Correlation Analysis and Comprehensive Evaluation on Yield and Main Agronomic Traits of 8 New Maize Varieties for Both Grain and Forage
High biological yield and grain yield are important evaluation indexes of corn varieties for both grain and forage.In order to objectively evaluate the yield performance of maize varieties for both grain and forage,8 new maize varieties for both grain and forage were selected as research objects,the yield index and main ag-ronomic characters were measured and compared through field experiments,the correlation among the indexes was analyzed,and the comprehensive evaluation of the tested varieties was carried out by the method of mem-bership function.The results showed that fresh grass yield,dry matter yield and grain yield were correlated closely.The plant height,ear position,green leaf number,ear diameter had a strong correlation with biologi-cal yield,which played an important role in the aspect of improving the biological yield for both grain and for-age corn,and the green leaf number and the ear diameter also played an important role in increasing grain yield of grain and forage corn.The comprehensive analysis of the seven indexes screened out was put up by membership function method,and it was showed that the state approved new maize variety Z710 had the high-est membership function value,followed by Dan 3232 and Dan 32317.Combination with various indicators,the conclusion was that comprehensive performances of Z710 and Dan 32317 were excellent,which could be used as new maize varieties for both grain and forage,and Dan 3232 could be used mainly for silage as an al-ternative variety of both grain and forage maize varieties.
MaizeBoth grain and forageCorrelation analysisMembership functionComprehensive evalu-ation
国家科技期刊平台
NSTL
万方数据
