％,产量占50～60％,在粮食作物中居首位。努力提高玉米产量对增加粮食总产量具有重要意义。在毛主席无产阶级革命路线的指引下,随着生产条件的改善和群众性科学种田的蓬勃开展,近几年大面积推广玉米杂交种,1973年种植杂交种占玉米面积的22.9％。实践证明:种植优良的“丹玉”杂交种,一般增产20～30％,是一项经济而有效的增产措施。但由于对杂交种的丰产裁培规律认识不清,有些社队虽然种植杂交种,但产量出现高而不稳或不高不稳的现象。从本地区的生产实践出发,我们在“教育必须为无产阶级政治服务,必须同生产劳动相
Maize is the main crop in Dandong. The area of species accounts for 40% of the total cultivated land and the output accounts for 50% -60% of the total. It ranks first in the grain crops. Efforts to increase corn yield are of great significance to increase the total grain output. Under the guidance of Chairman Mao’s proletarian revolutionary line, with the improvement of production conditions and the vigorous development of mass scientific farming, maize hybrids have been extensively popularized in recent years. In 1973, hybrids accounted for 22.9% of the total maize area. Practice has proved that: planting fine “Dan Yu” hybrids, the general increase of 20 to 30%, is an economical and effective stimulation measures. However, due to the unclear understanding of the law of high yielding and cutting-off of hybrids, some communes and brigades, despite the planting of hybrids, are characterized by high and unsteady or unstable production. Starting from the practice of production in our region, we must "education must serve proletarian politics and must work in parallel with the production of labor