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以撑绿杂交竹(Bambusa pervariabilis×Dendrocalamopsis daii)和硬头黄竹(Bambusa rigida)为研究对象,探讨了两种丛生竹生物量分配及克隆生长特性。结果表明,硬头黄竹秆生物量比例显著高于撑绿杂交竹,枝和叶生物量比例显著低于撑绿杂交竹,硬头黄竹具有更高的养分同化效率。硬头黄竹与撑绿杂交竹的繁殖率无明显差异,但其退笋率显著低于撑绿杂交竹,表明硬头黄竹具有更高的繁殖效率。此外,与撑绿杂交竹相比,硬头黄竹的成竹根茎更长,资源开拓性更强。两种丛生竹的新竹生长与母竹数量、大小和年龄结构具显著相关性。硬头黄竹产生的竹笋质量高,具有较高的成竹率,生长策略类似K对策;撑绿杂交竹产生的竹笋数量多,但退笋率较高,类似r对策。硬头黄竹和撑绿杂交竹的成竹数(成竹胸径)与母竹数量(母竹胸径)间存在线性相关关系,可以用线性模型模拟。
The Bambusa pervariabilis × Dendrocalamopsis daii and Bambusa rigida were used to study the biomass allocation and clonal growth of two species of bamboo. The results showed that the biomass of hard yellow bamboo was significantly higher than that of green bamboo, and the biomass of branches and leaves was significantly lower than that of green bamboo, and the hardwood yellow bamboo had higher nutrient assimilation efficiency. Hard yellow bamboo and supporting green hybrid bamboo reproduction rate no significant difference, but the withdrawal rate was significantly lower bamboo green bamboo, the hard yellow bamboo has higher reproductive efficiency. In addition, compared with spongy hybrid bamboo, rhizomes of rhizomes grow longer and have more pioneering resources. There was a significant correlation between the growth of Himalayan bamboo and the number, size and age structure of the two bamboo species. Hard yellow bamboo shoots produce high quality bamboo shoots, with higher bamboo yield, growth strategies similar to the K countermeasures; bamboo green bamboo hybrid bamboo produced a large number of bamboo shoots, but higher rates, similar to the r countermeasures. There is a linear relationship between the number of bamboo (diameter at breast height) and the number of mother bamboo (bamboo diameter at breast height) of hard bamboo and green bamboo, which can be simulated by linear model.