CAJ | 학술논문

植物的自毒作用是同种植物个体间的一种化学竞争机制。为了探索紫茎泽兰种内竞争关系及种群受到自然破坏后的更新途径。采用生物测定及野外调查法，研究了紫茎泽兰叶片水浸液对其幼苗生长的影响及冻害后种群自然更情况。紫茎泽兰叶片水浸液对其幼苗的生长有明显的促进作用，对苗高的促进作用表现为先增加后缓慢减弱，3%浓度时促进作用达到了峰值；在潮湿的秋季紫茎泽兰入侵地破土后种子易发芽，未破土的地带由于枯落物的覆盖，阻碍了种子的发芽，土壤种子库主要分布在0~10 cm的土层中；紫茎泽兰单优势种群在受到冻害后，以萌蘖的方式进行种群更新。紫茎泽兰是一种抗自毒作用极强的植物，在干旱的条件下紫茎泽兰以萌蘖的方式进行种群更新。
식물적자독작용시동충식물개체간적일충화학경쟁궤제。위료탐색자경택란충내경쟁관계급충군수도자연파배후적경신도경。채용생물측정급야외조사법，연구료자경택란협편수침액대기유묘생장적영향급동해후충군자연경정황。자경택란협편수침액대기유묘적생장유명현적촉진작용，대묘고적촉진작용표현위선증가후완만감약，3%농도시촉진작용체도료봉치；재조습적추계자경택란입침지파토후충자역발아，미파토적지대유우고락물적복개，조애료충자적발아，토양충자고주요분포재0~10 cm적토층중；자경택란단우세충군재수도동해후，이맹얼적방식진행충군경신。자경택란시일충항자독작용겁강적식물，재간한적조건하자경택란이맹얼적방식진행충군경신。
Autotoxicity was a chemical interaction mechanism among intra-specific plant individuals. The aim of this study was to explore the relationship between intraspecific competition and population regeneration approach after destroyed. Population of Eupatorium adenophorum (Spreng.) natural regeneration after frost damage and the effects of aqueous leaf extracts on seedling growth was studied by bioassay and field investigate. The results showed that the aqueous leaf extracts of Eupatorium adenophorum (Spreng.) could obviously promote the growth of seedlings, the promoting effect on seedling height increased at first and then gradually weakened, when the concentration was 3% the promote effect reached the peak; The seeds of Eupatorium adenophorum (Spreng.) in the wet autumn was easily germination when the area invaded by Eupatorium adenophorum (Spreng.) was break, no broken zone due to the litter coverage, hindered the seed germination, soil seed bank mainly distributed in 0-10 cm soil layer; Species update by tiller regeneration method when the dominant species of Eupatoriumadenophorum(Spreng.) was damaged after frost. The results of this paper showed that Eupatorium adenophorum (Spreng.) had strong resistance capacity to autotoxicity, and its species update was by tiller regeneration method under the arid conditions.