不同灌溉定额对枸杞土壤水分动态变化规律的影响

利用时域反射仪对不同灌溉定额下枸杞园土壤水分的变化特征进行研究,分析不同灌溉定额条件下土壤水分垂直变化特征。结果表明,枸杞园中土壤水分变化的深度一般在0～100cm,0～60cm土层变化尤为激烈,灌水量越大,变化越明显,100～180cm土层各处理土壤水分变化不明显;根据不同处理土壤水分运移规律,将0～180cm土层垂直分为4层,即活跃层(0～30cm)、次活跃层(30～60cm)、缓变层(60～100cm)和均稳层(100～180cm)。

Effect on Changes of Soil Water Dynamics of Lycium barbarum by Different Irrigation

Used the Time Domain Reflectometry,the spatial variation of soil moisture characteristics were studied under different irrigation conditions in the Lycium barbarum field,the vertical changes of soil water characteristics were analyzed under different irrigation amount conditions.The results showed that the depth of soil water content generally changed within the range of 0-100 cm.Especially the changes in 0-60 cm soil was particularly intense,the greater the amount of irrigation,the more obvious changes.The soil moisture in each treatment did not change significantly within the range of 100-180 cm.According to the laws of water movement,the vertical changes in soil moisture could be divided into four layers: active layer(0-30 cm),sub-active layer(30-60 cm),slowly decreasing layer(60-100 cm),and stable layer(100-180 cm).