不同耕作方式对广西地区甘蔗地土壤热性质的影响

朱彦光; 李帅; 甘磊; 李健; SaeedRad; 陈晓冰

doi:10.19303/j.issn.1008-0384.2019.07.016

不同耕作方式对广西地区甘蔗地土壤热性质的影响

doi: 10.19303/j.issn.1008-0384.2019.07.016

朱彦光^{1, 2,},
李帅³,
甘磊^{1, 2},
李健⁴,
SaeedRad⁴,
陈晓冰^{1, 2, ,}

1.
桂林理工大学广西环境污染控制理论与技术重点实验室, 广西桂林 541004
2.
桂林理工大学广西环境污染控制理论与技术重点实验室科教结合科技创新基地, 广西桂林 541004
3.
桂林理工大学广西岩溶地区水污染控制与用水安全保障协同创新中心, 广西桂林 541004
4.
桂林理工大学环境科学与工程学院, 广西桂林 541004

基金项目:

国家自然科学基金项目 41501230

国家自然科学基金项目 41761048

国家自然科学基金项目 41701248

广西自然科学基金项目 2017GXNSFBA198102

广西自然科学基金项目 2016GXNSFAA380197

广西中青年教师基础能力提升项目 2017KY0270

详细信息

作者简介:
朱彦光(1993-), 男, 硕士研究生, 主要从事农田土壤水热运移研究(E-mail:415024471@qq.com)

通讯作者:
陈晓冰(1988-), 男, 博士, 讲师, 主要从事土壤水分运动与模拟研究(E-mail:jayvision_chen@126.com)

中图分类号: S566.1
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- 被引次数: 0
出版历程
- 收稿日期: 2019-05-25
- 修回日期: 2019-06-22
- 刊出日期: 2019-07-20

Thermal Property of Soil at Sugarcane Fields in Guangxi Affected by Tillage Method

ZHU Yan-guang^{1, 2
,},
LI Shuai³,
GAN Lei^{1, 2},
LI Jian⁴,
Saeed Rad⁴,
CHEN Xiao-bing^{1, 2
, ,}

1.
Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin University of Technology, Guilin, Guangxi 541004, China
2.
Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology for Science and Education Combined with Science and Technology Innovation Base, Guilin University of Technology, Guilin, Guangxi 541004, China
3.
Guangxi Collaborative Innovation Center for Water Pollution Control and Safety in Karst Area, Guilin University of Technology, Guilin, Guangxi 541004, China
4.
College of Environmental Science and Engineering, Guilin University of Technology, Guilin, Guangxi 541004, China

摘要

摘要: 目的探讨不同耕作方式下甘蔗地土壤热性质的动态变化，为合理有效利用水热资源提供依据。方法在广西农业科学院里建甘蔗种植地进行研究，定位监测粉垄耕作（T）处理和免耕（NT）处理方式下，5、20和40 cm深度土层的土壤含水量和土壤温度，并结合土壤基本参数，分析2个处理下土壤温度、土壤热导率和土壤热通量的变化规律。结果 NT处理受其质地影响，土壤温度的分布为5 cm > 40 cm > 20 cm，差异均显著（P < 0.05，下同）；T处理在一定程度上影响了土壤质地，其土壤温度分布为5 cm > 20 cm > 40 cm，差异均显著。研究期内，T处理土壤热导率在20 cm以上土层高于NT处理。T处理有利于降水入渗、储水性能良好、下层水分可供给上层等效果，相比于NT处理改善了土壤热导率沿土壤剖面的分布。同时，不同降水条件下，处理间的土壤热通量变化相同：NT处理在5~20 cm层大于T处理，而在20~40 cm层小于T处理，差异均达到显著水平。说明T处理土壤热通量由上至下减小，变化规律明显；而NT处理上下层间波动较大。结论粉垄耕作处理相比于免耕处理，在一定程度上改善了本地区的土壤质地和土壤温度分布，土壤热导率和土壤热通量的变化更具稳定性和规律性，可作为广西地区农业种植和管理方式的参考。
- 免耕 /
- 粉垄耕作 /
- 土壤温度 /
- 土壤热导率 /
- 土壤热通量
Abstract: Objective The hydrothermal dynamics of soil at sugarcane fields in Guangxi province was studied under different tillage methods to provide information for effective utilization of the natural resource. Method The moisture content and temperature of soil in the depths of 5, 20 and 40 cm under two tillage methods were monitored. Smash-ridging tillage (T) and no-tillage (NT) were applied in the sugarcane field at Lijian Research Station of Guangxi Academy of Agricultural Sciences in Nanning. In addition to the basic properties, the temperature, thermal conductivity, and heat flux of the soil under the treatments were collected for analysis. Result The texture of the NT-treated soil invariably affected the temperature distribution at different depths to show it from high to low in the order of 5 cm > 40 cm > 20 cm with significant differences at P < 0.05 (same level for the following). Whereas, when T was applied the texture was altered to cause the temperature ranking changed to 5 cm > 20 cm > 40 cm. During the time of this study, the thermal conductivity of the 5 cm and 20 cm soil under the T treatment was higher than that under NT. Compared to NT, T provided advantages on the infiltration, storage, and improved water distribution in the soil, leveling the thermal conductivities in various layers. Furthermore, varied precipitation significantly affected the heat flux in the 5-20 cm layer under NT more than T but less in the 20-40 cm layer. It indicated that the heat flux in the T-treated soil decreased gradually from the top to the deeper layers. On the other hand, in the NT-treated soil, it fluctuated greatly between the upper and lower layers with varied rain falls. Conclusion The smash-ridging tillage improved the texture and temperature distribution of the soil in the tested range with a more constant and predictable thermal conductivity and heat flux over no-tillage method.
- no-tillage /
- smash-ridging tillage /
- soil temperature /
- soil thermal conductivity /
- soil heat flux

