毛竹笋用林地下竹鞭分布规律与竹笋个体发育的关系

毛竹笋用林地下竹鞭分布有一定的规律。对粗放、集约两类型竹林进行调查,结果表明:竹笋发育由浅层到深层递进,清明前发笋竹鞭适宜深度在土壤表层,清明后逐渐移向土壤下层。竹笋发育数量,以中层为最多,深层为最少;竹笋个体重,随竹鞭分布深度增加而逐步增大。但约在35cm以下竹鞭孕笋逐步减少,而竹笋深度增重率增大,两者过渡最佳交点,出现在鞭深35cm左右的地方。

Bamboo Rhizome Distribution and Bamboo Shoots Development of Moso Forest Producting Bamboo Shoots

The bamboo rhizome distribution of moso grove used for bamboo shoots production has a regular pattern. Two types of bamboo groves which are intensive management and extensive management respectively were investigated, and the results showed that the number of bamboo shoots increased from shallow layers to deep layers of soil. Before Pure Brightness, the suitable depth of the bamboo rhizome producing shoots located on the surface layer of soil, and later moved gradually down to the deep layer of soil. Large numbers of bamboo shoots distributed in the mid-layer of soil, the smallest in the deep layer. Individual weight of bamboo shoots increased with the depth of bamboo rhizome above 35 cm of soil horizon. Below this limit value bud bamboo shoots decreased gradually but the increment rate of weight of bamboo shoots increased. The best point of intersection between the bud bamboo shoots number of bamboo rhizome and the weight increment rate of bamboo shoots appeared on the 35 cm depth of soil horizon.