金佛山方竹不同密度人工林笋产量研究  

Shoot Yields of Chimonobambusa utilis Plantation at Different Densities

作　　者：张喜 龙志永 许才万 曾克勇 陈武 吴廷亮 刘成敏 

机构地区：[1]贵州省林业科学研究院,贵阳550011 [2]贵州省正安县林业局,正安563400

出　　处：《世界竹藤通讯》2013年第6期16-20,共5页World Bamboo and Rattan

基　　金：中央财政林业科技推广示范资金其它推广示范项目"金佛山方竹低产笋用林改造技术示范[2010-06]"资助

摘　　要：在其它经营措施相同条件下，分析了10年生金佛山方竹低产人工林中l500～2500株／0．07hm2（D1）和2500～3500株／0．07hm2（D2）2个密度等级的笋产量变化。4年改造期内，金佛山方竹人工林毛笋和净笋产量逐年增加，D1密度等级比D2密度级的毛笋和净产量高，部分不同密度等级间和同密度等级不同年度间的毛笋和净笋产量差异显著。毛笋和净笋产量的线性模型和幂函数模型相关性显著。毛笋产量和净笋产量同竹林平均地径和高度以及整齐度的正相关达显著水平，同密度和均匀度呈负相关，其中密度的负相关达显著水平，多元回归模型的相关性显著。毛笋和净笋产量同0．0～2．5cm间的径级株数呈负相关，同2．6～5．0cm间的径级株数呈正相关，同部分径级株数的相关性达显著水平。竹林中大径级株数越多，毛笋和净笋产量越高。Under the same management conditions, the yield change of shoots of the 10-year-old low-yield Chimonobambusa utilis plantation was analyzed at the two density levels, i.e., 1 500-2 500 culms/0.07 ha （D1） and 2 500-3 500 culms/0.07 ha （D2）. During the low-yield plantation improvement period that lasted 4 years, the total shoot-yields and the net shoot-yields overall increased year by year, with those at D1 higher than at D2. The total shoot-yields and the net shoot-yields also showed significant differences between the different densities as well as between different years within the same density. The linear model of the total shoot-yields and the net shoot-yields was significantly correlated with the power function model. The total shoot-yields and the net shoot-yields had significantly positive correlations with average diameter at ground and at height and uniformity as well, and showed negative correlation with the density and evenness while the correlation with density came to be significantly negative and the correlation with multi-regression model was significant. The total shoot-yields and the net shoot-yields were negatively correlated with the culms at the diameter level of 0.0 -2.5 cm, and positively correlated with the culms at the diameter level of 2.6-5.0 cm while the correlation with the culms at the certain diameter level came to be significant. The more large diameter culms in plantation, the higher the total yields and the net yields of bamboo shoot would be.

关 键 词：金佛山方竹 低产人工林 密度等级 竹笋产量 

分 类 号：S795[农业科学—林木遗传育种]