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用800个中国水稻品种试验的结果指出:不同地区原产的品种不但对光照长度的反应特性不同,而且在短日照下的生育期也不同。这种特性称为短日生育性。北方的品种短日生育性较小;南方的品种从小到大都有。品种成熟期的早晚是其光照长度反应特性和短日生育性在一定环境条件下的具体表现,改变环境条件时,早晚熟的顺序随之改变。对光照长度反应弱的品种一般产量变化小,适应力大。试验结果得出各地区品种的光长反应特性和短日生育性。
With 800 Chinese rice varieties test results show that: native varieties in different regions not only response characteristics of different length of light, but also in the short-term growth period is also different. This feature is called short-term fertility. The short-term fertility of northern varieties smaller; southern varieties from small to large. The maturity of the varieties of the morning and evening light-length response characteristics and short-day fertility in a specific environmental conditions, the specific performance, change the environmental conditions, sooner or later the order of ripening change. The varieties with weak response to the light length had little change in general output and great adaptability. The test results obtained the long-range photoreactive characteristics and short-day fertility of varieties in different regions.