不同播期和播量对青浦区主推小麦品种产量的影响

Influence of seeding date and seeding rate on yields of main wheat varieties in Qingpu,Shanghai

对青浦地区主推小麦品种进行了品种、播期、播量三因素裂区试验。结果表明,‘扬麦16'各处理产量明显高于其他2个品种,对当地的适应性较好;在10月31日至11月1 5日期间,随着播期的推迟产量呈逐渐下降的趋势,适当早播能有效提高产量水平;以360万株/hm^2基本苗的产量表现最好,适当提高播量可以增产。

The split-plot experiment of three factors（variety, seeding date and seeding rate） was carried out with the main wheat varieties in Qingpu area. The results showed that the variety ＇Yang- mai 16＇ had an obviously higher yield than other two varieties and was more suitable for planting in Qingpu ;Between Oct. 31 and Nov. 15, the yield gradually decreased with the seeding date delaying,but could be effectively improved by appropriate early seeding; Appropriately increasing seeding rate could improve the yield, and the yield performance was the best when the basic seedlings were 3.6 mil- lion plants/hm2.