| 引用本文: | 马馥扬,曹巍巍,彭 昊,等.不同改良剂对盐渍土壤的综合改良效应研究[J].灌溉排水学报,2025,44(1):89-96. |
| MA Fuyang,CAO Weiwei,PENG Hao,et al.不同改良剂对盐渍土壤的综合改良效应研究[J].灌溉排水学报,2025,44(1):89-96. |
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| 摘要: |
| 【目的】实现盐渍土壤多种障碍性状的综合改良。【方法】通过盆栽试验模拟当地水稻-油菜轮作种植模式，在常规施肥（CK）条件下，设置添加过磷酸钙750 kg/hm2（G1）和1 500 kg/hm2（G2），水解聚马来酸酐900 kg/hm2（J1）、1 200 kg/hm2 （J2）和1 500 kg/hm2 （J3）以及巨大芽孢杆菌40 kg/hm2 （W1）、60 kg/hm2（W2）和80 kg/hm2（W3），共9个处理，探究不同改良剂对盐渍土壤理化性状的改良效果。【结果】与CK相比，J2处理土壤总孔隙度、最大持水率、田间持水率和毛管持水率分别提高12.49%、13.60%、13.63%和12.41%，土壤电导率降低64.73%；W2处理土壤总孔隙度、最大持水率、田间持水率和毛管持水率分别提高8.59%、9.57%、9.01%和9.79%，土壤电导率降低55.66%；W1处理土壤体积质量降低了4.20%，最大持水率、田间持水率和毛管持水率分别提高6.58%、9.02%和9.69%，土壤电导率降低8.97%，土壤有机质量提高25.82%。【结论】主成分分析表明，常规施肥条件下盐渍土壤综合改良效果前3的处理分别为1 200 kg/hm2水解聚马来酸酐、60 kg/hm2巨大芽孢杆菌以及40 kg/hm2巨大芽孢杆菌。本研究结果对于盐渍土壤改良与其高效利用具有重要的理论意义和实际应用价值。 |
| 关键词: 盐渍土壤；改良剂；土壤持水能力；土壤养分 |
| DOI：10.13522/j.cnki.ggps.2024088 |
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| The effect of different soil amendment agents on physical and chemical properties of saline soils |
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MA Fuyang, CAO Weiwei, PENG Hao, YAO Rongjiang,
WANG Xiuping, LIU Guangming, ZHANG Wentai
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1. Xinjiang Key Laboratory of Soil and Plant Ecological Processes/College of Resources and Environment, Xinjiang Agricultural University, Urumqi 830052, China; 2. Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China;
3. Jiangsu Coastal Ecological Technology Development Co., Ltd, Nanjing 210000, China;
4. Institutes of Coastal Agriculture, Hebei Academy of Agriculture and Forestry Sciences, Tangshan 063299, China
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| Abstract: |
| 【Objective】 Soil conditioners are commonly used to improve quality and productivity of saline soils. This paper experimentally compares the effects of different soil conditioners on the physical and chemical properties of saline soils. 【Method】 The experiment was conducted in pots to simulate a rice-oilseed rape rotational cropping system. The soil was amended with calcium superphosphate at rates of 750 kg/hm2 (G1) and 1 500 kg/hm2 (G2); hydrolyzed poly (maleic anhydride) at rates of 900 kg/hm2 (J1), 1 200 kg/hm2 (J2) and 1 500 kg/hm2 (J3); and Bacillus megaterium at rates of 40 kg/hm2 (W1), 60 kg/hm2 (W2), and 80 kg/hm2 (W3). The control treatment (CK) was conventional fertilization without soil amendment. In each treatment, we measured physical soil properties and electrical conductivity of soil solution.【Result】Compared to CK, J2 increased soil total porosity, maximum water holding capacity, field water holding capacity, and capillary water holding capacity by 12.49%, 13.60%, 13.63% and 12.41%, respectively, while reducing electrical conductivity of the soil solution by 64.73%. W2 improved total soil porosity, maximum water holding capacity, field water holding capacity, and capillary water holding capacity by 8.59%, 9.57%, 9.01%, and 9.79%, respectively, while reducing electrical conductivity of the soil solution by 55.66%. W1 reduced soil bulk density by 4.20%, enhanced maximum water holding capacity, field water holding capacity, capillary water holding capacity and soil organic matter by 6.58%, 9.02%, 9.69% and 25.82%, respectively, while reducing electrical conductivity of soil solution by 8.97%.【Conclusion】Principal component analysis ranked the conditioners and their application rates in terms of their efficacy the following order: 1 200 kg/hm2 of hydrolyzed poly (maleic anhydride) > 60 kg/hm2 of Bacillus megaterium > 40 kg/hm2 of Bacillus megaterium. These findings provide a guidance for practical application of soil amendment agents to improve properties and productivity of saline soils in the studied regions. |
| Key words: saline soil; amendment; soil water-holding capacity; soil nutrients |
