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中国农学通报 ›› 2022, Vol. 38 ›› Issue (5): 54-59.doi: 10.11924/j.issn.1000-6850.casb2021-0486

所属专题: 生物技术 耕地保护

• 资源·环境·生态·土壤·气象 • 上一篇    下一篇

2种土壤复合改良剂对滨海盐渍土的改良及肥力作用

韩晓芳1,2(), 田晓明1,2(), 杨永利1,2, 张敬智3, 张清1, 张凯1,2, 张涛1,2, 贾林1,2   

  1. 1天津泰达绿化集团有限公司,天津 300457
    2天津泰达盐碱地绿化研究中心有限公司,天津 300457
    3山东思远农业开发有限公司,山东寿光 262700
  • 收稿日期:2021-05-08 修回日期:2021-08-12 出版日期:2022-02-15 发布日期:2022-03-17
  • 通讯作者: 田晓明
  • 作者简介:韩晓芳,女,1986年出生,山西临汾人,高级工程师,博士,研究方向:生态修复。通信地址:300457 天津市滨海新区开发区睦宁路26号,Tel:022-25320959,E-mail: hanxiaofang63@163.com
  • 基金资助:
    天津市科技计划重点支撑项目“滨海重盐碱地区污染土壤生物-化学原位协同修复关键技术的研发”(19YFZCSF01090)

Two Soil Compound Amendments: Improvement and Fertility Effect on Coastal Saline Soil

HAN Xiaofang1,2(), TIAN Xiaoming1,2(), YANG Yongli1,2, ZHANG Jingzhi3, ZHANG Qing1, ZHANG Kai1,2, ZHANG Tao1,2, JIA Lin1,2   

  1. 1Tianjin Taida Greening Group Company Limited, Tianjin 300457
    2Teda Saline-alkaline Soil Greening Research Center, Tianjin 300457
    3Shandong Siyuan Agricultural Development Co., Ltd., Shouguang, Shandong 262700
  • Received:2021-05-08 Revised:2021-08-12 Online:2022-02-15 Published:2022-03-17
  • Contact: TIAN Xiaoming

摘要:

为研究2种土壤复合改良剂(由微生物菌剂和园林腐熟废弃物组成)对盐渍土的改良及肥力作用,本研究采用60天室内恒温(30℃)培养法,对不同处理的盐碱土理化性质进行研究。结果表明:园林腐熟物能够提高盐碱土电导率和土壤碱度,而在园林腐熟物基础上添加不同浓度的微生物菌剂对盐碱土电导率值和土壤碱度的影响不显著,表明2种复合改良剂对盐碱土的电导率和土壤碱度改良作用不显著;添加园林腐熟物以及2种复合改良剂均能提高盐碱土壤的全氮、碱解氮、速效磷以及有机质含量,其中A3复合改良剂提高幅度最大,效果最好;添加园林腐熟物以及两种复合改良剂都可以降低有效铁、有效锰、有效铜含量,增加有效锌的趋势,A复合改良剂作用显著,其中A1作用最好;从土壤细菌数量看,2种复合改良剂均能显著提高土壤细菌含量,其含量排序为A3>B2>A2>B1>A1、B3;土壤指标与细菌含量相关性分析表明,细菌含量与土壤全氮、速效磷、有机质呈极显著正相关,与速效钾呈显著正相关。研究表明,2种复合改良剂能显著提高盐渍土养分指标和细菌含量,可应用于盐渍土改良与修复,其中A3(LX3和园林腐熟物)复合改良剂效果最好。

关键词: 土壤复合改良剂, 滨海盐渍土, 土壤理化性质, 土壤改良, 土壤肥力, 微生物菌剂

Abstract:

To study the improvement and fertility effects of two soil compound amendments (composed of microbial agents and decomposed garden wastes) on saline soil, this study used the 60-day indoor constant temperature (30℃) cultivation method to study the physical and chemical properties of saline-alkali soil with different treatments. The results showed that: decomposed garden wastes could improve the conductivity and soil alkalinity of saline-alkaline soil, while adding different concentrations of microbial agents on the basis of decomposed garden wastes had no significant effect on the conductivity and soil alkalinity of saline-alkaline soil, indicating that the two compound amendments had no significant effect on improving the conductivity and soil alkalinity of saline-alkali soil. Adding decomposed garden wastes and two compound amendments could increase the total nitrogen, alkali-hydrolyzed nitrogen, available phosphorus and organic matter content of saline-alkali soil, of which, A3 compound amendment had the largest increase range and the best effect. Adding decomposed garden wastes and two compound amendments all could reduce the available iron, available manganese and available copper content, and increase the available zinc content. Among them, compound amendment A had a significant effect, and A1 had the best effect. From the perspective of the number of soil bacteria, the two compound amendments could significantly increase the content of soil bacteria, and the content order was A3>B2>A2>B1>A1 and B3. The correlation analysis of soil indicators and bacteria content showed that bacterial content had a very significantly positive correlation with soil total nitrogen, available phosphorus and organic matter, and a significantly positive correlation with available potassium. In summary, the two compound amendments could significantly increase the nutrient indexes and bacterial content of saline soil, and could be applied to the improvement and remediation of saline soil, the compound modifier A3 (LX3 and decomposed garden wastes) has the best effect.

Key words: soil compound amendments, coastal saline soil, soil physical and chemical properties, soil improvement, soil fertility, microbial agents

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