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我区在改制过程中,为了克服季节矛盾,迫切需要生育期短而早熟的小麦品种,以便充分地利用自然条件,争取熟熟增产。1973年我所从矮秆红×荆州黑麦F_(13)中选出了一个特早熟小麦品种,即荆州矮早熟21号。据江苏省农科院测定,其对光长反应最为迟纯,因而表现早熟性稳定。但其缺点也较突出,一是穗部经济性状差,生产潜力不大;二是抽穗虽早,但灌浆速度不快,遇到低温容易遭受冻害产生不育,结实率较低,因而长期不能用于大面积生产。
In the process of restructuring, in order to overcome the seasonal contradictions, we urgently need short-maturity and early-maturing wheat varieties in order to make full use of natural conditions and strive for more mature production. In 1973, we selected a special precocious wheat variety from dwarf red × Jingzhou rye F_ (13), namely Jingzhou short precocity 21. According to the determination of Jiangsu Provincial Academy of Agricultural Sciences, the most light of the reaction of the most pure late, so the performance of precocious stability. But its shortcomings are also more prominent, first, poor economic performance of the spike, the production potential is not large; second heading is early, but the filling speed is not fast, cold frost encountered low temperature prone to infertility, low seed setting rate, which can not be long-term use In a large area of production.