田间低磷胁迫对沈农265和辽粳294水稻产量性状的影响  

The Influence of Low Phosphorus Stress on the Yield of Shennong 265 and Liaojin 294

作　　者：宋桂云[1,2] 苏雅乐[1] 苏慧[1] 张丽娟[1] 徐正进[2] 王云[1] 

机构地区：[1]内蒙古民族大学农学院,内蒙古通辽028042 [2]沈阳农业大学,辽宁沈阳110161

出　　处：《内蒙古民族大学学报（自然科学版）》2008年第6期632-636,共5页Journal of Inner Mongolia Minzu University：Natural Sciences

摘　　要：选用典型直立穗型品种沈农265和直立穗型品种辽粳294为试材,研究田间低磷胁迫对其产量性状的影响.结果表明,田间低磷胁迫使两个水稻品种的经济产量和生物产量都下降,其中沈农265下降幅度较小.同时田间低磷使沈农265的穗数减少,穗粒数减少,着粒密度下降;辽粳294则表现为穗长增加,穗粒数和着粒密度增加,这可能是由于田间低磷使辽粳294分蘖减少较多所致;沈农265的综合耐低磷力属于一级指标,辽粳294属于二级指标,表明沈农265耐低磷力较强,辽粳294为中等耐低磷品种.Grain yield and biomass decrease with low phosphate in field, and reduce of Shennong 265 by a small margin. Spike and grain number of Shennong 265 also decrease with Low phosphate in field, grain density per spike reduce; while spike longth increase, grain number and grain density per spike of Liaojing 294 is upping with low phosphate in field, the difference perhaps due to low phosphate in field made the filler number of Liaojing 294 decrease more. The comprehensive low - phosphate - bearing ability of Shennong 265 reach to the first level, and that of Liaojing 294 reach to the second level. Which indicates Shennong 265 ＇s low - phosphate - bearing ability is very great, and Liaojing 294＇s is middle.

关 键 词：低磷胁迫 产量结构 经济产量 生物产量 

分 类 号：S511[农业科学—作物学]