林下复合种植钩藤试验效果分析

目的]研究林下复合种植钩藤的效果,以期实现本地化、规模化、标准化种植。方法]对钩藤在不同杜仲林分郁闭度的林药复合种植与不同抚育措施经营效果开展对比试验。结果]林分郁闭度在0.4~0.6,林下种植钩藤的成活率、保存率高,且产量最高;郁闭度0.4~0.6林分,连续2年单位面积产量比郁闭度0.4以下林分的单位面积产量增长4.2倍、7.6倍,比郁闭度0.6以上的单位面积产量增长2.9倍、4.6倍;实施定干、短截措施,产量分别是对照的3.4倍、3.6倍;实施定干、短截、打顶措施,产量分别是对照的4.2倍、1.4倍。结论]杜仲林下种植钩藤,林分郁闭度为0.4~0.6,生长势好、产量高,是种植钩藤最适宜的林分郁闭度;钩藤定植后,植株长至30cm高时定干,而后保留分茎数3~4株,待植株长至60 cm高时短截,保留分茎数3~4株,直到植株长至150 cm高时,再实施打顶,可极大促进钩藤分侧枝抽发,增加商品枝数量,大幅度提高产量。

Ana lysis on Compound Planting of Uncaria rhynchophylla under Forest

Objective] The aim was to study compound planting of Uncaria rhynchophylla under forest, to realize localization, large scale and standardization planting. Method] The comparison tests on Uncaria rhynchophylla compound planting in different canopy densities of Eu-commia ulmoides and management in different tending measures were conducted.Result] When the woods density was up to 0.4-0.6, the survival rate and conservation rate of Uncaria rhynchophylla was the highest;In successive 2 years, the per unit yield grew by 4.2, 7.6 times compared with the woods density under 0.4, grew by 2.9, 4.6 times compared with the woods density above 0.6; With the trunk trimmed, short cutted to a certain height, the production was 3.4, 3.6 times higher than the control; With the trunk trimmed, short cutted to a certain height, apical dominance removed, the production was 4.2, 14. times higher than the control. Conclusion] When Uncaria rhynchophly la compound planting with Eucom mia ulmoide s, the growth power, production reached the highest level with the woods density reaches 0.4-0. 6, which is the best condition for Uncaria rhynchophylla;After planting of Uncaria rhynchophylla, the trunk trimmed when the height up to 30 cm, then retain 3-4 stems, when the height up to 60 cm, short cutted to a certain height, also retain 3-4 stems, when the height up to 150 cm, removing apical dominance, which can promote lateral shoots, increase the quantities of branches and the production greatly.