Influences of artificial disturbing degrees on soil conditions and liquorice roots system
人为扰动程度对土壤环境和甘草地下根系的影响

In order to obtain cultivated liquorice which characteristics characters and qualities were more approach to wild liquorice, the people often choose some traditional distribution regions of wild liquorice for cultivated liquorice. And sometimes there was a phenomena of mixed growth between wild liquorice and cultivated liquorice. We chose grasslands, protection forest and farmland in Western Heilongjiang Province of China, as the research sites. Because these sample sites were neighbored to each other, some...