湖南、广西研究推广杂优稻的经验

• 出 处: 科技简报
• 发表日期: 1977年12期
• 关键词: 常规种 双季晚稻 珍珠矮 科研进展 常规稻 寒露风 花药开裂 齐穗 单产 杂种优势

一、两省杂优稻的生产及科研进展。1976年湖南省推广杂优稻占全国1976年推广面积的65%。全省每一个县都不同程度地试种了杂优稻。绝大多数比当地当家常规种增产。据统计,全省双季晚杂优稻平均亩产610斤。比常规种一般都能增产150—200多斤。该省过去双季晚稻的亩产水平一向比较低,1975年全省双季晚稻平均单产仅为350斤,对比之下,显得杂优稻的增产幅度就更大了。

First, the two provinces hybrid rice production and research progress. In 1976, the promotion of hybrid rice in Hunan accounted for 65% of the total area popularized in 1976 in China. Every county in the province has tried hybrid rice to varying degrees. The vast majority of producers than the local regular production. According to statistics, the province’s double season late hybrid rice average yield of 610 kg. In general than the conventional species can increase 150-200 kg. In the past, the yield per mu of late rice in the province has always been relatively low. In 1975, the average yield of double-season late rice in the province was only 350 kg. By contrast, the yield of hybrid rice was even larger.