KOH溶液对麻竹竹蔸浸蚀效力的测定与分析  

Determination and Analysis of the Etching Effect of Potassium Hydroxide Solution on Dendrocalamus latiflorus Bamboo Stumps

作　　者：张丽[1] 赵博[2] 龙治坚[2] 王晓娟 徐刚[2] 王准[1] 胡尚连[2] 马光良 孙鹏[1] 林志强 ZHANG Li;ZHAO Bo;LONG Zhijian;WANG Xiaojuan;XU Gang;WANG Zhun;HU Shanglian;MA Guangliang;SUN Peng;LIN Zhiqiang(Sichuan Academy of Forestry,Chengdu 610081,China;Southwest University of Science and Technology,Mianyang 621010,China;Luzhou Academy of Forestry,Luzhou 646000,China)

机构地区：[1]四川省林业科学研究院,四川成都610081 [2]西南科技大学,四川绵阳621010 [3]泸州市林业科学研究院,四川泸州646000

出　　处：《四川林业科技》2022年第6期18-23,共6页Journal of Sichuan Forestry Science and Technology

基　　金：四川省财政专项(2020CZZX28);四川省财政专项(2021CZZX22);四川省科技计划项目(2021YFYZ0006)

摘　　要：麻竹老竹和笋株择伐后的竹蔸占据丛蔸生长空间,是形成笋用麻竹林低效的重要原因。文中对KOH溶液浸蚀竹蔸试验的分析表明:强碱溶液浸蚀使竹蔸内壁变软,薄壁细胞受损、维管束剥离坍塌,外壁结构及硬度改变有限,但使竹蔸个体生理灭活,有利于自然界微生物参与促腐。强碱浸蚀导致竹蔸木质素、纤维素、半纤维素和灰分发生显著变化,0.50 g·mL^(−1)KOH溶液为本试验较佳处理浓度。KOH溶液施放蔸腔,pH值可降至弱碱性,反应产物碳酸钾等均为环境友好型物质。Dendrocalamus latiflorus bamboo stumps occupied the stump space after selective cutting of old bamboos and bamboo shoots,which was an important reason for low efficiency of bamboo shoot forest.The test of bamboo stumps etching with potassium hydroxide solution showed that the erosion of strong alkali solution made the inner wall of the bamboo stump soften,the thin-walled cells were damaged,the vascular bundles were stripped and collapsed,and the structure and hardness of the outer wall were limited.The individual bamboo stump was physically inactivated,which was conducive to the participation of natural microorganisms in promoting decay.The strong alkali erosion resulted in significant changes in lignin,cellulose,hemicellulose and ash content of bamboo stumps,and 0.50 g/mL potassium hydroxide solution was the best treatment concentration in this experiment.When the stump chamber was treated with potassium hydroxide solution,the pH value decreased to weak alkalinity,and the potassium carbonates in the reactant were all environmentally friendly.

关 键 词：竹蔸 浸蚀 蚀腐 氢氧化钾 

分 类 号：S795.5[农业科学—林木遗传育种]