黔单23号产量与构成因素及丰产稳产性分析

杂交玉米新品种黔单23号经贵州省玉米区域试验及生产试验表明:该品种具有优质、多抗、广适、丰产稳产等优点,适宜在贵州省种植。通过回归和通径分析方法对黔单23号进行产量与构成因子之间分析,结果表明影响黔单23号产量主要因素为百粒重、单粒穗重、株高、秃尖,其对产量贡献大小依次为:百粒重>单穗粒重>株高>秃尖,建立了产量与主要构成因子间的多元最优回归方程:y=172.44-0.65 X_1-29.29 X_5+1.08 X_6+12.28 X_7。

Analysis on Yield Component Factors and High-Yield Stability of Qiandan No.23

Hybrid maize varieties,Qiandan No.23 had been carried out zhe Guizhou Provincial corn regional test and production tests.The results indicating：Qiandan No.23 has a high quality,multi-resistance,wide adaptability,yielding merit,suitable for planting in Guizhou province. Through regression and path analysis methods to make qiandan No.23 yields and constitute factors analysis,it turned out that affect yield qiandan No.23 as the main factors affecting the corn of hundred grain weight,ear of grain weight,plant height, bald tip, the size of its eontri bution to yield the following order： Hundred grain weight 〉 ear of grain weight 〉 plant height 〉 bald tip, established the yield and main constitute factors of multivariate regression equation y = 172.44 -0.65 X1 -29.29 X5 ＋ 1.08 X6 ＋ 12.28 X7.