南京林业大学学报（自然科学版）2024，Vol.48Issue(2)：79-85,7.DOI:10.12302/j.issn.1000-2006.202209048
配比施肥对带状采伐毛竹林立竹数量和质量恢复的影响
Effects of fertilization application on quantity and quality recovery of restoring strip-harvested moso(Phyllostachys edulis)bamboo forests
摘要
Abstract
[Objective]Moso bamboo(Phyllostachys edulis)is an integral part of China's forest resources,and strip harvesting is an efficient and mechanizable novel bamboo forest management mode.This study aimed to investigate the promotion effect of proportional fertilization on the post-harvesting recovery of forest stands and select the most suitable fertilizer ratio,providing a reference for the efficient and sustainable management of moso bamboo forests.[Method]In the state-owned Yixing Forest Farm,in selecting the area with favorable site conditions,we selected a pure stand of old-growth moso bamboo and set up a fertilization experiment with three fertilization mass ratios of N to P2O5 to K2O is 2.0∶1.0∶1.0,3.5∶1.0∶2.0 and 5.0∶1.0∶2.5(F1,F2 and F3,respectively)after strip harvesting with an 8-m bandwidth.The main productivity indicators of the forest land[such as the number of shoots,percentage of mature bamboo trees,diameter at breast height(DBH)characteristics of the new bamboo]were investigated and explored the response mechanism of the quality and quantity characteristics of standing bamboo to fertilization during the restoration process of strip-cutting moso bamboo forests through data comparison,variance analysis,linear relationship fitting,and other pertinent statistical methods.[Result](1)Fertilization could significantly induced new shoot emergence,but the phenomenon of shoot retreat within the stand was evident,the stand splitting rate was significantly reduced,and the stand density of the fertilization treatment did not significantly different from that of the control treatment,indicated that the quantitative characteristics of the stand returned to the pre-harvesting level;(2)The F2 and F3 treatments were able to significantly increase the average DBH of the new bamboo and the proportion of medium-and large-diameter bamboo trees.The diameter at breast height-height(DBH-H)scatter relationship of the new bamboo in the F2 treatment was close to that of the traditional management model,indicating that the qualitative characteristics of the stand were significantly improved.[Conclusion]The quantitative and qualitative characteristics of moso bamboo stands recovered by strip harvesting varied in response to different fertilizer ratios,but the quantitative characteristics could be restored to pre-harvesting levels,and the quality characteristics could be significantly improved by high N and K fertilizer ratios,with the most profound effect being induced by an mass ratio of N to P2O5 to K2O is 3.5∶1.0∶2.0.关键词
毛竹/带状采伐/配比施肥/质量恢复/立竹密度Key words
moso bamboo(Phyllostachys edulis)/strip harvesting/fertilization mass ratio/quality recovery/standing bamboo's density分类
农业科技引用本文复制引用
李承基,官凤英,周潇,张璇,郑亚雄..配比施肥对带状采伐毛竹林立竹数量和质量恢复的影响[J].南京林业大学学报（自然科学版）,2024,48(2):79-85,7.基金项目
国家重点研发计划(2023YFD2201203). （2023YFD2201203）
