丛生竹笋材两用林丰产技术的研究

该研究在国内首次采用丛生竹主枝或次生枝大面积直接造林的技术,提高了造林成活率,降低了造林成本,解决了大面积营造丛生竹笋材两用林种源不足的难题,在造林、竹林管护中,采用合理密度,即对补植、施肥培土、科学采笋留竹等一系列营林管护措施,使竹林结构得到改进,生长条件得到改善,达到速生丰产的目的。采用这套技术,在广西合浦营造3000亩笋材两用林,造林当年新竹平均高242.7cm,最高362cm,平均地围6.4cm,最大11cm。第2年亩产鲜笋133kg,最高达245kg,第4年平均亩产910.1kg,最高达1050kg。以后年亩产鲜笋平均1000kg以上,亩产竹材1200kg左右而趋于稳定,效益显著。

STUDY ON HIGH-YIELD TECHNIQUE OF CLUSTER-GROWING BAMBOO FOR SHOOT AND TIMBER

Study on forestation technique with leader branch or second one of cluster-growing bamboo showed that it could increase survival rate of silviculture, decrease its cost, solve the problem of shortage of provenence for forestation of cluster-growing bamboo forest for shoot and timber. During forestation and management of the forest, the structure and growth condition could be improved if the measure of rational density applicated. In Hepu of Guangxi province, 3000 mu bamboo forest for shoot and timber planted v/ith the above method, new bamboo of the current year had 242.7 cm of average height, 6.4 cm of average basal perimeter, 133 kg/mu of average shoot output for the second year, 910.1kg/mu of average shoot output for the fouth year, then over 1000 kg/mu of shoot, 1200 kg/mu of bamboo were stable for the years followed.