江汉平原美洲黑杨不同密度扦插育苗试验研究

Experiment of populus deltoides cutting seedling of Different Density in Jianghan plain

摘要:

以江汉平原杨树新品种华石 2号杨为试验材料 , 开展 5种不同密度扦插育苗试验 。结果表明 , 华石 2号杨在 5种 育苗密度中 , 40cm × 50cm 的苗木生长量最佳 , 其次是 20 cm × 90 cm 。不 同 密度无论是一根一干 , 还是两根一干 , 密度 40cm × 50cm与 20cm × 90cm之间对苗木生长量的影响差异不显著 。在一根一干与两根一干生长期内 , 结合苗木质量等 级、育苗成本等因素 , 推荐江汉平原杨树育苗密度采用宽行窄株 20cm × 90cm模式 , 提升育苗经济效益。

Abstract:

we compared five different planting density cutting seedling experiment , and used new poplar variety of 6Hua- shi 2》for experimental material in Jianghan plain . The results showed that among five seedling densities , the growth of seedlings with the density of 40cm ×50cm was the best , followed by 20cm ×90cm . There were no significant differences between density of 40cm ×50cm and 20cm ×90cm , no matter one-year old stem with one-year old root or one-year old stem with two-year old root. combined the seedling quality grade with the cost of seedling , it is recommended that the seedling density of poplar with 20cm ×90cm , that is the mode wide row and narrow plant in Jianghan plain , to improve the economic benefits of seedling.