| 引用本文: | 徐建清,陈舟舟,刘鹏宇,等.厌氧污泥修复沙化土壤及对紫花苜蓿产量的影响[J].灌溉排水学报,2022,41(S1):13-18. |
| XU Jianqing,CHEN Zhouzhou,LIU Pengyu,et al.厌氧污泥修复沙化土壤及对紫花苜蓿产量的影响[J].灌溉排水学报,2022,41(S1):13-18. |
|
| 摘要: |
| 【目的】考察厌氧污泥对沙化土地漏水漏肥、养分失衡、微生物群落结构单一、作物生物量下降问题的改良效果。【方法】设置不施加厌氧污泥（CK）、低厌氧污泥施加量（A1）、中厌氧污泥施加量（A2）、高厌氧污泥施加量（A3）4个处理，通过大田试验探讨厌氧污泥对沙化土地厚度在0~20 cm土层的土壤贮水能力、土壤养分状况、土壤微生物群落结构、紫花苜蓿生物量的影响。【结果】与不施加厌氧污泥CK相比，施加厌氧污泥对沙化土地有显著的改良效果，其中厌氧污泥施加量为30 t/hm2的A3处理的改良效果最佳：①与CK相比，A3处理土壤贮水量的改良增幅分别为32.26%（30 d）、25.3%（60 d）、22.39%（90 d）；②在厌氧污泥施入初期，与CK相比，A3处理土壤有机质量提升了139.38%，土壤全氮速效氮量分别提升了177.73%、159.75%，土壤全磷、有效磷量分别提升了111.64%、1 062.75%，土壤全钾、速效钾量分别提升了66.07%、572.82%；③与CK相比，A3处理土壤脲酶和蔗糖酶活性分别提升了96.96%、375.11%；④与CK相比，A3处理紫花苜蓿鲜质量和干质量分别提升了183.97%（90 d）、180.98%（90 d）。【结论】厌氧污泥能显著提升土壤贮水能力，增加土壤养分，提高土壤微生物物种丰富性，提高土壤酶活，促进紫花苜蓿生长，提高紫花苜蓿生物量，并且随着厌氧污泥施加量的增加，改良效果越明显。 |
| 关键词: 厌氧污泥；沙土改良；土壤贮水量；土壤养分；紫花苜蓿 |
| DOI：10.13522/j.cnki.ggps.2021566 |
| 分类号: |
| 基金项目: |
|
| Effects of Anaerobic Sludge on Remediation of Sandy Soil and Biomass of Alfalfa |
|
XU Jianqing, CHEN Zhouzhou, LIU Pengyu, CHEN Daijie, TAN Jun, WU Yuansheng, CHENG Yue, CHU Xiaohe
|
|
1. Zhejiang University of Technology, Hangzhou 310014, China; 2. Shanghai Jiaotong University, Shanghai 200240, China;
3. Shanghai Institute of Pharmaceutical Industry, Shanghai 201203, China;
4. Chifeng Anbang Industrial Waste Disposal Co., Ltd, Chifeng 024000, China;
5. Zhejiang Lvchuang Biotechnology Co., Ltd, Huzhou 313299, China
|
| Abstract: |
| 【Objective】In order to investigate the improvement effects of anaerobic sludge on water leakage and fertilizer leakage, nutrient imbalance, single microbial community structure and crop biomass decline of sandy soil.【Method】Four treatments were set up in this study, including no anaerobic sludge (CK), low anaerobic sludge application (A1), medium anaerobic sludge application (A2) and high anaerobic sludge application (A3), then explore the effects of anaerobic sludge on soil water storage capacity, soil nutrient status, soil microbial community structure and alfalfa biomass of sandy land with a thickness of 0~20 cm through field experiments.【Result】①compared with the group CK without anaerobic sludge, the application of anaerobic sludge has a strong improvement effect on sandy soil, and the group A3 with high anaerobic sludge application amount of 30 t/hm2 has the best improvement effect: the improvement of soil water storage reaches 32.26% (30 d), 25.3% (60 d) and 22.39% (90 d); ②in the initial stage of anaerobic sludge application, compared with the group CK, the content of soil organic matter in the group A3 increases by 139.38%, the content of soil total nitrogen and available nitrogen increases by 177.73% and 159.75%, the content of soil total phosphorus and available phosphorus increases by 111.64% and 1 062.75%, the content of soil total potassium and available potassium increases by 66.07% and 572.82% respectively; ③compared with the group CK, the soil urease activity and sucrase activity of the group A3 increase by 96.96% and 375.11%; ④compared with the group CK, the fresh weight and dry weight of alfalfa in the group A3 increase by 183.97% (90 d) and 180.98% (90 d).【Conclusion】It indicates that anaerobic sludge can significantly improve soil water storage capacity, increase soil nutrients, improve soil microbial species richness, increase soil enzyme activity, promote alfalfa growth and increase alfalfa biomass, furthermore, and with the increase of anaerobic sludge application, the improvement effects become more obvious. |
| Key words: anaerobic sludge; sandy soil improvement; soil water storage capacity; soil nutrients; alfalfa |
