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选用我国有代表性的不同类型小麦品种14个,利用海拔与经度相近、不同纬度、不同播期温光因子的差异,分析了温先因子对抽穗期的影响,并建立了温光生态模型。结果表明:各参试品种在同期播种情况下由南到北,播种至抽穗的天数延长,纬度每向北增加5°N,将延长14.0～43.1天;冬性越强,延长的天数越少。温光组合模型为:D=B_0+B_1T+B_3T~2+B_3L。B_1、B_2随品种冬性的增强而减小,L则相反。反应出冬性越强,低温长日照特性越明显。播种至抽穗最短天数的温度强春性为17.8℃、春性为16.9℃、过渡类为15.5℃、冬性为11.9℃。
14 representative wheat cultivars with different types were selected. Based on the differences of temperature and light factors between altitude and longitude, latitude and different sowing dates, the effect of temperature precedent factors on heading date was analyzed, and a warm light ecological model was established. The results showed that the number of days from sowing to heading was prolonged in all tested varieties from south to north in the same seeding period, and each latitude increased by 5 ° N to the north would extend from 14.0 to 43.1 days. The stronger the winter, the less the number of days to be lengthened . Temperature and light combination model is: D = B_0 + B_1T + B_3T ~ 2 + B_3L. B_1, B_2 decreased with the increase of winter, but L increased. Response to the stronger winter, low temperature long-day characteristics of the more obvious. Temperatures at sowing to the earliest days of heading were strongly temperate at 17.8 ° C, spring at 16.9 ° C, transitional at 15.5 ° C and winter at 11.9 ° C.