Effects of microalgal fertilizer on physical and chemical properties of saline soils and maize yield in Tumochuan Plain

Li Huixinge; Chen Shichao; Duan Pengcheng; Lin Fangchun

doi:10.13961/j.cnki.stbctb.2025.02.002

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Effects of microalgal fertilizer on physical and chemical properties of saline soils and maize yield in Tumochuan Plain

- Effects of microalgal fertilizer on physical and chemical properties of saline soils and maize yield in Tumochuan Plain
- Bulletin of Soiland Water Conservation Vol. 45, Issue 2, Pages: 12-21(2025)
- 作者机构：
  
  1. 内蒙古农业大学沙漠治理学院,内蒙古,呼和浩特,010018
  2. 内蒙古自治区风沙物理与防沙治沙工程重点实验室,内蒙古,呼和浩特,010018
  3. 内蒙古阿尔格生命科学有限公司,内蒙古,乌兰察布,011800
  4. 中国林业科学研究院沙漠林业试验中心,内蒙古,巴彦淖尔,015200
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2025.02.002
  CLC： S156.4
- Online First：16 May 2025，
  
  Published：2025
- 稿件说明：
移动端阅览
Li Huixinge, Chen Shichao, Duan Pengcheng, et al. Effects of microalgal fertilizer on physical and chemical properties of saline soils and maize yield in Tumochuan Plain[J]. Bulletin of Soiland Water Conservation, 2025, 45(2): 12-21.
DOI：

Li Huixinge, Chen Shichao, Duan Pengcheng, et al. Effects of microalgal fertilizer on physical and chemical properties of saline soils and maize yield in Tumochuan Plain[J]. Bulletin of Soiland Water Conservation, 2025, 45(2): 12-21. DOI： 10.13961/j.cnki.stbctb.2025.02.002.

摘要

[目的

]

探究3种微藻肥及其不同施用量对盐渍化土壤的改良效果和对玉米生理指标及产量的影响，为盐渍化土壤的改良提供新的参考依据。[方法

]

本研究在土默川平原盐碱地开展大田试验。试验设计了3种微藻肥(分别记作W

，W

)，每种微藻肥设置3个施肥水平(15，30，45 L/hm

，分别记作N

，N

)，以不施藻肥作为对照，共计10个处理。[结果

]

①在土壤理化性质方面，与未施用微藻肥的对照处理相比，施用微藻肥处理显著降低了土壤的容重，降幅为4.11%～12.34%；提高了土壤孔隙度，增幅为10.82%～38.31%；土壤pH值和含盐量呈现下降趋势，分别降低了1.82%～9.90%和17.12%～47.66%。②在玉米生长方面，与未施用微藻肥的对照处理相比，微藻肥处理下的玉米株高、茎粗以及叶面积指数分别增加了1.12%～18.47%，1.15%～29.02%和22.50%～74.14%；百粒重和产量分别提高了16.02%～48.31%和15.73%～41.31%。玉米产量与土壤容重和pH值呈显著负相关关系，与叶面积指数等呈显著正相关关系。[结论

]

施用Ⅱ号微藻肥30 L/hm

处理)对改良盐渍土和提高玉米产量的效果最好，在选择施用微藻肥对土默川平原盐渍化土壤改良时可优先考虑。

Abstract

[Objective] The effects of three types of microalgal fertilizers and their varying application rates on soil salinity

physiological indicators

and maize yield were explored

in order to provide a new scientific basis for the enhancement of saline soil. [Methods] A field experiment was conducted using saline alkali collected from the Tumochuan Plain. Three kinds of microalgal fertilizer (designated as W1

and W3) were formulated for the experiment. Each microalgal fertilizer was established with three levels of application (15

and 45 L/hm2

designated as N1

and N3

respectively)

a control without fertilizer

resulting in a total of 10 treatments. [Results] ① Regarding the physical and chemical parameters of soil

the application of microalgal fertilizer considerably decreased soil bulk density by 4.11% to 12.34% compared to the control treatment. Soil porosity increased from 10.82% to 38.31%. The soil pH value and salt concentration fell by 1.82%—9.9% and 17.12%—47.66%

respectively. ② As for maize growth

compared with the control treatment

the plant height

stem diameter

and leaf area index of maize subjected to the microalgal fertilizer treatment increased from 1.12% to 18.47%

1.15% to 29.02%

and 22.5% to 74.14%

respectively. The 100-grain weight and yield improved by 16.02%—48.31% and 15.73%—41.31%

respectively. Maize yield had a significantly negative correlation with soil bulk density and pH value while demonstrating a significantly positive correlation with the leaf area index. [Conclusion] The effect of the W2 microalgal fertilizer applied at a rate of 30 L/hm2 (W2 N2 treatment) on improving saline soil and increasing maize yield was better; it should therefore be given priority when selecting microalgae to improve saline soil in the Tumochuan Plain.

关键词

Keywords

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