Soil moistures in 0-1000cm soil layers on different growth age alfalfa grasslands in different rainfall areas of the Loess Plateau were measured and soil desiccation effects on alfalfa grasslands were analyzed and compared. Average soil moistures in 0-1000cm soil layers on alfalfa grasslands of semi-humid area, semi-arid area and semi-arid drought prone area were 10.84%, 7.07% and 5.45% respectively,which were obviously lower than local soil stable moisture and soil moisture on natural grassland. Soil water...
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