不同播种密度对垦粳5号秧苗素质及产量的影响  

Effect of Different Sowing Density on the Quality and Yield of Kenjing 5 Seedling

作　　者：郑悦[1] 郑桂萍[1] 潘世驹 姜玉伟[1] 宋泽[1] 王龙[1] 张丽微[1] 仲维君 

机构地区：[1]黑龙江八一农垦大学,黑龙江大庆163319

出　　处：《湖北农业科学》2016年第8期1913-1916,共4页Hubei Agricultural Sciences

基　　金：黑龙江省教育厅项目(1251xnc109);黑龙江八一农垦大学省作物学重点学科学术骨干科研启动金项目(zwxqdj-8);黑龙江省重点学科群资助项目;国家科技支撑计划项目(2013BAD07B01-04)

摘　　要：采用单因素完全随机设计,以垦粳5号水稻(Oryza sativa L.)品种为试验材料,在不同播种密度条件下对秧苗株高、根长、根数、充实度等多方面产生的影响进行比较研究。结果表明,随着播种密度的增大,根长、根数、茎基宽以及充实度均呈降低趋势,且差异达到显著或极显著水平,播种密度与理论产量呈负相关,但差异不显著,秧苗素质指标与理论产量的相关系数排序为百株地上干重>充实度>根长>根数>百株地下干重>茎基宽。播种密度为125 g/盘的产量最高,秧苗素质各项指标表现良好,适当降低秧田播种量能够改善水稻秧苗素质。Using single-factor completely random design, Kenjiandao 5 was studied to understand the effect of different sowing density on seedling height, root length, root number and plumpness of seedlings. The results showed that the root length, root number, base stem width and plumpness decreased as the sowing density increased. The differences were a significant. Sowing density was negatively corelated to the theoretical yield, but the difference between them was not significant. The correlation coefficient between quality indexes of seedlings and the theoretical yield showed the order of 100 strains dry weight abovegroundplumpnessroot lengthroot number100 strains dry weight underground base stem width. The yield was the highest for the sowing density of 125 g / disk, the indexes of seedling quality were good, appropriate reduction of the amount of nursery seeding can improve the seedling quality of rice.

关 键 词：水稻(Oryza SATIVA L.) 播种密度 秧苗素质 产量 

分 类 号：S352.3[农业科学—作物栽培与耕作技术] S511[农业科学—农艺学]