多效唑·矮壮素对红叶地肤矮化效果研究.

u-fu, CHEN Hua-ling, WANG Guo-hang et al (Jiangxi Institute of Economic Crops, Nanchang, Jiangxi 330202) Abstract [Objective]This study explored the dwarfing effect of paclobutrazol and chlormequat on Kochia scoparia in order to provide reference for the ornamental value of Kochia scoparia. [Method]Two varieties of Kochia scoparia were used as materials, different plant growth retarders and different concentrations were used to treat Kochia scoparia. The growth indexes of plant height, crown width and main stem diameter under different treatments were determined. [Result]The results showed that there was significant difference between the effect of two kinds of retarders by different concentrations in seedling height and crown width. Paclobutrazol treatment with 1 000 mg / L had the best dwarfing effect on high growth,crown width and main stem diameter, followed by 2 000 mg / L. Under chlormequat treatment, 4 000 mg / L had the best dwarfing effect on high growth and crown width, followed by 8 000 mg / L. In terms of ornamental effect, 500 mg / L paclobutrazol had the best ornamental effect on Kochia scoparia ‘Red feather’, followed by 8 000 mg / L chlormequat. 2 000 mg / L chlormequat had the best ornamental effect on Kochia scoparia ‘Early Red Flame’, followed by 2 000 mg / L paclobutrazol. [Conclusion]The growth of seedling height and crown width of Kochia scoparia could be effectively inhibited by paclobutrazol and chlormequat, and the overall ornamental effect could be improved. [ABSTRACT FROM AUTHOR]