Soil desiccation characteristics of alfalfa grasslands and soil water restoration effects in alfalfa-grain crop rotations on the semi-arid areas of the Loess Plateau
Soil water consumption characteristics of deep soil profile on different growth age alfalfa grasslands and soil water restoration effects in alfalfa-grain crop rotation fields were investigated and analyzed at Guyuan of semi-arid areas of the Loess Plateau.The results showed as followings:(1) Average soil moisture in 0-1000cm soil profile on 4 kinds of 1-12 year-old alfalfa grasslands was 6.6%,and soil water overuse amount was 702.8mm,and soil desiccating rate was 147.1mm per year,the soil desiccation inten...
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