华北农学报Issue(2)：232-238,7.DOI:10.7668/hbnxb.2015.02.039
水肥管理及秸秆还田对设施菜田土壤钾素淋洗的影响
Effect of Irrigation,Fertilization and Straw Incorporation on Soil Potassium Leaching in Vegetable Greenhouse
摘要
Abstract
Excessive inputs of water and fertilizers under conventional greenhouse vegetable production have re-sulted in waste of potassium( K)resource and decrease of fruit quality. A field experiment was conducted in a greenhouse tomato double-cropping system to monitor the annual leaching dynamic of K in different soil depth and investigate the effects of management modes of water and fertilizer,and straw incorporation on K leaching. Results showed that K surplus was 394 kg/ha per season in fertigation treatment,which was much lower than that in conven-tional management( application of fertilizer with flooding irrigation). Compared to conventional management,fertiga-tion decreased the accumulation of available K in the 0 -60 cm soil layer and the leaching of K. Mean seasonal K leaching were 15. 9,4. 2 kg/ha under fertigation system,while that were 26. 9,16. 9 kg/ha under conventional man-agement system in 50,90 cm soil depth,respectively. Excessive inputs of water and fertilizers in conventional manage-ment system significantly contribute to the leaching of K. Straw incorporation decreased the content of soil available potassium in surface soil and increased the leaching of K in conventional management system.关键词
漫灌/滴灌/秸秆还田/钾素淋洗/设施菜田Key words
Flooding irrigation/Drip irrigation/Straw incorporation/Potassium leaching/Vegetable greenhouse分类
农业科技引用本文复制引用
陈硕,严正娟,樊兆博,陈清,李志芳..水肥管理及秸秆还田对设施菜田土壤钾素淋洗的影响[J].华北农学报,2015,(2):232-238,7.基金项目
现代农业产业技术体系北京市果类蔬菜创新团队项目 （）
