园林绿化废弃物堆肥用作青菜育苗基质的效果研究

Effects of Green Waste Compost as the Substrate for Growing Brassica Chinensis Seedlings

园林绿化废弃物是城市有机固体垃圾的重要组成,堆肥处理是其资源化利用的主要途径之一.以园林绿化废弃物为主,添加适当比例茶叶渣和猪粪进行混合好氧堆肥,利用堆肥制备育苗基质,比较堆肥、园土和草炭3种基质的青菜种子育苗效果.试验结果显示:在调节供氧情况下,堆体能够迅速升温,并且维持5 d以上高温期,28 d后堆肥达到腐熟要求;利用腐熟堆肥制备育苗基质,其基本理化性质符合蔬菜育苗基质行业标准;堆肥基质的青菜种子出苗率和菜苗长势等指标均显著优于园土,接近草炭的育苗效果.

Green waste is one of the most important parts of organic solid waste in city. And compost treatment is one of the dominant methods for its resource utilization. In this study,the mixed compost is performed to prepare seeding substrate,using green wastes as main materials. And the Brassica chinensis seeding effects of compost,garden soil,and turf are compared. The results show that the green waste composted with appropriate proportion of tea-leaves and manure can heat up fast and keep high temperature for over 5 days,when their initial C： N ratio and moisture contents are adjusted well. And the physicochemical properties of the product in this present study are according with the standard of vegetable seeding substrate. The emergence rate by plug seeding and the Brassica chinensis growth using green waste compost product are all prior to those using garden soil,however,approach to the seeding results by turf.