多效唑对油茶生长的生理效应研究

应用不同浓度的多效唑对油茶树在新梢萌发前进行土壤施药和涂干处理,在新梢萌发后进行叶面喷施试验。多效唑1000、1500、2000ppm浓度叶面喷施及1.5g/m~2加水土壤施药对油茶新梢生长有强烈的抑制作用。缩短新枝长度及节间长,增加短枝的比例,并且提高了叶片的叶绿素含量、光合速率和蛋白质含量,从而有效地控制了树势,减少了养分消耗,增进了新陈代谢活动。涂干处理没有效果。

Physiological Effect of Paclobutrazol on the Growth of Camellia oleifera

Spraying the new leaves surfaces of Camellia olerfera's shoots and fertilizing the soil with different concentration of paclobutrazol can affect the growth Camellia oleif era. It turns out that : ( 1 ) spraying paclobutrazol onto the leaves surfaces will intensely inhibit the shoots growth of Camellia oleif-era;(2)the shoots length will be shortened and the number of short shoots increased; and ( 3 ) the chorophyll, the photosynthesis rate, and the protein content of leaves will be increased respectively. Therefore, the leaf's metabolism of Camellia oleif era will be promoted and its growth controlled effectively.