中国农学通报2025，Vol.41Issue(32)：46-53,8.
农林废弃物堆肥渗沥液替代部分化肥对园林苗木长势和土壤养分的影响
Effects of Replacing Partial Chemical Fertilizers with Agricultural and Forestry Waste Compost Leachate on Growth of Garden Seedlings and Soil Nutrients
摘要
Abstract
This study aims to explore the effects of compost leachate from agricultural and forestry wastes partially replacing chemical fertilizers on the growth of garden seedlings and soil nutrients,and to determine the best application ratio.The pot culture experiment was conducted with Michelia×alba and Melastoma candidum as the research objects.The treatments of 100%,75%,50%and 25%earthworm culture leachate(ECL)and green waste compost leachate(WCL)were set up,combined with 1/2 conventional compound fertilizer application,and the plant growth indicators and soil physical and chemical properties were compared and analyzed.The results showed that 100%,75%,50%and 25%of ECL could increase the root dry weight of Michelia×alba,and the biomass accumulation effect of Michelia×alba root was the best under 100%ECL treatment;while 100%and 75%of WCL treatment led to a significant decline in the growth of Michelia×alba and Melastoma candidum.Compared with 1/2 conventional fertilization,the contents of hydrolytic nitrogen,available phosphorus and available potassium in the soil after 100%WCL treatment increased by 62.0%,28.2%and 91.8%respectively,indicating that it could effectively improve the level of available nutrients in the soil.Principal component analysis(PCA)further revealed that the ECL treatment group had a positive promoting effect on the growth of Michelia×alba,while the WCL treatment group had an inhibitory effect on the growth of Melastoma candidum.The study suggests that 100%ECL can be used as a fertilizer alternative to promote the accumulation of root biomass of Michelia×alba and Melastoma candidum and improve the growth of Michelia×alba.25%WCL has great application potential due to its cost-effectiveness and eco-friendliness.关键词
绿化废弃物堆肥渗沥液/蚯蚓养殖渗沥液/园林植物/白兰/蒂牡花/化肥替代/土壤养分Key words
green waste compost leachate/earthworm cultivation leachate/garden plants/Michelia×alba/Melastoma candidum/chemical fertilizer substitution/soil nutrients分类
农业科技引用本文复制引用
吴家龙,黄雅芸,梁春梅,阮燕珠,许昌超..农林废弃物堆肥渗沥液替代部分化肥对园林苗木长势和土壤养分的影响[J].中国农学通报,2025,41(32):46-53,8.基金项目
广州市科技计划项目"广州市生态园林科技协同创新中心"(202206010058) （202206010058）
广州市林业和园林局部门预算项目"珍贵树种培育与应用示范"(202307130200). （202307130200）
