静宁县不同立地条件下各造林模式成效分析  

Effect Analysis of Various Afforestation Model under Different Site Conditions in Jingning County

作　　者：程小应[1] 王兄喜[1] 李朔南[1] 李东平[1] 

机构地区：[1]静宁县林业局,甘肃平凉743400

出　　处：《防护林科技》2014年第12期31-33,共3页Protection Forest Science and Technology

摘　　要：基于静宁县三荒造林成活率低,且苗木生长缓慢,难于成林的现状,选取能代表静宁地域特点的北岔集流域,于2002年春至2011年秋,通过在梁峁、阳坡、阴坡、沟道4个立地条件下,采用山毛桃+沙棘、侧柏+沙棘、刺槐+沙棘、山杏+沙棘、刺槐纯林等5种模式进行造林试验,对当年成活率、3年保存率、10年成林情况进行调查,静宁县各立地类型下最适合的树种混交搭配组合模式为:干旱的梁峁和阳坡,最适宜沙棘、山毛桃1∶1混交模式;相对湿润的阴坡,最适宜刺槐、沙棘1∶1混交模式;湿润的沟道,最适宜刺槐纯林建设模式;侧柏、沙棘1∶1混交模式及山杏、沙棘1∶1混交模式因不适合当地立地条件被淘汰。Based on current situation (low survival rate,slow growth of seedlings,difficult to establish forest),affor-estation experiments were conducted by five modes (Amygdalus tangutica +Hippophae rhamnoides ,P latycladus orientalis +Hippophae rhamnoides ,Robinia pseudoacacia +Hippophae rhamnoides ,Prunus armeniaca +Hipp-ophae rhamnoides ,pure forest of Robinia pseudoacacia )under four site conditions (mountain ridge,sunny slope, shady slope & ditch)from Spring in 2002 to Autumn in 201 1 in Beichaji Valley which can represent geographical features for Jingning County;the situation (survival rate in the very year,the preservation rate for three years and establishing forest for 10 years)were investigated.The most appropriate combination model for mixed tree species under each site type in Jingning County is:arid mountain ridge & sunny slope is optimal for mixed model of Hippo-phae rhamnoides ∶Amygdalus tangutica (1∶1);relatively moist shady slope is optimal for mixed model of Robinia pseudoacacia∶ Hippophae rhamnoides (1∶1);moist ditch is optimal for established model of pure forest of Robin-ia pseudoacacia ;unfitted for the local site conditions,the mixed model of P latycladus orientalis ∶Hippophae rh-amnoides (1∶1)and Prunus armeniaca ∶Hippophae rhamnoides (1∶1)were eliminated.

关 键 词：立地条件 营林模式 造林成效 静宁 

分 类 号：S725.7[农业科学—林木遗传育种]