›› 2014, Vol. 26 ›› Issue (3): 0-775778.

• 环境科学 •    

浙江省稻田土壤养分现状及演变趋

计小江,陈义,吴春艳,李超英,李艳,唐旭*   

  1. 浙江省农业科学院 环境资源与土壤肥料研究所,浙江 杭州 310021
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2014-05-25 发布日期:2014-05-25

Current status and evolution trends of soil nutrients in the paddy soils in Zhejiang Province

JI Xiaojiang;CHEN Yi;WU Chunyan;LI Chaoying;LI Yan;TANG Xu*   

  1. Institute of Environment, Resource, Soil and Fertilizer, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
  • Received:1900-01-01 Revised:1900-01-01 Online:2014-05-25 Published:2014-05-25

摘要:


摘要: 通过对2009年浙江省260个水稻土养分含量的分析,并结合第二次土壤普查时期土壤养分资料,探讨浙江省稻田土壤养分的变化规律。结果表明,经过连续25年种植,浙江稻田土壤pH明显下降,稻田在pH值551~650所占的比例由1984年的593%下降到2009年的223%。有机质同期降低了139%。土壤全氮整体水平较高,变化不明显。有效磷含量大幅上升,比1984年提高了1583%,尤其是>200 mg · kg-1的稻田所占的比例由1984年的53%上升到2009年的250%,约为25年前的5倍,但同期速效钾含量却降低了348%,稻田土壤缺钾现象十分普遍。

关键词: 水稻土, 土壤养分, 浙江省

Abstract:

The nutrient changes of 260 paddy soils sampled from Zhejiang province in 2009 were studied based on the soil nutrient data obtained from the Second National Soil Survey. The results showed that the value of soil pH decreased obviously after 25 years of continuous cropping. The ratio of paddy field at pH value of 551 to 650 decreased from 593% in 1984 to 223% in 2009. Moreover, the mean value of soil organic matter was decreased by 139%. However, the level of soil total nitrogen was higher. The content of availableP markedly increased, especially the ratio of paddy field with availableP content > 200 mg· kg-1 increased from 53% in 1984 to 250% in 2009. The mean value of availableK was decreased by 348%. The Kdeficiency of paddy fields is still very common in Zhejiang province.

Key words: paddy soil, soil nutrient, dynamic change, Zhejiang Province