多效唑对油茶苗木生长的生理效应

Physiological Effect of Paclobutrazol on the Growth of Camellia oleifera Seedling

对油茶苗木在旺盛生长期前以不同剂量的多效唑进行土壤施药处理,在旺盛生长初期以不同浓度的多效唑进行叶面喷施试验。500、750ppm的多效唑叶面喷施以及1500g/hm^2土壤施药处理对油茶苗木的地上部生长有明显的抑制作用,对苗木根部生长有明显的促进作用,提高了根冠比。并且提高了叶片的叶绿素含量、光合速率、蛋白质含量和总核酸含量。促进了苗木体内的新陈代谢活动,增强了苗木的素质。

Spraying the leaves surfacgs of Camellia oleif era's seedling and fertilizing the soil with different concentration of paclobutrazol can affect the growth of Camellia oleif era seedling. It turns out that, (1) Spraying paclobutrazol onto the leaves surfaces will inhibit the growth of Camellia oleif era seedling;(2) the root growth of the seedling will be promoted, (3) the chlorophyll content, the rate of photosynthesis, the protein content and the total ribonucleic acid content of leaves will be increased respectively. Therefore, the leaf's metabolism and the quality of Camellia oleif era seedling will be improved.