Study on the feature of soil water dynamics in slope citrus orchard in mid-subtropical climatic zone of China
JING Yuan-shu
QIANG Hui-ting
WANG Gui-jun
TANG Jia-liang
Abstract：Collected data showed that the soil water status in the citrus orchards located on the sloping land changed along with the rain periods in the year and slope in mid-subtropical China. The water status in the soil depth of 0 to 150 cm could be in 3 statuses: water surplus,water being consuming and water not enough. The soil water potential changed in accordance with the water stored in soil. It usually diminishes at first, the soil water potential increase and become more sable. Under 120 cm soil layer the water potential was almost unchanged in the year. The higher soil water potential was,the more the frequency appeared,ranking in saturation> wetness> deficit> drought. The frequency of saturation- moist segment was ranked in the bottom soil> the subsoil> topsoil,down slope> up slope. The drought segment of low water potential appeared on upper slope,the soil surface and in the dry season. The slope land delayed the precipitation distribution,and the percolation at upper slope was greater than down slope.
Keywords：Orchard in slope landWater potentialSeasonal droughtFrequency
Publication Date：2010-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 188-192 )