条件筛选
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Where in China are brown calcic soils distributed, and what crops are suitable for growing there?
Brown calcic soil is an arid soil that forms a transition from chestnut soil in the temperate dry steppe zone to gray desert soil in the desert zone. Its formation is dominated by the humus accumulation process and calcic process of steppe soils, and it also has some characteristics of desert soil-forming processes. It has a thin humus loamy