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我们虎鹿公社的秋粮,90％以上是玉米。自1973年大力推广杂交玉米以来,杂交玉米的种植面积不断扩大,目前全公社的秋玉米几乎都是杂交玉米。玉米的单位面积产量,也因杂交玉米的推广而得到不断提高。1977年全公社秋玉米平均亩产达583斤,比1976年平均亩产470斤又提高了一大步。同时,还出现了一季亩产玉米800斤以上的生产队,1000斤以上的农科站,1100斤以上的高产丘。可是杂交玉米的杂交优势,目前只能利用一代,因此,必须年年制种才能年年
We tiger deer commune autumn, more than 90% is corn. Since the introduction of hybrid maize in 1973, the area under cultivation for hybrid maize has been expanding. At present, almost all autumn maize in the whole commune is hybrid maize. Corn yield per unit area, but also because of the promotion of hybrid corn has been continuously improved. In 1977, the average commune autumn corn reached 583 kg per mu, an increase of 470 kg from the 1976 average and a big step forward. In the meantime, a production team of more than 800 kilograms per mu of corn per mu, an agricultural science station of over 1,000 kilograms, and a high-yield mound of more than 1100 kilograms have also emerged. However, the hybridization advantage of hybrid corn can only utilize one generation at present. Therefore,