摘要
以河南省北部地区不同时期广泛种植、有代表性的冬小麦品种为供试材料,通过分析其产量、产量构成因素,研究了冬小麦品种更新的变化规律。结果表明,随着品种更替,冬小麦产量显著提高,年平均增长1.59%,收获指数年平均增长1.20%,株高年平均下降0.65%,千粒重年平均上升0.52%,单位面积有效穗数和穗粒数没有显著变化。产量与收获指数呈极显著正相关,与株高呈极显著负相关。收获指数的增加,株高的下降是产量增加的主要因素。
The change rule of renovation of variety of the typical winter wheat cultivars widely planted in different ages in North Henan was studied by analyzing the yield and factors affecting the yield.The results showed that the yield of the newer cultivars was higher than the older ones,the annual yield increase rate of wheat resulted from the cultivars updating was 1.59%.The harvest index of wheat increased by 1.20% per annum but its height decreased by 0.65% per annum.Besides,1000-grain weight increased slightly,annual increase rate was 0.52%.The unit area kernel numbers and wheat number did not change much between the old and new cultivars.Yield had the very significant positive correlation with the harvest index,and had the very significant negative correlation with height.It was observed that higher harvest index and lower plant height were the main factors ofr yield increasing.
出处
《湖北农业科学》
北大核心
2013年第6期1256-1259,共4页
Hubei Agricultural Sciences
基金
河南省科技攻关项目(122102110085)
关键词
冬小麦品种
产量
产量性状
豫北地区
winter wheat cultivars
yield
yield components
North Henan
