应当重视玉米杂交种的综合利用

• 作 者: 吴纪 刘广璟 万兴帆 徐东春
• 机 构: 周口地区农科所,周口地区农科所,周口地区农科所,周口地区农科所,
• 出 处: 河南农林科技
• 发表日期: 1984年11期
• 关键词: 杂交种 单交种 制种田 玉米播种面积 制种面积 双交 自交系 玉米单交种 制种产量 生产责任制

农村实行生产责任制后,玉米制种田的隔离成为难题。我区常年种植玉米300万亩左右,玉米春播制种面积很少,夏播单交制种低而不稳。如单纯依靠单交种,势必出现杂交种的短缺,农民不得不种越代种,杂交种种植面积不仅不能扩大,反而将会有减少的趋势。据了解,1983年我区玉米越代种面积占玉米播种面积将近一半,仅此一项即损

After the implementation of the production responsibility system in rural areas, the isolation of corn farming becomes a problem. In our district, there are about 3 million mu of corn planted all the year round. There are only a few areas planted with corn in spring and low and unstable in summer sowing. If we rely solely on single cross-species, there will inevitably be a shortage of hybrids. Farmers will have to plant more cross-species. The hybrid acreage will not only expand but will decrease. It is understood that in 1983 the area of ​​maize in our area accounted for nearly half of corn sown area, only one that damage