摘要
本文研究了播期和密度处理对百农矮抗58的群体动态、农艺性状、产量及产量构成因素的影响。结果表明:在本试验条件下,随着播期的推迟,有效穗数、产量、株高等呈减小趋势;同一播期不同密度下,随密度的加大,穗粒数、单株分蘖数、单株成穗数等呈减小趋势;播期、密度对千粒重影响不显著;播期与密度互作对百农矮抗58产量及其构成因素影响差异不显著。百农矮抗58的适宜播期为10月1日到10月15日,适宜密度为每亩15万到20万基本苗。
Effects of sowing date and plant density on the dynamics of population ,agronomic traits, yield and yield components of Bainong-AK58 were studied.The results showed that the height of plants, number of effective tillers and yield of Bainong-AK58 decreased with sowing date delaying, the grain numbers per spikes, the effective tillers per plant and panicle number per plant decreased with the increasing of plant density at same sowing date, but the effects of sowing date and plant density on 1000- grain weight were not significantly, the interaction effects of sowing date and plant density on yield and yield components of Bainong-AK58 were not significantly. The suitable plant density of Bainong- AK58 were 150000-200000/667m^2 basic seedling and the suitable sowing date was from Oct.lst to Oct. 15.
基金
河南省自然科学基金(0511030900)
河南省教育厅科技攻关项目(2006210013)
