Effect of Autumn Tillage on Soil Thermal Conditions During the Seasonal Freeze-thaw Period in the North Xinjiang

SUN Kai; WANG Chunxia; LAN Mingju; LIANG Fei

doi:10.13870/j.cnki.stbcxb.2021.05.010

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Effect of Autumn Tillage on Soil Thermal Conditions During the Seasonal Freeze-thaw Period in the North Xinjiang

更新时间：2025-03-12

- Effect of Autumn Tillage on Soil Thermal Conditions During the Seasonal Freeze-thaw Period in the North Xinjiang
- Vol. 35, Issue 5, Pages: 63-71(2021)
- 作者机构：
  
  1. 石河子大学水利建筑工程学院,新疆,石河子,832000
  2. 石河子大学现代节水灌溉兵团重点实验室,新疆,石河子,832000
  3. 新疆农垦科学院,新疆,石河子,832000
- 作者简介：
- 基金信息：
- DOI：10.13870/j.cnki.stbcxb.2021.05.010
  CLC： TV93;S152.7
- Published：2021
- 稿件说明：
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SUN Kai, WANG Chunxia, LAN Mingju, et al. Effect of Autumn Tillage on Soil Thermal Conditions During the Seasonal Freeze-thaw Period in the North Xinjiang[J]. 2021, 35(5): 63-71.
DOI：

SUN Kai, WANG Chunxia, LAN Mingju, et al. Effect of Autumn Tillage on Soil Thermal Conditions During the Seasonal Freeze-thaw Period in the North Xinjiang[J]. 2021, 35(5): 63-71. DOI： 10.13870/j.cnki.stbcxb.2021.05.010.

摘要

为明确秋耕对季节性冻融土壤热状况的调控作用，对比分析了翻耕（FG）、免耕（MG）、垄沟（LG）、翻耕活性炭覆盖（FH）和翻耕秸秆覆盖（FJ）5种处理对土壤温度、冻融循环以及土壤温度梯度等影响的差异。结果表明：与传统FG处理相比，MG、LG、FH、FJ处理均减弱了土壤温度与气温的相关性，降低了整个冻融期土壤温度的升、降温幅度和不同冻融阶段土壤温度昼夜变化的变异性程度，维持土壤温度序列稳定的能力FJ>FH>LG>MG。FG处理最先冻结和融化，其余处理延缓土壤冻结和融化速度的效果为FJ>FH>LG>MG，且冻结速度和融化速度越小，冻融交替越频繁，冻融循环次数越大。各处理土壤温度梯度与气温均呈极显著的相关关系（P<0.01），相关性程度为FG>LG>MG>FH>FJ，与土壤贮水量均呈极显著的负相关关系（P<0.01），相关性程度为FJ>FH>LG>MG>FG，MG、LG、FH、FJ处理均加强了土壤水热资源的保持，其中翻耕秸秆覆盖和翻耕活性炭覆盖促进了深层土壤热量上移，更有利于改善季节性冻融期间土壤的水热状况，维持北疆春播土壤墒情。

Abstract

In order to investigate the effect of autumn tillage on the regulation of seasonal freeze-thaw soil thermal conditions

this study compared and analyzed the effects of the five treatments:Traditional tillage (FG)

no-tillage (MG)

ridge-furrow (LG)

tillage followed by activated carbon mulching (FH)

and tillage followed by straw mulching (FJ)

on soil temperature

freeze-thaw cycles and soil temperature gradients. The results showed that compared with the FG

FH and FJ treatments all weakened the correlation between soil temperature and air temperature

reduced the dynamic magnitude of soil temperature throughout the freeze-thaw period and the degree of diurnal variability of soil temperature at different freeze-thaw stages

and maintained the stability of the soil temperature sequence as FJ > FH > LG > MG. The FG was the first to freeze and melt

and the remaining treatments delayed the effect of soil freezing and melting rate as FJ > FH > LG > MG. And the smaller the freezing and melting rates

the more frequent the freeze-thaw alternation and the greater the number of freeze-thaw cycles. The soil temperature gradient of all treatments showed a highly significant correlation with air temperature (P < 0.01)

and the degree of correlation was FG > LG > MG > FH > FJ. All treatments showed a highly significantly negative correlation with soil water storage (P < 0.01)

and the degree of correlation was FJ > FH > LG > MG > FG. MG

and FJ treatments all enhanced the retention of soil water and heat resources

in which FJ and FH promoted the upward movement of deep soil heat

which was more conducive to improving soil water and heat conditions during seasonal freezing and thawing and maintaining soil moisture in spring sowing in the north Xinjiang.

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