| 秦红灵,李春阳,高旺盛,董孝斌.北方农牧交错带干旱区保护性耕作对土壤水分的影响研究[J].干旱地区农业研究,2005,(6):22~25 |
| 北方农牧交错带干旱区保护性耕作对土壤水分的影响研究 |
| Effect of plough and conservation tillage on soil moisture in ecotone between farming and animal husbandry in north China |
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| DOI：10.7606/j.issn.1000-7601.2005.06.05 |
| 中文关键词: 土壤水分变化 保护性耕作 北方农牧交错带 |
| 英文关键词:soil moisture variation conservation tillage ecotone between farming and animal husbandry in north China |
| 基金项目:国家重点基础发展规划项目(G2000018606) |
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| 中文摘要: |
| 为了揭示农牧交错地区不同农田耕作方式对其水分环境的影响过程及规律,选择翻耕地和免耕地两种土地耕作类型,分析不同耕作方式下土壤水分的时空变化情况。结果表明:①在作物生长的整个生育期内土壤水分含量有随降雨量周期变化的趋势,无论是何种耕作方式,除生育期降雨外,播前底墒也是土壤供水的重要组成部分;②土壤贮水能力免耕地大于翻耕地;0~80 cm土壤水分的空间剖面自上而下分为两个层次:表层失水层(0~30 cm)和中层贮水层(30~80 cm)。③用SPSS统计软件进一步对土壤水分与土层深度的关系进行拟合,结果表明土壤水分与土层深度的关系具有极强的相关性,其关系方程为拟和三次抛物线型。 |
| 英文摘要: |
| In the arid areas of ecotone between farming and animal husbandry in north China，soil water is crucial to the plant growing and vegetation restoration，so the conservation farming should be introduced．In order to evaluate the effect of different tillage types on soil moisture，the paper analyses the temporal and spatial variations of soil moisture under plough tillage and no-tillage．The soil moisture within 0~80 cm was measured in two years．The results indicated： ① In general，the changes of soil moisture content corresponded to the amount of precipitation during the planting season．In addition，the soil moisture before sowing was also a vital element whatever the tillage type was．② The water storage capacity of no-tillage was more than plough tillage．There were two layers of spatial variations of soil profile moisture within0～80cm： water loss layer within 0～30 cm and water storage layer within3 0～80 cm．③ With SPSS software to simulate the relationship between soil moisture content and soil depth，the correlation was obvious and the equation type was cubic parabola curve． |
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