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一、合理划分地区性熟期的必要性品种的熟期分类,国内60年代、70年代曾有过这方面的研究和论述,但只涉及到某些粳稻品种,籼稻品种讲得很少,更谈不上杂交稻,并且其分类标准和方法也存在较大的问题。随着近年水稻品种的日益更新(如杂交稻的配套推广),品种群体扩大,品种布局的巨大变化,不但全国标准、省标准须予以修改、补充,而且还需根据各地生态条件,各阶段的品种结构与种植习惯,制定出一个比较全面、合理、切合当时当地生产实际的地区性熟期分类标准。
First, the reasonable classification of the maturity of the regional maturity classification of varieties, the domestic 60’s, 70’s there have been research and discussion in this area, but only to some of the japonica rice varieties, indigestible varieties speak less, more No mention of hybrid rice, and its classification criteria and methods there are major problems. With the recent update of rice varieties (such as the promotion of hybrid rice), the expansion of variety groups and the drastic changes of variety layout not only need to be revised and supplemented by national standards and provincial standards, but also need to be adjusted according to the ecological conditions in various regions Breed structure and planting habits, developed a more comprehensive and reasonable, at the time of the local production of the actual classification of ripening period.