5ANICK J,WHIPKEY A. Trends in new crops and new uses[M].Alexandria:ASHS Press,2002.
6AVICO U,PACIFICI R,ZUCCARO P. Variations of tetrahydrocannabinol content in Cannabis plants to distinguish the fibertype from drugtype plants[J].{H}Bulletin on Narcotics,1985,(04):61-65.
7RAWSON J.M. Hemp as an agricultural commodity[R].CRS Report for Congress,Received through the CRS Web,2005.
