狭叶方竹陡坡耕地造林试验初报

Chimonobambusa angustifolia Afforestation Experiment on Steep Slope Arable Land: A Preliminary Report

为探索提高狭叶方竹陡坡耕地造林成活率的技术措施,确保在退耕还竹中成功应用,通过母竹类型、造竹时间、造竹密度选择和覆盖、混交树种等试验措施,对其成活率、发笋率、收益年限和景观效果的影响进行研究。结果表明,选取2~3年生母竹1丛2株以上,在3月上旬移栽覆盖秸秆处理狭叶方竹造林,成活率、发笋率达92%。造竹合理密度为1667丛/hm^2时,第4年即进入收益年限。狭叶方竹母竹移栽有地上竹竿干枯后竹篼鞭芽成活发笋现象,凡成活的竹篼鞭芽均能发笋。混交乔木树种在初期因冠幅小、郁闭度低而对狭叶方竹生长未有明显影响。乔木树种选择银杏和香樟配植景观效果明显。

To explore technical measures for high afforesting survival rate of Chimonobambusa angustifolia on steep slope arable land, and ensure the measures＇ successful application in returning farmland to bamboo, we studied the effects of parent bamboo type, afforesting bamboo time, afforesting bamboo density, covering measures and mixed tree species etc. on bamboo survival rate, bamboo shooting rate, yield year and landscape effect. The results showed that, by transplanting 2-3 year old bamboo clump of more than 2 plants with mulched straw in early March, the afforesting survival rate and shoot rate reached 92%. When bambooafforestation density was 1667 clump/hm^2, the fourth year could be the yield year. Transplanting parent bamboopole on the ground could dry, but the bamboo shoots buds could survive and all sprout. The early stage ofmixed tree species had small crown breadth and low canopy density and did not affect the growth of C.angustifolia obviously. The gingko and camphor trees had obvious effect on the landscape of C. angustifolia.