HTML全文

图 1 不同耕作方式下的土壤温度变化

Figure 1. Soil temperature as affected by tillage method

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图 2 不同耕作方式下土壤热导率的变化

Figure 2. Changes on soil thermal conductivity under different tillage treatments

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图 3 不同耕作方式下土壤层热通量

Figure 3. Heat flux in soil layers under different tillage treatments

下载: 全尺寸图片幻灯片

表 1 3种土壤水分条件下土壤的含水量、热导率和热通量

Table 1. Moisture content, thermal conductivity, and heat flux rate of soils containing varied amount of water

试验处理 Treatments	土壤水分条件 Moisture conditions	5 cm含水量 Water content of 5 cm soil/(cm³·cm^-3)	5 cm热导率 Thermal conductivity of 5 cm soil/(W·m^-1·K^-1)	5~20 cm热通量Heat flux of 5 cm soil/(W·m^-2)	20 cm含水量Water content of 20 cm soil/(cm³·cm^-3)	20 cm热导率 Thermal conductivity of 20 cm soil/(W·m^-1·K^-1)	20~40 cm热通量Heat flux of 20-40 cm soil/(W·m^-2)	40 cm含水量Water content of 40 cm soil/(cm³·cm^-3)	40 cm热导率 Thermal conductivity of 40 cm soil/(W·m^-1·K^-1)
T	湿润条件Wetmoisture conditions	0.309±0.010Ac	1.323±0.019Ac	-182.656±42.483Ba	0.343±0.014Ab	1.355±0.022Ab	-145.080±19.061Aa	0.383±0.014Aa	1.411±0.022Aa
	中等水分条件 Mediummoisture conditions	0.304±0.007Aa	1.315±0.012Aa	-101.966±33.968Ba	0.275±0.007Ab	1.243±0.012Ab	-120.840±18.035Aa	0.322±0.011Aa	1.300±0.017Aa
	干旱条件 Dry moisture conditions	0.295±0.007Aa	1.272±0.011Aa	-71.772±33.041Aa	0.268±0.007Ac	1.223±0.011Ab	-50.002±17.196Ba	0.276±0.009Bb	1.202±0.012Bb
NT	湿润条件 Wetmoisture conditions	0.315±0.008Ab	1.348±0.014Aa	-347.129±50.110Aa	0.290±0.019Bc	1.240±0.032Bc	11.751±13.669Bb	0.367±0.011Aa	1.410±0.018Aa
	中等水分条件 Mediummoisture conditions	0.287±0.008Bb	1.297±0.013Bb	-257.018±31.863Aa	0.240±0.008bc	1.153±0.015Bc	51.766±14.054Bb	0.330±0.007Aa	1.336±0.011Aa
	干旱条件 Dry moisture conditions	0.260±0.004Bb	1.241±0.002Bb	13.574±25.967Bb	0.220±0.007Bc	1.113±0.011Bc	-89.052±17.074Aa	0.306±0.006Aa	1.302±0.008Aa
注：表中不同大写字母表示同一水分条件和同一深度下不同处理间的差异显著(P < 0.05)；不同小写字母表示同一处理和同一水分条件下不同土层深度下的差异显著(P < 0.05)。 Note：Different capital letters indicated significant difference under different tillage patterns when the water conditions and soil depths are the same (P < 0.05); different small letters indicated significant difference under different soil depths when the tillage patterns and water conditions are the same (P < 0.05).

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