限制因子学说和灰色关联分析在玉米栽培中的应用

Study on Application of Restrictive Factors and Grey Correlation Analysis on Cultivation in Maize

[目的]研究影响高产品种五谷1790产量的主要性状因素。[方法]以杂交玉米品种区域试验中高产品种五谷1790为材料,运用限制因子学说和灰色关联分析法,研究了株高、穗位高、有效穗、穗粒数和千粒重等性状与产量的关系,确定影响产量的主要性状限制因子。[结果]五谷1790主要性状与产量关联度的大小依次为穗粒数>有效穗数>穗位高>株高>千粒重,穗粒数和单位面积有效穗是影响产量的主要因素。[结论]该试验为玉米品种五谷1790高产栽培提供理论依据。

[Objeetivel The aim was to study the main factors affecting the yield of the high yield variety Wugu 1790. [Method] The relation between five characters including plant height, ear height, effective panicle, grain number per spike and 1 O00-grain weight and the yield of the high yield variety Wugu 1790 in the regional test for hybrid maize was studied by means of the restrictive factors and the relational grade analysis of grey system lheol7. [Result] The correlation degree of five traits of maize and its yield was grain number per spike 〉 effective panicle〉 ear height〉 plant height〉l 000-grain weight. The main factors affecting the yield were grain number per spike and effective panicle. [Conclusion] The study provided the theoretical basis for high yield cuhivation of high yield variety Wugu 1790.