The characteristics of reproduction ecology for wild liquorice, semi-wild liquorice and cultivated liquorice had been studied in the west parts of Heilongjiang province by the principles and methods of reproduction ecology and population ecology. The results as follows:
1. The sexual reproduction was lack to 3 years old cultivated liquorice that was in vegetative growth. The environment influenced the sexual reproduction of the wild liquorice, and the individual plant on the ground was in vegetat...