许多高等植物能分泌抗生物质或自毒性物质,茶树是否能分泌自毒性物质,目前尚无报道。但从成龄茶园中每年落于土中的大量茶籽却不能成苗、茶园换种改植时新植茶苗的成活率及生长势都比新垦地的差、扦插苗圃轮作比不轮作的茶苗易成活且生长好等现象观察,茶树有可能分泌自毒性物质,因此有必要通过试验加以证实。 Many higher plants can secrete anti-biomass or self-toxic substances, tea plants can secrete self-toxic substances, has not been reported. However, the large amount of tea seeds which fall into the soil from the mature tea plantations can not be used as seedlings each year. The survival rate and growth potential of the new tea seedlings are worse than those of the newly reclaimed land, The seedlings are easy to survive and grow well and other phenomena observed, the tea may secrete self-toxic substances, it is necessary to be confirmed by the test.