播种量对过晚播元麦产量与品质的影响  

Effects of Sowing Density on the Yield and Quality of Extremely Late-sown Hulless Barley

作　　者：石晓旭 杨美英[1] 刘海翠 李赢 魏亚凤[1] 韩笑 石吕 薛亚光[1] 刘建[1] SHI Xiao-xu;YANG Mei-ying;LIU Hai-cui;LI Ying;WEI Ya-feng;HAN Xiao;SHI Lyu;XUE Ya-guang;LIU Jian(Jiangsu Yanjiang Area Institute of Agricultural Sciences,Nantong 226541,China)

机构地区：[1]江苏沿江地区农业科学研究所,江苏南通226541

出　　处：《大麦与谷类科学》2022年第2期21-28,共8页Barley and Cereal Sciences

基　　金：江苏省“六大人才高峰”培养项目(NY-200);南通市“226高层次人才培养工程”项目;南通市科技计划项目(MS22021037、JC20200163);江苏沿江地区农业科学研究所青年基金[YJ(2020)002]。

摘　　要：为探索过晚播元麦的适宜播种量,本文研究不同播种量(150.0、187.5、225.0、262.5、300.0 kg/hm;)对过晚播元麦株高、产量及籽粒品质的影响。随着播种量的增加,元麦株高、产量和籽粒中膳食纤维含量均呈增加趋势,千粒质量和籽粒中β-葡聚糖含量呈下降趋势;株高、有效穗数、穗粒数、产量以及籽粒中膳食纤维含量与播种量呈极显著正相关,籽粒中维生素E含量与播种量呈显著正相关,穗长、千粒质量以及籽粒中β-葡聚糖、粗蛋白含量与播种量呈极显著负相关。过晚播元麦播种量为262.50 kg/hm;时,产量达4.21 t/hm^(2),籽粒中膳食纤维、β-葡聚糖、粗蛋白、维生素E、总淀粉含量(质量分数)分别为26.02%、3.84%、113.69 g/kg、4.30 mg/kg、47.91%,表现出较强的产量及籽粒品质优势。To determine an appropriate sowing density for extremely late-sown hulless barley,this study assessed the effects of sowing density on plant height,yield,and grain quality of extremely late-sown hulless barley in a field trial.Five sowing densities were set as follows:150.0,187.5,225.0,262.5,300.0 kg/hm;.With elevating sowing density,hulless barley showed increases in plant height,yield,and dietary fiber content in grain;but reductions in 1000 grain weight andβ-glucan content in grain.Furthermore,sowing density had very significant(P<0.01)positive correlations with plant height,effective panicle number,grain number per panicle,yield,and dietary fiber content in grain;and had a significant(P<0.05)positive correlation with vitamin E content in grain;but had very significant(P<0.01)negative correlations with spike length,1000 grain weight,andβ-glucan and crude protein contents in grain.In the treatment with the sowing density of 262.50 kg/hm;,the yield reached 4.21×10;kg/hm;and the contents of dietary fiber,β-glucan,crude protein,vitamin E,and total starch in grain were 26.02%,3.84%,113.69 g/kg,4.30×10;g/kg,47.91%,respectively.Therefore,the optimal sowing density for extremely late-sown hulless barley is 262.50 kg/hm;,which is favorable for improving yield and grain quality.This study provides a theoretical basis for attaining stable yield and high quality of extremely late-sown hulless barley.

关 键 词：过晚播 元麦 播种量 产量 品质 

分 类 号：S512.3[农业科学—作物学]