播期和播量对晋中盆地水地冬小麦产量的影响

Effect of Sowing Date and Sowing Rate on the Yield of Water Winter Wheat in Jinzhong Basin Area

为了探索播期和播量对晋中盆地水地冬小麦产量的影响,以晋太182为材料,采用2因素随机区组试验,研究了其适宜的播期和播量。结果表明,播期和播量及其二者互作对产量的影响均达到极显著水平;随着播期的推迟或播量的增大,产量均表现为先升高后降低;适宜的播期为9月24—29日,且以9月24日为最佳播期,适宜播量为375万-450万粒/hm^2;播期和播量的最佳组合为9月24日播种、375万粒/hm^2播量,在9月19日至10月14日期间,播期比9月24日每提前或推后1 d,对应的播量减少或增加15万粒/hm^2。

To explore the effect of sowing date and sowing rate on yield of water winter wheat in Jinzhong basin, suitable sowing date and sowing rate on Jintai 182 were studied by using two-factor randomized block experiment. The results showed that the effect of sowing date, sowing rate and their interaction on yield reached significant level. The yield was first increased and then decreased with the delay of sowing date or the increase of sowing rate. Suitable sowing date was from 24 th to 29 th September, with 24 th September was the best sowing date, the optimum sowing rate was 3.75 to 4.50 million grains per hectare. Sowing date and sowing rate of the best combination were 24 th September, 3.75 million grains per hectare grain sowing rate, in the period from 19 th September to 14 th October, sowing earlier or later than 24 th September every a day, sowing rate corresponding to increase or decrease the 0.15 million grains per hectare grain.