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对宜溧山区和宁镇丘陵区毛竹笋材两用林定点观测研究表明 :(1)良好的林分结构是竹林丰产的关键。以产笋为主、产竹为辅的毛竹笋材两用林丰产结构为每公顷立竹 2 70 0～ 330 0支 ,胸径>9 0cm ,年龄组成应保留Ⅰ～Ⅲ度竹 ,各龄级比例为 1∶1∶1,竹林产量 (竹材、竹笋 )高。以产竹为主、产笋为辅的毛竹材笋两用林丰产结构为每公顷立竹 2 70 0～ 36 0 0支 ,胸径 9 0cm ,年龄组成应保留Ⅰ～Ⅳ度竹 ,各龄级比例为 3∶3∶3∶1,竹材产量较高。 (2 )培育毛竹笋材两用林应改大小年竹林为花年竹林 ,花年竹林的产量增产 13%以上。 (3)培育毛竹笋材两用林 ,需提高竹林的经营管理(松土、施肥等 )水平 ,才能保证竹林 (笋、材 )的持续丰产高效
The study on the afforestation of the bamboo plantation for both Moso bamboo shoots in Yili Mountainous Area and Ningxia Hilly Area showed that: (1) The good stand structure is the key to the high yield bamboo forest. The high yield structure of bamboo forest with bamboo shoots supplemented with bamboo was 2 70 0 ~ 330 0 per hectare with DBH> 90 cm. The age composition should be Ⅰ ~ Ⅲ degree bamboo, all ages The ratio of 1: 1: 1, bamboo yield (bamboo, bamboo shoots) high. Bamboo-based bamboo shoots, supplemented by bamboo shoots of bamboo forest dual-use high-yield structure of bamboo stands per hectare stands 2 70 0 ~ 36 0 0, DBH 9 0cm, age composition should be retained Ⅰ ~ Ⅳ degrees bamboo, age classes The ratio of 3: 3: 3: 1, bamboo yield higher. (2) Cultivation of bamboo shoots dual-use forest timber should be changed Year of the year bamboo is spent in the years, the annual output of bamboo increased by 13% or more. (3) To cultivate the bamboo plantation bamboo dual-purpose forest, it is necessary to improve the operation and management of bamboo forests (soil preparation, fertilization, etc.) in order to ensure the continuous high yield and high efficiency of the bamboo forest (bamboo shoots and timber)