GA_3对穗颈伸出长度、第一节间长度、第二节间长度和茎长有明显的促进作用，表现为随着浓度的增加的趋势。
GA_3 had promoting effect to the elongation ofpanicles extension, uppermost internode, the second internode. and the length of stem.
GA_3对穗颈伸出长度、第一节间长度、第二节间长度和茎长有明显的促进作用，表现为随着浓度的增加的趋势。
GA_3 had promoting effect to the elongation ofpanicles extension, uppermost internode, the second internode. and the length of stem.
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