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对长江流域地区常见的毛竹、刚竹、淡竹、桂竹、紫竹、哺鸣竹、孝顺竹等12种竹材,进行了pH值和缓冲容量测定和分析。结果表明:12种竹材pH值为5.53～6.04,碱缓冲容量为0.300～0.818mmol,酸缓冲容量为0.038～0.116mmol;竹龄增加,毛竹碱缓冲容量降低,酸缓冲容量上升;pH值和酸缓冲容量沿毛竹竹杆高度逐渐降低;竹肉pH值和缓冲容量最大,竹簧次之,竹青最小;随毛竹所占比例的增加,毛竹意杨混合材的酸碱缓冲容量呈比例增大,pH值呈下降趋势,但下降幅度逐渐变小。
Phyllostachys pubescens, Phyllostachys pubescens, Phyllostachys pubescens, Phyllostachys pubescens, Phyllostachys praecox, Phyllostachys praecox, Phyllostachys pubescens, were selected to study the pH value and buffer capacity of bamboo in the Yangtze River Basin. The results showed that: the pH value of 12 kinds of bamboo was 5.53 ~ 6.04, the alkali buffer capacity was 0.300 ~ 0.818mmol, the acid buffer capacity was 0.038 ~ 0.116mmol; the bamboo age increased, the bamboo buffer capacity decreased and the acid buffer capacity increased; The buffer capacity decreased gradually along the height of bamboo pole. The pH value and buffer capacity of bamboo were the highest, followed by bamboo spring, and the bamboo was the smallest. With the proportion of bamboo increasing, the ratio of acid- , the pH value showed a downward trend, but the decrease rate gradually decreased.