【摘要】 为国审小麦品种新科麦169在生产上大面积推广及实现高产、超高产栽培提供理论依据,利用2014—2016年国家冬麦区黄淮南片水地组区域试验与2016—2017年黄淮南片水地生产试验结果,对新科麦169的产量及其产量构成因素(基本苗、最高茎蘖数、有效穗数、穗粒数、千粒重)进行相关统计分析。结果表明:新科麦169的基本苗平均264.3万/hm2,最高茎蘖数平均1 498万/hm2,有效穗数平均624万/hm2,穗粒数平均34.25粒,千粒重平均43.03g。相关性分析表明,除千粒重外,基本苗、最高茎蘖数、有效穗数、穗粒数与产量之间均呈正相关,相关程度依次为有效穗数>穗粒数>最高茎蘖数>基本苗;偏相关程度依次为有效穗数>穗粒数>千粒重>最高茎蘖数,基本苗的偏相关系数表现为负数。通径分析表明,有效穗数对产量的直接作用最大,基本苗对产量的直接作用最小。更多还原

【Abstract】 The correlations between fertility characteristic and yield components(basic seedling,maximum tiller,effective ear,seeds/ear and 1000-seed weight)of Xinkemai 169(a new national authorized wheat variety)were analyzed according to the results from regional tests of Southern Area of Huanghuai in 2014—2016 and production test of Southern Area of Huanghuai in 2016—2017 to provide the theoretical basis for large-area popularization in production and high yield &super high yield cultivation of Xinkemai 169.Result:The average basic seedling,maximum tiller,effective ear,seeds/ear and 1000-seed weight of Xinkemai 169 are 264.3 ten thousand/hm2,1 498 ten thousand/hm2,624 ten thousand/hm2,34.25 and 43.03 g respectively.The correlation analysis shows that basic seedling,maximum tiller,effective ear and seeds/ear are positively related to yield and the correlation degree is effective ear>seeds/ear> maximum tiller> basic seedlings.The partial correlation degree is effective ear > seeds/ear>1000-seed weight> maximum tiller and the partial correlation coefficient of basic seedling is negative.The path analysis shows that the number of effective ear and basic seedling has the maximum and minimum direction effect on yield of Xinkemai 169 separately.更多还原