添加园林废弃物堆肥基质对栓皮栎容器苗生长的影响

Effect of green waste compost substrate on containerized Quercus variabilis seedling growth

以园林废弃物堆肥部分替代东北泥炭—珍珠岩混合基质中的东北泥炭,分析了添加园林废弃物堆肥对栓皮栎容器苗基质及苗木生长情况的影响。研究表明:添加堆肥降低了基质密度,改善了基质酸碱环境,提高了全氮含量,同时也造成了EC值的偏高;在高堆肥配比下,出苗率显著降低,但也能达到80%的生产指标;堆肥配比≤25%时,苗高、地径、高径比、主根长及根生物量等指标与对照之间无显著差异,且栓皮栎容器苗的茎根比有所降低。该试验条件下,栓皮栎容器苗基质的最佳比例配比为东北泥炭55%、珍珠岩20%、园林废弃物堆肥25%。

In this study,effects of cultivation medium of green waste compost on containerized seedling growth of Quercus variabilis were analyzed after the commonly-used northeast peat was replaced partially. The results showed that addition of the compost reduced matrix density,improved substrate p H value,increased total nitrogen content,and also resulted in a higher EC value. Under the high compost ratio,the Q. variablis emergence rate decreased significantly,but could reach80% of the production index. When compost ratio was less than or equal to 25%,there was no significant difference in the indexes of seedling height,ground diameter,the ratio of height to diameter,root length and root biomass between CK and control,but the ratio of root to stem of Q. variabilis seedlings decreased. Under the trial conditions,the optimum matrix of the cultivation medium for Q. variabilis seedlings was proportion for 55% northeast peat,20% perlite and garden 25% waste compost.