摘要
选取典型日光温室,通过一年两季田间小区试验,研究生物黑炭不同用量对设施土壤理化性质及蔬菜产量的影响,以期为生物黑炭在设施土壤中合理运用提供参考。结果表明,设施土壤施用生物黑炭与习惯处理相比,能显著降低土壤容重2.65%~15.73%,提高土壤CEC 1.03%~5.46%,提高土壤有机碳含量7.28%~24.95%,增加土壤速效钾含量19.06%~168.5%,施用量越大效果越明显;施用生物黑炭也增加了土壤水解氮和速效磷含量,但与习惯处理相比差异不显著。生物黑炭本身pH较高,但经过蔬菜整个生长季后,对土壤pH影响不大;生物黑炭矿物质含量较高,增加土壤养分的同时也提高了土壤全盐含量。低量生物黑炭对蔬菜产量影响不大或有提高作用,但高量生物黑炭会造成蔬菜减产,因此,设施土壤生物黑炭施用量不宜过高。
A field plot experiment was conducted to study the effect of biochar on vegetable yields and the soil physical and chemical properties in greenhouse. The results showed that biochar significantly reduced soil bulk density from 2.65% to 15.73%, improved soil CEC from 1.03% to 5.46%, increased soil organic carbon from 7.28% to 24.95%, and increased soil available potassium from 19.06% to 168.5%, compared with general treatment. The contents of soil hydrolysis nitrogen and available phosphorus were also increased, but the differences were not significant. Biochar had little effect on soil pH, but significantly increased soil total salt content. The low amount of bioclaar had little effect on vegetable yields or improved the yields, but with increasing usage, the yields tent to downward. Therefore, the application amount of biochar should not be too high in greenhouse soil.
出处
《中国农学通报》
CSCD
2013年第31期174-178,共5页
Chinese Agricultural Science Bulletin
基金
天津市农业科技成果转化与推广项目"农业废弃物转化生态碳关键技术应用示范"(201102070)
国家科技支撑计划"果树蔬菜高效施肥技术模式研究"(2008BADA4B05)
关键词
生物黑炭
日光温室
土壤理化性质
产量
biochar
greenhouse
soil physical and chemical properties
yields
作者简介
第一作者简介：潘洁，女，1968年出生，天津人，副研究员，主要从事农业废弃物资源化利用研究。通信地址：300192天津市南开区白堤路268号资环所，Tel：022-27950692，E—mail：panjie123@yahoo．cn。
