乳源木莲改建型母树林经营技术

Manglietia yuyuanensis Rebuilt Parent Stand Management Technology

探讨了利用乳源木莲现有林分改建母树林的主要经营技术,研究结果表明:乳源木莲母树林应选择背风向阳、立地条件较好的林地,乳源木莲所占比例较高、生长较好、林木开始分化的林分,经疏伐,留优去劣,能够选择出具有较好遗传品质的优良木,种子的遗传品质能够有一定程度的改良。经疏伐后保留密度750、900株.hm-2比较适宜。开心伞状形、稀疏圆柱形、自然圆柱形的结实量间差异均达到极显著水平,以开心伞状形为好。不同处理施肥后,2008—2010年总结实量分别达到1065、1084.5、1318.5、958.5 kg.hm-2,与对照比分别提高52.4%、55.2%、88.6%和37.1%,施肥可以提高乳源木莲的结实量。

The management technology of rebuilding Manglietia yuyuanensis parent stand with existing Manglietia yuyuanensis stand was discussed,research results showed that：Manglietia yuyuanensis should choose the sunny and leeward woodland site with better conditions,the Manglietia yuyuanensis proportion was higher,growth was better,by thinning,forest stands beginning to differentiate left the superior instead of the inferior,could choose the fine wood with good genetic quality,the genetic quality of seeds had a certain degree of improvement.After the thinning,retained densities of 900 trees/hm2,750 trees/hm2 were more appropriate.The seeding amount difference among the open-centred-umbrella-shaped,the thin-cylinder-shaped,and the natural-cylinder-shaped reached a significant level,the open-centred-umbrella-shaped seeding amount was good.After different fertilization treatment,the total seeding amount reached 1065 kg·hm-2,1084.5 kg·hm-2,1318.5 kg·hm-2,and 958.5 kg·hm-2,respectively during 2008-2010,they increased by 52.4%,55.2%,88.6% and 37.1% compared with the control,fertilization could increase the amount of Manglietia yuyuanensis.