摘要
在阿拉善左旗境内选取5个试验区,观测不同时期春季造林和秋季造林新梢生长长度、地径大小、冠幅大小及苗木成活率。结果表明:各试验区内春季造林和秋季造林苗木生长量和成活率的表现规律较一致;春季造林,苗木在进入生长季后,生长缓慢,到6月后,生长速度开始加快,但与秋季造林的苗木生长量差异显著(P<0.05),秋季造林苗木生长量显著高于春季造林生长量,而且,秋季造林成活率也显著高于春季造林成活率。因此,本地区适宜秋季造林。
Five test areas within the territory of Alxa Left Banner were selected 〉 growth length of new shoots 〉 diame-ter size,crown size and seedling survival rate in spring afforestationautumn afforestation at different periods were observed. Through the analysis,its was found that the rule of the growth survival rate of Haloxylon ammoden-dron is consistent in spring or autumnin all test areas. In general while entered the growing season,growth of seed-lings after the spring afforestation is slower^＊after June,growth rate began to accelerate〉 but compared with autumn afforestation,seedling growth is significantly different （P 〈1 0. 05） 〉 the autumn afforestation seedling growth is sig-nificantly higher than that in spring; the survival rate of autumn afforestation is also significantly higher than that in spring. Therefore,this area is suitable for autumn afforestation.
出处
《防护林科技》
2017年第7期57-59,118,共4页
Protection Forest Science and Technology
基金
国家重点研发计划课题(2016YFC05801003)
关键词
梭梭
秋季造林
成活率
Haloxylon ammodendron
afforestation in autumn
survival rate
