Ecological model of cultivating Amyda sinesis in no sand environment in greenhouse

Ecological culture of Amyds sinesis in no sand environment has broken the old model of traditional cultivation in sand water environment.Based on ecological theories,the old ponds of cultivating A.sinesis are rebuilt and the system regulation to water quality,water level as well as cultured density has been realized .Herbal medicine and ecological preparation have heen used in preventing and curing the diseasesd.The survival rate of A.sinesis has increased considerably.A new theoretical model has been given...