橡胶树品种云研77-2阴坡和阳坡长势对比分析

Comparative Analysis of Rubber Tree Variety ‘Yunyan 77-2’ Growth on Shady and Sunny Slopes

以云南省热带作物科学研究所环境友好型生态胶园试验基地为调查点,设置不同坡向(阴坡、阳坡)对橡胶树品种云研77-2进行长势对比分析。结果表明,阳坡橡胶树的存株率要高于阴坡,存株率高达98.67%。阳坡的平均茎围要显著高于阴坡,截止2018年底阳坡的平均茎围已达29.52 cm。阳坡的年均茎围生长量定植前3年要显著高于阴坡,但到第4年的年均茎围生长量差异性不显著。总体而言,橡胶树品种云研77-2在阳坡的长势要优于阴坡。

The growths were comparatively analyzed for rubber tree variety‘Yunyan 77-2’at difference slope aspects(shady and sunny slope)in the experimental base of environment-friendly rubber plantation of Yunnan Institute of Tropical Crops.The results showed the survival rate of rubber trees was 98.67%on sunny slope,higher than that on shady slope.The average circumference of stem was 29.52 cm on sunny slope,significantly higher than that on shady slope by the end of 2018.In the first three years,the annual average growth of stem circumference was significantly higher on sunny slope than that on shady slope,but no significant difference in the fourth year.In general,‘Yunyan 77-2’grew better on sunny slope than that on shady slope.