铝是植物灰分元素之一,但对于许多植物来说,土壤或培养液中过量的铝将是有害的,即所谓植物的“铝毒”现象。近年来,由于酸性土不断被利用和开发,人们对植物的“铝毒”和植物的铝营养逐步有了重视,并有过不少的研究。茶树是天然的高耐铝性植物,因此,它自然地成为植物铝营养和“铝毒”机制研究的重要对象。兹将有关资料整理综合,供读者参考。 一、茶树体内铝的含量 茶树系多年生酸性土指示植物,由于它长期地生长在热带及亚热带富铝化土壤上,在其个体发育过程中,积累了大量的铝,平均含量可达1500PPm以上,与其它酸性土上生长的桑树和桔子树相比,要高几十倍,以至上百倍。不过,茶树体内铝含量的分布很不均匀,据日本石恒的资料,茶树老叶片中铝含量最 Aluminum is one of the plant’s ash elements, but for many plants excess aluminum in the soil or in the broth will be detrimental, the so-called “aluminum toxicity” of plants. In recent years, due to the continuous utilization and development of acid soil, people have gradually paid attention to the “aluminum poison” of plants and the aluminum nutrition of plants, and have studied quite a lot. Tea tree is a natural high-Al-tolerant plant, therefore, it naturally becomes an important object of plant aluminum nutrition and aluminum toxicity mechanism research. The relevant information will be consolidated, for readers reference. First, the content of aluminum in the tea tree Tea tree is perennial acid soil indicating plants, because of its long-term growth in tropical and subtropical aluminum-rich soil, in its individual development process, accumulated a large amount of aluminum, the average content of up to 1500PPm above, Compared with mulberry and orange trees grown on other acidic soils, they are several tens times higher and even hundreds of times larger. However, the distribution of aluminum in tea plant body is very uneven, according to Japan Shiheng data, the old leaves of tea, the most aluminum content