西北林学院学报2011，Vol.26Issue(4)：142-147,6.
两种生长延缓剂对绿竹矮化作用的研究
Dwarfing Effect of Two Retardants on Dendrocalamopsis oldhami
摘要
Abstract
Two retardants PP333 and B9 were applied on Dendrocalamopsis oldhami either by spraying or injecting method to examine the dwarfing effects on the bamboos. The height of the whole plant, the height under branch, and the leaf section were used as indices to measure the influences of two chemicals and two methods. The results showed that: (1) different concentrations of the retardants and application methods had different effects. Compared to the control, bamboo height, the height under branch and the leaf section indices were significantly different under different concentrations of PP333 and B9. No significant differences were found in the height under branch between two different application methods, while significantly different impacts were observed in bamboo height and the leaf section indices, and the spraying method was better than injection. (2) The dwarfing effects of the two chemicals were not significant at very low or high concentrations. The optimal concentration of PP333 800 mg · L-1 , with this concentration, indices of the height, height under branch, and leaf section of applying were -62.91％, -49.70％and 43.58％ of the control, respectively. The optimal concentration of B9 was 2 500 mg · L-1, in which,the three indices above mentioned were -63.53％, -54.25％ and 51.46％ of the control, respectively.The dwarfing effect of B9 was a little bit better than PP333. The results indicated that two chemicals could effectively reduce the bamboo height, the height under branch, improve the leaf section index, promote branches and enhance plant photosynthesis.关键词
绿竹/多效唑(PP333)/比久(B9)/矮化作用Key words
Dendrocalamopsis oldhami / PP333 / B9/ dwarfing effect分类
农业科技引用本文复制引用
刘碧桃,官凤英,范少辉,封焕英..两种生长延缓剂对绿竹矮化作用的研究[J].西北林学院学报,2011,26(4):142-147,6.基金项目
国家十一五科技支撑项目"笋用竹促成栽培和设施栽培技术"(2006BAD19B0303) （2006BAD19B0303）
