摘要
【目的】滨海盐渍土存在的土壤盐分高、结构差、钠含量高、返盐频繁等问题,为促进沿海地区滩涂资源的高效开发和利用,探究一种专用的土壤调理剂对于滨海盐渍土的改良效果。【方法】以专用土壤调理剂“盐怕”(ZL201810961893.4)为试验材料,以滨海地区盐渍土为研究对象,通过室内模拟实验的方法,测定不同用量(0、3000、6000 kg hm^(-2))的“盐怕”处理下0~20 cm土层土壤基本理化性质及土壤酶活性,从而分析并评估该环境友好型的多功能土壤调理剂对滨海盐渍土的改良效果。【结果】土壤调理剂的施用能够降低土壤含盐量及pH,增加土壤碱解氮和速效钾含量,降低土壤Na^(+)离子含量,同时提升土壤中Ca^(2+)、Mg^(2+)和K^(+)含量,并使土壤蔗糖酶和脲酶活性提升,但超过某一用量范围后调理剂用量继续增加其效果提升不再明显。【结论】该专用的土壤调理剂可以有效且高效地改良滨海盐渍土,推荐调理剂施用量为3000 kg hm^(-2)。
[Objective]Coastal saline soil has such problems as high salinity,poor structure,high sodium content and frequent water-salt interaction.In order to promote the development and utilization of saline-alkali land resources in coastal areas,this paper mainly studies the improvement effect of a patented soil conditioner on coastal saline soil.[Method]The patented soil conditioner“Salt Fear”(ZL 201810961893.4)was used as the experimental material and coastal saline soil was used as the research object.Laboratory simulation experiments were carried out to study the physical and chemical properties of soil and soil enzyme activities in 0-20 cm soil layer treated with different amounts(0,3000,6000 kg hm^(−2))of“Salt Fear”,so as to analyze and evaluate the improvement effect of this environmentfriendly multifunctional soil conditioner on coastal saline land.[Result]The results showed that the application of“Salt Fear”could reduce soil salt content,pH value and toxic Na^(+) ion content,and increase the content of alkali hydrolyzed nitrogen and other available nutrients,as well as the contents of Ca^(2+),Mg^(2+) and K^(+).The activities of soil sucrase and soil urease were also improved.And the improvement effect did not significantly improve with the increase of the dosage of“Salt Fear”.[Conclusion]These results indicated that this patented soil amendment for saline soil can effectively and efficiently improve coastal saline soil,and by considering various factors,it is recommended to apply 3000 kg/hm^(2) of this amendment.
作者
邵天韵
燕潇
彭昊
贾秉志
李文平
傅鹏宵
徐聆溪
马占红
任莹飞
刘安鸿
隆小华
SHAO Tian-yun;YAN Xiao;PENG Hao;JIA Bing-zhi;LI Wen-ping;FU Peng-xiao;XU Ling-xi;MA Zhanhong;REN Ying-fei;LIU An-hong;LONG Xiao-hua(College of Resources and Environmental Sciences,Nanjing Agricultural University,Nanjing 210095,China;Jiangsu Coastal Ecological Science and Technology Development Co.LTD,Nanjing 211500,China;Jiangsu Fangyang Group Co.,LTD.,Lianyungang 222065,China;Inner Mongolia Academy of Agricultural&Animal Husbandry Sciences,Huhehaote 010031,China)
出处
《土壤通报》
CAS
CSCD
北大核心
2024年第4期1143-1150,共8页
Chinese Journal of Soil Science
基金
国家自然科学基金(32301433)
江苏省自然科学基金(BK20230987)
江苏省卓越博士后计划(2023ZB509)
江苏省沿海开发集团有限公司2022年科技揭榜挂帅研发项目(2022YHTDJB01)
徐圩新区土壤改良及绿化植物优选研究实施项目(001-QT900-ZX017)资助。
关键词
滨海盐渍土
土壤改良
土壤含盐量
土壤离子
土壤酶活性
Coastal saline-alkali land
Soil improvement
Soil salinity
Soil ions
Soil enzyme activity
