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当前位置: 首页 > 文章 > 深耕对黑土水分特征及动态变化影响 土壤通报 2018 (4) 942-948
Position: Home > Articles > Effect of Deep Tillage on Water Characteristics in Black Soil Chinese Journal of Soil Science 2018 (4) 942-948

深耕对黑土水分特征及动态变化影响

作  者：
王秋菊;刘峰;焦峰;常本超;贾会彬
单  位：
黑龙江省土壤环境与植物营养重点实验室;黑龙江省农业科学院佳木斯分院;黑龙江省农业科学院土壤肥料与资源环境研究所;黑龙江八一农垦大学
关键词：
深耕;水分特征曲线;有效性;土壤孔隙;储水量;耗水量
摘  要：
水分特征曲线是反映土壤持水性、供水性和水分有效性的重要参数。为明确深耕对黑土土壤水分特征及有效性的影响,通过田间多点取样,比较研究了深耕与常规耕作对土壤水分特征曲线、孔隙组成及水分动态变化影响。研究结果显示:深耕提高土壤饱和含水量和田间持水量,土壤水分特征曲线符合Van Genuchten模型,相关显著;深耕提高土壤有效孔隙比例,有效孔隙增加5.48%~82.00%;深耕提高了0~40 cm土层有效水储量,其中速效储水量和迟效储水量分别比对照增加1.54和1.21倍;深耕改变了作物整个生育期间土壤水分动态变化,5 cm土层土壤受降雨影响波动性大,对照、深耕无差异,15 cm、25 cm土层对照水分高于深耕,60 cm土层土壤水分含量对照低于深耕;对照0~30 cm土层土壤耗水量高于深耕7.8 mm,30~60 cm土层低于深耕7.2 mm,深耕深层土壤水分利用率高,是对照的1.74倍。黑土深耕可提高土壤水分有效性和总储量。
译  名：
Effect of Deep Tillage on Water Characteristics in Black Soil
作  者：
WANG Qiu-ju;LIU Feng;JIAO Feng;CHANG Ben-chao;JIA Hui-bin;Institute of Soil Fertilizer and Environment Resources, Heilongjiang Academy of Agricultural Sciences;Key Laboratory of Heilongjiang Soil Environment and Plant Nutrient;Heilongjiang Bayi Agricultural University;Jiamusi Branch of Heilongjiang Academy of Agricultural Sciences, Scientific Research Department;
关键词：
Deep tillage;;Soil water characteristic curve;;Soil water availability;;Soil pore space;;Moisture storage;;Water consumption
摘  要：
Soil water characteristic curve was the important parameters to reflect soil water retention, supplying capability, and effectiveness. In order to make clear the effect of deep tillage on water characteristics and effectiveness of Black Soil, the soil water characteristic scurve, soil porosity and dynamic change of soil moisture content in deep tillage and conventional tillage(CK) were analyzed by multi-point sampling in the field. Deep tillage increased the saturated moisture content of soil and field moisture capacity. Soil water characteristic curve fitted the Van Genuchten model. Deep tillage improved the percentage of soil effective pore by 5.48%-82.00%. The storage of available and slow available water at 0-40 cm soil layer were increased by 1.54 times and 1.21 times, respectively, in deep tillage compared with in CK. Soil moisture content at 5 cm layer was obviously effected by rainfall and had no obvious difference between deep tillage and CK. The content of soil moisture at 15 and 25 cm layers was more, and that at 40 and 60 cm layers was less in CK than in deep tillage. Water consumption in 0-30 cm soil layer was 7.8 mm higher,while that in 30-60 cm soil layer was 7.2 mm lower in CK than in deep tillage. The water use efficiency in deep tillage was 1.74 times higher than that in CK. Deep tillage can improve soil water availability and total reserves.

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