坡位和林下间作对青钱柳人工幼林生长的影响

Effects of different slope positions and intercropping under forest on growth of Cyclocarya paliurus young plantation

为给培育优质青钱柳人工林提供依据,以青钱柳人工幼林为研究对象,测定不同坡位和下坡位林下间作青钱柳的地径与苗高,研究坡位和间作对青钱柳生长的影响。结果表明,不同坡位对青钱柳人工幼林的地径和苗高生长有显著影响。上坡位的地径均值为0.90 cm,苗高均值为0.92 m;中坡位的地径均值为1.22 cm,苗高均值为1.19 m;下坡位的地径均值为1.31 cm,苗高均值为1.3 m。下坡位生长情况最好,中坡位次之,上坡位最差。林下间作的青钱柳各生长指标均超过了未间作的青钱柳,地径均值增加了72%,苗高均值增加了5%。

In order to provide a basis for cultivating high quality plantation of Cyclocarya paliurus,taking young C.paliurus plantations as research objects,ground diameters and seedling heights of C.paliurus plantation intercropped under different slope positions and downhill positions were measured,and effects of slope position and intercropping on growth of C.paliurus were studied.The results showed that different slope positions had significant effects on ground diameter and seedling height of young C.paliurus plantation.At upslope position,mean ground diameter was 0.90cm and mean seedling height was 0.92m;at middle slope position,mean ground diameter was 1.22cm and mean seedling height was1.19m;at downhill position,mean ground diameter was 1.31cm and mean seedling height was1.3m.Growth status was the best at the downhill growth,it was the second at the middle slope,and it was the worst at the downhill.The growth indexes of C.paliurus intercropped under forest were higher than those of C.paliurus uncropped under the forest,the mean ground diameter was increased by 72%,and the mean seedling height was increased by 5%.