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杨树与刺槐混交具有改良土壤、增强抗性、提高产量的效果,受到了各方面的重视。一些生产单位和林业科研部门近年来对杨树刺槐混交林进行了调查研究,并陆续做过一些报道,同时对两树种混交效果较好的原因从不同角度做了探讨。为了揭示杨树、刺槐和北方沿河及滨海砂地上主要杂草-茅草(Imperata cylindricavar.major)之间的相互关系及其在一定立地条件下的相互影响,我们对三者的生物化学关系进行了初步研究。在自然界中,植物的种间关系非常复杂,表现形式多样。其中之一是一个种通过根部或者地上器官,以有机分泌物的形式对另外的种起作用,刺激周围植物对环境化学反应十分敏
Poplar and locust hybrids have the effect of improving the soil, enhancing resistance, increasing yield, has received all aspects of attention. In recent years, some production units and forestry research departments have conducted research on the poplar and black locust hybrid forests, and have done some reports one after another, at the same time, the reasons for the better combination of the two tree species have been discussed from different angles. In order to reveal the interrelationship between poplar, acacia and Imperata cylindricavar. Major and its interactions with the Imperata cylindricavar. Major in the northern coastal and coastal sandlands, we examined the biochemical relationships of the three A preliminary study. In nature, the interspecific relationships between plants are very complex and diverse. One of them is through a root or above ground organ, in the form of organic secretions on the role of another species to stimulate the surrounding plants on the chemical reaction is very sensitive to the environment