CAJ | 학술논문

土壤盐渍化是影响作物产量与制约农业发展的重要因素。本文根据义长灌域2012年5-12月份的野外实测资料，分析了试验区土壤含盐量在垂向剖面上的分布特征和变化规律；研究了地下水埋深和矿化度季节性变化规律及其对土壤盐分运移的影响。研究结果表明：强烈的蒸发促进盐分向土表运移，随土层深度的增加，土壤含盐量呈降低趋势；土壤积盐脱盐交替频繁，交替周期与灌水周期相对应；地下水埋深受灌排系统影响较大，作物生育期内地下水矿化度无较大波动；由于土壤盐分运移受多种因素影响，在野外试验条件下，单一因素如地下水埋深或地下水矿化度与土壤盐分运移的关系不显著。研究结果可为义长灌域土壤盐渍化防治与水土利用提供理论依据。
토양염지화시영향작물산량여제약농업발전적중요인소。본문근거의장관역2012년5-12월빈적야외실측자료，분석료시험구토양함염량재수향부면상적분포특정화변화규률；연구료지하수매심화광화도계절성변화규률급기대토양염분운이적영향。연구결과표명：강렬적증발촉진염분향토표운이，수토층심도적증가，토양함염량정강저추세；토양적염탈염교체빈번，교체주기여관수주기상대응；지하수매심수관배계통영향교대，작물생육기내지하수광화도무교대파동；유우토양염분운이수다충인소영향，재야외시험조건하，단일인소여지하수매심혹지하수광화도여토양염분운이적관계불현저。연구결과가위의장관역토양염지화방치여수토이용제공이론의거。
Soil salinization is an important factor affecting crop yield and agricultural development.Field measured data in Yichang irrigation sub-district from May-December in 2012 were used in the present work. Distribution and variations in soil salinity in vertical profile were analyzed.Seasonal variation of groundwater level and mineralization degree,and their effect on soil salt movement were studied.It was found that intense evaporation promoted salt movement to soil surface.Increased soil depth could diminish soil salinity.Soil salification and desalination alternated frequently with irrigation. Groundwater depth was influenced by irrigation and drainage systems.During crop growth,groundwater mineralization showed little fluctuation. Several factors affected soil salt movement,but no significant correlations between groundwater depth or mineralization and soil salinity were found under our field experimental conditions.This will provide theoretical reasons for water and salt management of Yichang irrigation sub-district.