B_(9.)CCC(矮壮素)对山楂抑长促花效应试验研究

The Study on Effect of the Alar (B_9) and the Cycocel (CCC)on Controlling Shoots Growth and Advancing Flower Formation in the Howthorn

为了抑制山楂幼树新梢生长,在新梢旺长期喷B_9 1000ppm,B_9 2000ppm,B_9 3000ppm;CCC0.3％,CCC0.5％,CCC0.7％浓度。获得了B_9 2000ppm抑制加长生长效果好,节间缩短,不影响增粗;矮壮素0.3～0.7％浓度都显著抑制加长生长,节间显著缩短,其中以0.5％浓度的矮壮素效果最好,B_9与矮壮素对山楂有不同程度的促进花芽形成效果,但矮壮素显著优于B_9。

In order to control shoots growth of howthorn young trees, B9 1000ppm B9 2000ppm, B9 3000ppm and CCC 0.3％, CCC 0.5％, CCC 0.7％ were sprayed on shoots in its vigorious growth period. It has been shown that B9 2000ppm was the best to control growth in extension, the internode was shortened and the growth in thickness was not reduced. CCC 0.3％-0.7％ all could control shoots growth in extension. Among them the CCC 0.5％ was the best. Both B9 and CCC could advance the flower-buds formation of howthorn in different degrees, but CCC Was better than B9.