北方农业学报 ›› 2019, Vol. 47 ›› Issue (6): 34-41.doi: 10.3969/j.issn.2096-1197.2019.06.06

• 土壤肥料·植物保护 • 上一篇    下一篇

施用有机肥对土默川平原盐碱土土壤盐分及养分特征的影响

张雅贞1,2,3, 李跃进1,3, 景宇鹏2, 李秀萍2, 史培2, 栗燕芳2, 卢旭东2, 连海飞2, 王庆蒙1,2,3   

  1. 1.内蒙古农业大学 草原与资源环境学院,内蒙古 呼和浩特 010011;
    2.内蒙古自治区农牧业科学院,内蒙古 呼和浩特 010031;
    3.内蒙古自治区土壤质量与养分资源重点实验室,内蒙古 呼和浩特 010011
  • 收稿日期:2019-10-30 发布日期:2020-01-19
  • 通讯作者: 李跃进(1960—),男,教授,硕士,博士生导师,主要从事盐渍化土壤资源利用研究工作。景宇鹏(1983—),男,副研究员,博士,主要从事盐渍化土壤资源利用与土壤培肥研究工作。
  • 作者简介:张雅贞(1993—),女,硕士研究生,研究方向为土壤改良。
  • 基金资助:
    内蒙古农牧业创新基金项目(2018CXJJNO3); 内蒙古自治区自然基金项目(2017MS0313); 国家自然科学基金项目(41501578); 内蒙古农牧业科学院青年创新基金项目(2018QNJJN10)

Effect of increasing amounts of organic fertilizer on the soil salinity and nutrient characteristics of saline-alkaline soil in Tumochuan Plain

ZHANG Yazhen1,2,3, LI Yuejin1,3, JING Yupeng2, LI Xiuping2, SHI Pei2, LI Yanfang2, LU Xudong2, LIAN Heifei2, WANG Qingmeng1,2,3   

  1. 1.College of Grassland,Resources and Enviroment,Inner Mongolia Agricultural University,Hohhot 010011,China;
    2.Inner Mongolia Academy of Agricultural and Animal Husbandry Sciences,Hohhot 010031,China;
    3.Inner Mongolia Key Laboratory of Soil Quality and Nutrient Resources,Hohhot 010011,China
  • Received:2019-10-30 Published:2020-01-19

摘要: 为探究不同有机肥施用量对土默川平原盐碱土土壤盐分及养分特征的影响,以内蒙古自治区农牧业科学院托克托科研基地盐碱土为研究对象,研究不同有机肥施用量对盐碱土土壤盐分、pH值、脱盐率、有机质、全氮、碱解氮、速效磷等指标的影响及其之间的相关性。结果表明:有机肥施用量分别为 36 t/hm2和 54 t/hm2 时土壤盐分和pH值降低的最为显著,土壤脱盐率分别为12.63%,11.77%;随有机肥施用量不断增加土壤有机质含量不断增大,土壤全氮、碱解氮、速效磷含量先增加后减少,其中有机肥施用量72 t/hm2对0~20 cm土层土壤有机质含量提高的最显著,较对照提高了35.40%~38.73%;有机肥施用量 54 t/hm2对0~20 cm土层土壤全氮、碱解氮、速效磷差异显著,分别较对照提高了20.62%~97.98%,16.81%~20.27%,57.50%~69.93%;施用有机肥通过影响土壤有机质、全氮等化学指标来影响土壤盐分和pH值,其中土壤pH值与有机质、全氮、碱解氮、速效磷呈显著或极显著负相关,土壤全盐与全氮、碱解氮、速效磷呈极显著负相关。

关键词: 有机肥, 土壤盐分, 土壤养分, 盐碱土, 土默川平原

Abstract: In order to explore the effects of different application rates of organic fertilizer on the salinity and nutrient characteristics of saline-alkali soil in Tumochuan Plain,the saline-alkali soil was studied in Togtoh Scientific Research Base of Inner Mongolia Academy of Agricultural and Animal Husbandry Sciences.The effects of different application rates of organic fertilizer on soil salinity,pH,desalination rate,organic matter,total nitrogen,alkali hydrolyzable nitrogen,and available phosphorus in saline-alkali soil,and their correlations were studied.The results showed that:when the application rate of organic fertilizer was 36 t/hm2 and 54 t/hm2,the soil salinity and pH decreased significantly.The desalination rates of soil were 12.63% and 11.77%,respectively.With the increase of the amount of organic fertilizer,the content of the soil organic matter increased,and the contents of the total nitrogen,the alkali hydrolyzable nitrogen and the available phosphorus increased at first and then decreased.Among them,the application rate of organic fertilizer 72 t/hm2 increased the content of the soil organic matter in 0-20 cm soil layer most significantly,which was 35.40%-38.73% higher than that of the control.There were significant differences in the total nitrogen,the alkali-hydrolyzable nitrogen and the available phosphorus in 0-20 cm soil layer treated with 54 t/hm2,which were 20.62%-97.98%,16.81%-20.27%,and 57.50%-69.93% higher than those of the control,respectively.The application of organic fertilizer affected the soil salinity and pH,by affecting the soil organic matter,the total nitrogen and other chemical indexes,in which the soil pH was significantly or very significantly negatively correlated with the organic matter,the total nitrogen,the alkali-hydrolyzable nitrogen and the available phosphorus.The soil total salt was significantly negatively correlated with the total nitrogen,the alkali hydrolyzable nitrogen and the available phosphorus.

Key words: Organic fertilizer, Soil salinity, Soil nutrients, Saline-alkali soil, Tumochuan Plain

中图分类号: 

  • S154