[1]Zhang Shuo,Wang Song,Zhang Yu,et al.Changes in Soil Pore Characteristics Under Powder Ridge Tillage and Rotary Tillage in Sugarcane Field in Guangxi Region[J].Research of Soil and Water Conservation,2024,31(06):221-229.[doi:10.13869/j.cnki.rswc.2024.06.018]
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
31
Number of periods:
2024 06
Page number:
221-229
Column:
Public date:
2024-12-10
- Title:
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Changes in Soil Pore Characteristics Under Powder Ridge Tillage and Rotary Tillage in Sugarcane Field in Guangxi Region
- Author(s):
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Zhang Shuo1, Wang Song2, Zhang Yu1, Zhang Hongxia2, Wei Benhui3, Huang Jinsheng4, Gan Lei1,2
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(1.Guangxi Collaborative Innovation Center for Water Pollution Control and Safety in Karst Area, Guilin University of Technology, Guilin, Guangxi 541004, China; 2.Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin University of Technology, Guilin, Guangxi 541004, China; 3.Institute of Economic Crops, Guangxi Academy of Agricultural Sciences, Nanning 530007, China; 4.Agricultural Resource and Environment Research Institute, Guangxi Academy of...)
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- Keywords:
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pore structure; CT scanning; 3D reconstruction; powder ridge tillage; sugarcane field
- CLC:
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S152; S566.1
- DOI:
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10.13869/j.cnki.rswc.2024.06.018
- Abstract:
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[Objective]The objectives of this study are to analyze the variation patterns of soil pore structure characteristic parameters under different tillage methods in sugarcane fields in Guangxi region, and to provide a theoretical foundation for the promotion and application of powder ridging tillage technology. [Methods]Soils obtained from sugarcane fields had been subjected to two different tillage methods: powder ridging tillage to a depth of 20 cm(F20)and rotary tillage to a depth of 20 cm(X20)after three years of cultivation. X-ray CT scanning technology, in combination with ImageJ, was utilized for the analysis of soil pore distribution parameters in both two-dimensional and three-dimensional formats, ultimately enabling the visualization of the three-dimensional reconstruction of soil pore structure. [Results]Both tillage methods influenced the quantity of two-dimensional and three-dimensional soil pores, with a higher prevalence of smaller pores compared to larger ones. The F20 treatment showed the reduced amounts of two-dimensional and three-dimensional pores in comparison to the X20 treatment, but demonstrated higher overall roundness. The soil pore surface density exhibited a significant decrease in the F20 treatment in comparison to the X20 treatment. Conversely, the complexity of soil pores at the same soil depth was found to be higher in the former treatment. The mean porosity and compactness values of the F20 treatment(2.08%, 25.22)were lower than those of X20 treatment(4.71%, 27.23)(p<0.05), whereas the mean specific surface area value of the F20 treatment(2.62 mm-1)was higher than that of X20 treatment(2.50 mm-1)(p<0.05). The mean connectivity values did not exhibit a statistically significant difference between the two treatments; however, the mean curvature value of F20 treatment(1.42%)was significantly different from that of X20 treatment(1.45%)(p<0.05). Moreover, the branch length density differed greatly between the two treatments, with the mean value of X20 treatment(115.87 mm/cm3)being higher than that of F20 treatment(50.41 mm/cm3)(p<0.05). The pore distribution in the three-dimensional reconstruction images of both treatments exhibited a higher degree of uniformity for the F20 treatment. Moreover, the analysis revealed that the connectivity of pores in the primary growth region of sugarcane was found to be more effective in the F20 treatment in comparison to the X20 treatment. [Conclusion]In the Guangxi region, the utilization of powder ridging tillage offers several advantages over conventional rotary tillage for cultivating sugarcane. This approach provides several advantages associated with soil pore structure, which in turn promotes the growth of the sugarcane root system and ultimately results in increased sugarcane yield.