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为探明小麦品种‘扬麦11’在崇明东滩盐碱地栽培的高产群体茎蘖特征和产量结构,收集整理了2012~2014年的试验资料,分析不同产量类型的群体建成茎蘖特征和产量构成因素。结果表明,崇明盐碱地区‘扬麦11’小麦高产(≥6000 kg/hm~2)群体适宜基本苗和最高茎蘖数为预期有效穗数的0.40~0.46倍和2.4~2.7倍为宜,小麦群体成穗率40%以上;不同产量类型的产量构成因素对产量的贡献大小依次为:有效穗数>实粒数>结实率>千粒重。高产小麦群体应在稳定适宜穗数基础上,提高结实率,以争取粒数为主攻目标。对不同产量类型中产量与产量构成因素进行统计分析,明确了产量与产量构成因素间的相关性存在明显的差异,这对获得不同产量类型目标的产量构成因素调控具有重要指导意义。
In order to explore the tiller characteristics and yield structure of the high-yielding population of Yangmai 11 in the saline-alkali soil of Chongming Island, the experimental data of 2012 ~ 2014 were collected and analyzed to analyze the characteristics of stem-tillers and yield components of different yield groups factor. The results showed that suitable basal seedlings and maximum tiller number of ’Yangmai 11’ wheat with high yield (≥6000 kg / hm ~ 2) in Chongming saline-alkali region were 0.40 ~ 0.46 times and 2.4 ~ 2.7 times of the predicted effective panicles, The population spike rate was over 40%. The contribution of yield components of different yield types to yield were as follows: effective panicles> real grains> seed setting rate> 1000-grain weight. High-yielding wheat population should be based on the number of stable and suitable spike, improve seed setting rate, in order to obtain the number of particles as the main target. The statistical analysis of yield and yield components in different yield types made it clear that the correlation between yield and yield component factors is obviously different, which has important guiding significance for the regulation of yield components of different yield types.