【摘要】 选用在江汉平原大面积推广的小麦品种鄂恩4号、鄂恩1号及本院选育的稳定品系"92516"、"966057"作分期播种试验,结果表明,播期对小麦的生育期和产量影响较大,并主要通过影响有效穗数、穗粒重和千粒重而实现,适期播种与晚播在千粒重、穗粒数、有效穗数、穗粒重、株高等性状方面差异达显著水平。更多还原

【Abstract】 The experimental samples were Een No.4 and Een No.1 generalized in Jianghan plain. The stable sample 92516 and 966057 were tested by different sowing dates. The results revealed that different sowing dates had great influence on growth season and yields of wheat. The influence was mainly on effective number of spikes, weight of spikes and 1000-grain weight. The differences on properties including 1000-grain weight, number of grains per spike, effective number of spikes were most significant between grains per spike, effective number of spikes were most significant between sowing in optimun period and late sowing.更多还原