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药用植物的自毒作用是连作障碍的原因之一,作者对药用植物自毒现象和调控措施等方面的工作进行了总结。自毒作用不但抑制药材生长、还加重了一些病害的发生。影响自毒作用的因素包括植物的种类及品种、植物根际微生物、植物营养状况及土壤类型等。调控方法包括及时去除地上枯落物,添加有益微生物和有机物,合理施肥,间作、轮作,根据自毒作用强弱采取不同管理等措施。
The autotoxic effect of medicinal plants is one of the causes of continuous cropping obstacle, and the author summarizes the autotoxicity and control measures of medicinal plants. Autotoxic effects not only inhibit the growth of medicinal herbs, but also aggravate the occurrence of some diseases. Factors that affect autotoxic effects include plant species and varieties, plant rhizosphere microorganisms, plant nutrition status and soil types. Control methods include the timely removal of litter on the ground, the addition of beneficial microorganisms and organic matter, fertilization, intercropping, rotation, taking different measures depending on the role of autotoxicity.