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摘要: |
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用硫酸铜与二癸基二甲基氯化铵（DDAC）复配对折断木进行顶端施药，模拟1-3年降雨量雨水的冲刷，检测木材中主要活性成份的载药量，结果表明铜随取样深度增大，试样总载药量、DDAC与铜的含量都呈下降趋势；降雨量对试样中铜含量、DDAC含量、总载药量变化影响不显著。经5%浓度的防腐剂施药使腐朽菌不能在木材顶端1cm 生长，并在2 cm -3cm 范围内减缓生长，在木材顶端形成防护层，可在3年以上时间内避免和减缓腐朽的发生，可有效减少林农损失。5%药剂总成本约1元/株。
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关键词:
木材防腐 冰雪灾害 降雨量
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DOI：
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基金项目：广东省科技计划项目“粤北森林冰雪灾害评估及灾后复产技术研究与示范”（2008A020100013） |
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Rainfall Washing Simulation Test of Broken Tree Treated with Preservative |
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Abstract: |
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Preservative made of copper sulphate and DDAC was applied to the peak of broken wood and washed by water simulating 1~3 years’ rainfall. Retentions of main active ingredients were detected. The results showed that with the increasing of depth of sampling, the total retention level, DDAC and copper content all showed a downward current. In 1-3 year rainfall, copper content, DDAC content and total retention were not obvious with the volume change of rainfall. Applying of preservative with 5% concentration to the peak of broken tree costed approximately 1yuan per tree, which can avoid growth of fungi in 1cm from peak, and slow down growth of fungi in the range of 2-3cm from peak. Protective layer formed in the top of wood can avoid and slowed down the occurrence of decay in more than three years of time. Adopting this technique, the loss of farmers can be effectively reduced.
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Key words:
wood preservation, snowstorm, rainfall
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