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杨树为落叶高大乔木,具有适应性强、抗旱、抗寒、耐盐碱的特点,是新疆伊犁河谷最常见的营造速生用材林、防护林以及城乡绿化的主要树种。一、选择良种壮苗杨树是否能高效丰产,关键要选择良种壮苗。壮苗的标准是:1～2年生苗木,苗高3.5米以上,米径2.5厘米以上,根幅40厘米以上,吸足水分,苗木充分木质化,无病虫害、无劈裂损伤、干无较大弯曲。二、土壤选择1、选择适宜杨树生长的造林地,是实现杨树速生丰产的基本条件。杨树是落叶阔叶树中的速生树种,在
Poplar is a deciduous tall tree with characteristics of strong adaptability, drought resistance, cold resistance and salt resistance. It is the most common species of fast growing timber, shelterbelt and urban and rural afforestation in the Ili Valley in Xinjiang. First, the choice of seedling seedlings poplar can be efficient and high yield, the key to choose seedling strong seedlings. Strong seedling standard is: 1 to 2 years old seedlings, seedlings 3.5 meters high, more than 2.5 cm in diameter, more than 40 cm in diameter, Su foot full of water, seedlings full of lignification, no pests, no splitting damage, no dry Big bend. Second, the soil selection 1, choose suitable for the growth of poplar afforestation, is to achieve the basic conditions for fast-growing poplar. Poplar is a fast-growing tree species in deciduous broad-leaved trees