毛竹笋竹两用林地下鞭系结构调控技术

Structure regulation and control on underground bamboo rhizome system of bamboo forest for shoot and wood

对毛竹笋竹两用林地下鞭系结构进行了8 a调控研究。结果表明:在冬笋、春笋、竹材的产量与对照产量持平的条件下,每公顷还能获得2 527 kg的鞭笋产量;地下鞭系中的岔鞭鞭径比主鞭鞭径小0.1 cm,但整体平均鞭径却增加了0.32 cm,且没有因多年的鞭系调控而变小;竹鞭的节间长度比对照增加0.31 cm;每条竹鞭主鞭生发岔鞭的条数平均增加2条;竹鞭的鞭段总长度、平均总条数也分别增加了545.0 cm和4.3支;分布在土层深度15 cm以内的竹鞭鞭段总长度增加18%、竹鞭条数增加10%。

Structure regulation and control on underground bamboo rhizome system of bamboo forest for shoot and wood were conducted for eight years. The results indicate that under the condition that winter shoot, spring shoot and bamboo wood output of Phyllostachys pubessens were equal to that of the control, in the test sample plot, the bamboo shoots output could reach 2 527 kg · hrn^-2 , the average diameter of rhizome increased 0. 32 cm, the regulation and control on underground bamboo rhizome system for years did not led a decrease of rhizome diameter, although ramose rhizome was smaller 0.1 cm than taproot; the stick length of rhizome increased 0, 31 cm, the ramose rhizome derived from taproot increased averagely 2 pieces, the total length and amount of rhizome were increased severally 545.0 cm and 4.3 pieces;while the rates of them within 15 cm depth of soil were 18% and 10%, compared with contrast.