另外，烟草根系早期腐解物中可能存在致病因子，增加了烟草的感病几率。
In addition, the early decomposition from tobacco roots may contain pathogenic factors that may increase the risk of tobacco susceptibility.
烟草根系腐解物处理增加了烟草中MAD含量和保护酶POD活性，与烟草生长相关酶的活力则表现为先升高后降低。
Treatment by decomposition from tobacco roots increased content of MAD and protected activity of POD and the activity of growth-related enzymes was at first increased and then decreased.
重迎茬土壤中的化感物质种类多与大豆根系分泌物、根茬腐解产物、地上部水浸物中的化感物质相同。
Most allelochemicals in continuous and alternate cropping soils are the same as those in the root exudates, decomposed root stubs and aqueous extracts from plant shoots of soybean.
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