渭北黄土丘陵区不同杜仲造林技术比较分析

Comparative Analysis of Afforestation with Eucommia ulmoides in Loess Hilly Area of Weibei Plateau

杜仲有很强的萌发新枝能力,短截更能促生新枝萌发和发育。本研究对渭北黄土丘陵旱塬区包括截干在内的杜仲栽植、培育综合措施成效进行了试验研究,结果表明,截干及其组合措施能显著提高杜仲造林成活率,促进幼树生长。其中,截干起主导作用;造林成活率和幼树生长对不同措施及坡向的响应程度不同,造林成活率方面,阴坡对各个措施的响应最强烈,截干及其组合措施对半阳半阴坡幼树生长的促进作用最明显;截干及其组合措施适用于旱塬丘陵区杜仲造林。

Eucommia ulmoides has a strong ability to germinate new branches and short cutting can promote shooting and development of new branches.The research compared the afforestation effect of Eucommia ulmoides through stumping and other combination measures in the hilly area of the dry land.The experimental results showed that stumping combining with other measures can improve the survival rate of Eucommia ulmoides afforestation,and have a good promotion effect on the later growth of trees,in which stumping plays a leading role.The response and effect of interception and its combination measures are different in different slope directions.From the perspective of survival rate,the response of shady slope to each measure is the strongest,but from the perspective of later development trend,the rising range of half sunny and half shady slope is larger.The results show that stumping and its combination measures are especially suitable for afforestation in the dry hilly plateau area.