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选择四川春性强弱不同的小麦新品种，于１９９６～１９９８年在盆西平原稻茬麦田进行播期试验，结果表明：（１）小麦产量的播期效应因品种春性强弱和年份不同而存在显著差别。强春性早熟品种对迟播有较好的适应性，正常年份（无明显倒春寒）于１０月底播种不会出现结实异常，但在低温年份会因结实锐减导致严重减产；弱春性晚熟品种早播可获得较高产量，愈迟减产愈多；春性中熟品种年际之间和播期之间的产量波动都相对较小，适播期弹性较大，但以适期早播产量更佳。（２）强春性品种迟播后穗数和粒数变化较小，弱春性品种早播的穗数和穗粒数均较高，是其适宜迟播或早播的原因。三类型品种播期间千粒重的变化均相对较小。（３）旱区小麦抢墒早播宜选用弱春性品种，增加复种需晚播时，应选用强春性品种。
The results showed that: (1) The sowing date effect of wheat yield was different due to the spring strength and the different years of spring wheat varieties There are significant differences. Strong spring precocious varieties of late sowing have better adaptability, normal years (no obvious late spring cold) sowing at the end of October will not appear strong anomalies, but in low temperature years due to sharp decline in plum blossom led to severe cut; weak spring late maturing varieties Early sowing can get higher yield, the more late cut more; middle spring varieties of maturity and yield between the annual fluctuations are relatively small, suitable sowing flexibility, but the early sowing yield Better. (2) The number of spikelets and grain number of spring sexual varieties changed little after delayed sowing, and the number of spikelets and grains per spike of early spring planting varieties were weaker, which was the reason for late sowing or early sowing. The variation of 1000-grain weight during the sowing period of the three types was relatively small. (3) grab arid area of wheat moisture premature sowing should choose weak spring varieties, increasing the need for late sowing multiple sowing, the selection should be strong spring varieties.