华北农学报 ›› 2015, Vol. 30 ›› Issue (2): 232-238. doi: 10.7668/hbnxb.2015.02.039

所属专题: 土壤肥料

• 论文 • 上一篇    

水肥管理及秸秆还田对设施菜田土壤钾素淋洗的影响

陈硕1, 严正娟2, 樊兆博2, 陈清2, 李志芳1   

  1. 1. 中国农业大学 农学与生物技术学院, 北京 100193;
    2. 中国农业大学 资源与环境学院, 北京 100193
  • 收稿日期:2015-01-17 出版日期:2015-04-28
  • 通讯作者: 陈清(1968-),男,山东威海人,教授,博士,博士生导师,主要从事经济作物养分管理、养分循环及土壤质量研究。
  • 作者简介:陈硕(1989-),女,内蒙古赤峰人,在读硕士,主要从事蔬菜养分管理研究。
  • 基金资助:
    现代农业产业技术体系北京市果类蔬菜创新团队项目

Effect of Irrigation,Fertilization and Straw Incorporation on Soil Potassium Leaching in Vegetable Greenhouse

CHEN Shuo1, YAN Zheng-juan2, FAN Zhao-bo2, CHEN Qing2, LI Zhi-fang1   

  1. 1. College of Agriculture and Biotechnology, China Agricultural University, Beijing 100193, China;
    2. College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China
  • Received:2015-01-17 Published:2015-04-28

摘要: 针对设施蔬菜传统水肥管理模式中钾素过量投入、因缺镁造成果类蔬菜品质下降等问题,以一年两季设施番茄为研究对象,通过对不同土壤深度钾素淋洗的周年动态监测,研究了不同水肥管理模式及秸秆还田对设施菜田土壤钾素淋洗的影响。结果表明,滴灌施肥处理下菜田平均每季钾素盈余394 kg/hm2,明显低于漫灌施肥处理;滴灌施肥菜田0~60 cm土层土壤速效钾累积程度小于漫灌施肥,且显著降低了钾素淋洗量,50,90 cm处平均每季淋洗量分别为15.9,4.2 kg/hm2,而漫灌施肥体系则分别达到26.9,16.9 kg/hm2,漫灌体系过量灌溉和施肥是导致钾素大量淋洗的根本原因;漫灌体系下添加秸秆后有降低表层土壤速效钾积累的趋势,增加了土壤钾素淋洗。

关键词: 漫灌, 滴灌, 秸秆还田, 钾素淋洗, 设施菜田

Abstract: Excessive inputs of water and fertilizers under conventional greenhouse vegetable production have resulted 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 conventional management (application of fertilizer with flooding irrigation).Compared to conventional management, fertigation 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 management system in 50, 90 cm soil depth, respectively.Excessive inputs of water and fertilizers in conventional management 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.

Key words: Flooding irrigation, Drip irrigation, Straw incorporation, Potassium leaching, Vegetable greenhouse

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引用本文

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, 30(2): 232-238. doi: 10.7668/hbnxb.2015.02.039.

CHEN Shuo, YAN Zheng-juan, FAN Zhao-bo, CHEN Qing, LI Zhi-fang. Effect of Irrigation,Fertilization and Straw Incorporation on Soil Potassium Leaching in Vegetable Greenhouse[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2015, 30(2): 232-238. doi: 10.7668/hbnxb.2015.02.039.

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