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为探讨冬小麦适宜播期播量,以烟农5158为材料,采用裂区试验设计进行了试验。结果表明:随播期推迟株高降低、主茎叶龄减少,随播量增加株高增加、主茎叶龄变化不大。不同的播期播量对冬小麦产量及产量性状的影响均达极显著水平。随播期(9月27日除外)推迟,产量、成穗数降低,穗粒数和千粒重提高;随播量的增加,产量、成穗数增加,穗粒数和千粒重降低。播期播量最佳组合为10月3日播种、180万株/hm2播量,产量达7 746.0kg/hm2。成穗数是决定产量的关键因素。
In order to discuss the suitable sowing date of winter wheat, experiment was carried out by using split-plot experimental design with tobacco cultivar 5158 as material. The results showed that with the delay of plant height and sowing date, the leaf age of main stems decreased. With the sowing height increasing, the leaf age of main stems did not change much. The effects of different sowing dates on the yield and yield traits of winter wheat reached the extremely significant level. With the sowing date (except Sept. 27) delayed, the yield and the number of spikelets decreased, the number of grains per spike and the 1000-grain weight increased. With the increase of sowing date, the yield, the number of spikelets, the number of grains per spike and the weight of 1000-grain weight decreased. The best combination of sowing date was sowing on October 3, and the sowing amount of 1.8 million / hm2 reached 7 746.0kg / hm2. Spike number is the key factor in determining the yield.