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灌阳县地处桂北,年平均气温17.9℃,历史上为一季稻区,1956年开始推广双季稻,但晚稻产量较低。1976年后在晚造推广种植杂交稻,使产量有所提高,但由于受当地温光条件限制,晚杂在本田营养生长期短,有效穗不足,增产优势得不到充分发挥,单产在250公斤左右徘徊。为了解决这个矛盾,1982年以来,我们开展了培育杂交晚稻壮秧的研究,经多年实践,总结推广了晚杂培育
Guanyang County is located in northern Guangxi, the annual average temperature of 17.9 ℃, the history of a quarter of rice, double-cropped rice began to promote in 1956, but the lower yield of late rice. However, due to the limited temperature and light conditions in the region, the late hybrids had a short vegetative growth period and insufficient effective spikes, which could not give full play to their superiority in yield enhancement. The yield per unit area was at 250 Hover around the kilogram. In order to solve this contradiction, since 1982, we have carried out the research on cultivating the late seedling of hybrid late rice. After years of practice, we have summarized the late hybrid breeding