The habitat types, characters of life histories and divisions of life history forms for wild liquorice, semi-wild liquorice and cultivated liquorice had been studied in the west parts of Heilongjiang province. The results as follows:
1. The liquorice is mainly growing in sandy soil which surface layers were often dry and deep-seated layers often moisture. With artificial disturbance, the soil conditions often occurred some changes on soil physicochemical property, especially, on soil water content...
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