BA不同浓度和喷布次数对新红星一年生苗木侧枝形成的影响

Effect of BA Concentration in Repeated Application on Branch Development of One year old Nursery Starkrimson Apple Tree

当新红星苹果苗高８０～９０ｃｍ时，对其６０ｃｍ以上叶片分别采用０．０２％、０．０４％、０．０６％的ＢＡ处理。结果表明，ＢＡ不仅有打破一年生新红星苗木夏芽休眠和促发侧枝形成的作用，而且不同浓度ＢＡ对侧枝的形成和侧枝长度有不同的影响。高浓度ＢＡ对侧枝形成和侧枝总长度最有效，但减少了１０ｃｍ以上侧枝的平均长度。侧枝平均长度随ＢＡ浓度的增加而明显缩短。喷布次数与侧枝长度无关。

At the time of treatment these trees were 80-90 cm tall. The upper leaves of trees 60 cm above ground were sprayed by BA. The treatment were not only effective in breaking domancy of one year old starkrimson tree, but also the different concentration of BA application proved various results on the number and on the length of laterals. For starkrimison tree the highest BA concentrtion was most effective on total number of lateral shoots and on total shoot growth. But this treatment reduce the average length of lateral of longer than 10 cm. The average laterals is significantly decreased with BA concentration increasing. The repetition times of BA application didnt affect shoot length.