不同修枝强度对橡胶树无性系茎围生长的影响  

Effects of Different Pruning Intensities on Stem Girth Growth of Hevea brasiliensis Clones

作　　者：张凤良 李小琴[1,2] 杨湉 赵祺[1,2] 毛常丽 吴裕 ZHANG Fengliang;LI Xiaoqin;YANG Tian;ZHAO Qi;MAO Changli;WU Yu(Yunnan Key Laboratory of Sustainable Utilization Research on Rubber Tree,Jinghong 666100,China;Yunnan Institute of Tropical Crops,Jinghong 666100,China)

机构地区：[1]云南省天然橡胶可持续利用研究重点实验室,云南景洪666100 [2]云南省热带作物科学研究所,云南景洪666100

出　　处：《热带农业科技》2024年第3期64-68,共5页Tropical Agricultural Science & Technology

基　　金：云南省热带作物科技创新体系建设专项资金项目(RF2023-2);云南省现代农业橡胶产业技术体系建设育种与繁育研究室(2023KJTX008-02)。

摘　　要：以3年生的4个橡胶树无性系为研究对象,采用3种不同处理,即未修枝(对照)、轻度修枝(修去一半侧枝)和重度修枝(修去全部侧枝),处理后连续4年观测橡胶树茎围生长量,分析不同修枝强度对橡胶树无性系生长的影响。结果表明,多数无性系经过修枝处理后的茎围净生长量明显比未修枝的较大,且在不同修枝处理间存在显著差异;187号和314号无性系重度修枝净生长量最大,未修枝的净生长量一直处于最低,且修枝处理间差异达显著水平;272号无性系轻度修枝的净生长量最大;585号无性系修枝对其净生长量影响差异不明显。不同修枝强度对橡胶树不同无性系茎围净生长量的影响表现出较大差异。Four 3-year old Hevea brasiliensis clones were taken as the research objects.Three different treatments were used,light pruning(half of the lateral branches removed)and heavy pruning(all lateral branches removed),with no pruning as control.The stem girth growth of 4 years after treatment was observed continuously,and the effects of different pruning intensities on the growth of Hevea clones were analyzed.The results showed that the net growth of stem girth of most clones after pruning was significantly faster than that without pruning,and there were significant differences among different pruning treatments.The net growth of Hevea clones No.187 and No.314 was the highest when all lateral branches were pruned,meanwhile the net growth of non-pruning treatment was the lowest,and the difference between pruning treatments was significant.However,the net growth of No.272 clones with half of the lateral branches removed was the largest.The net growth of No.585 clones was similar among different treatments,and the effect of pruning on its net growth was not obvious.In conclusion,different pruning intensity showed great difference to different clones of Hevea on the stem girth growth.

关 键 词：橡胶树 无性系 修枝 净生长量 

分 类 号：S794.106[农业科学—林木遗传育种]