密度对青贮玉米产量和品质的影响

以4个青贮玉米品种为试验材料,研究了4个种植密度对青贮玉米生物产量、干物质产量和品质的影响。结果表明:不同品种之间生物产量和干物质产量差异极显著;不同密度下品种的生物产量和干物质产量差异极显著;不同密度对不同品种品质影响较大,增加密度有助于青贮玉米品质的提高。青贮玉米品种的生育期、株高、穗位高、茎粗、收获期、绿叶数差异不大,品种间差异主要由品种自身特性决定。

Effect of Density on Yield and Quality of Silage Maize

Four kinds of planting densities were designed and studied their effort on biomass yield,dry matter yield and quality of four silage maize cultivars.The results indicated that there was ultra-significant difference in biomass and dry matter yield between difference cultivars or different planting densities.Under the condition of interaction between cultivars and planting densities.The difference in biomass and dry yield was respectively significant and ultra-significant.The different densities had a big effect to the different varieties quality.Increases the density is helpful to the silage maize quality enhancement,the difference of the birth date number,plant high,ear position,stem diameter,harvesting time and green leaf number are not big,the difference mainly decided by variety own characteristic.