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针对松嫩平原北部丘陵漫岗区坡耕地存在的干旱与水土流失并存的问题,选取了垄向区田、鼠道、鼠道+暗管、鼠道+垄向区田、鼠道+暗管+垄向区田、常规耕作等6种水土保持技术模式,研究了土壤水分变化特征。结果表明,从整体上看,不同水土保持技术模式0～100cm土层土壤储水量与时段降雨量变化趋势一致,土壤储水量大小的技术模式依次为,鼠道+暗管+垄向区田>鼠道+垄向区田>垄向区田>鼠道+暗管>鼠道>常规耕作。各水土保持技术模式的总蒸散量大小依次为:鼠道+暗管+垄向区田>鼠道+垄向区田>鼠道+暗管>鼠道>垄向区田>常规耕作。研究结果为松嫩平原北部丘陵漫岗区坡耕地水土保持技术模式的合理选择提供依据。
Aiming at the coexistence of drought and water and soil erosion in sloping farmland in the northern hills and hilly area of Songnen Plain, we selected the fields of land, rat, rat, dumb, rat, + Ridge fields, conventional farming and other six kinds of soil and water conservation technology model to study the characteristics of soil moisture changes. The results showed that the trend of soil water storage in different soil and water conservation technologies was similar to the trend of rainfall in different periods of soil and water conservation. The technical modes of soil water storage were as follows: Rodent Ridge + ridge area> Ridge to Ridge> Rodent> Catheter> Routine> conventional farming. The total evapotranspiration of soil and water conservation technology patterns in order of size: rat + dark tube + ridge to the area of land> rat + ridge to the area of land> rat tube + duct> rat lane> Ridge area> conventional farming. The results provide the basis for the rational selection of soil and water conservation technologies for sloping farmland in the northern hills and hills of the Songnen Plain.