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研究了杉木根桩在分解过程中酚类物质的释放规律及其化感效应 .结果表明 ,随着分解程度的加深 ,根桩中酚类物质的含量减少 .根桩中酚类物质含量的梯度为根系 >心桩 >边桩 ;根桩在分解过程中酚类物质向外释放并会在土壤中积累 ,根桩周围土壤中酚类物质含量高于非根桩周围土壤 .盆栽试验说明酚类物质会影响杉木种子的萌芽率 .将田间调查的杉木树高、地径与根桩密度进行相关分析证明杉木根桩保留在造林地上 ,不利于下一代杉木的生长 .建议改革杉木人工林的传统作业方式 ,造林前将根桩从造林地中清除
The release of phenolic compounds and its allelopathic effect during the decomposition of Chinese fir root stumps were studied.The results showed that the content of phenolic compounds in the root piles decreased with the deepening of decomposition.The gradient of phenolic content The results showed that the content of phenols in the soil around the root piles was higher than that in the soil around the non-root piles. The pot experiment indicated that the phenols Material will affect the germination rate of Chinese fir seedlings.Correlation analysis of field height, root diameter and root pile density of Chinese fir prove that the Chinese fir root pile is retained in the afforestation land, which is unfavorable to the growth of the next generation of Chinese fir. Method of operation, before planting the root pile from the afforestation in the clear