生长延缓剂和环剥对苹果杂种苗童期的影响
过国南,郭兆年,阎淑芝
摘要(Abstract)：
苹果杂交苗播种后26个月,连续四次喷布生长延缓剂加环剥,观察对苹果杂交苗营养生长、开花株率和单株花序数的影响。结果表明:多效唑(PP333)能有效地控制新梢生长和干周增粗;丁酰肼(B9)能控制新梢生长,但对于周增粗的效果不明显。形成花芽的株数和花序数的多少与喷布的生长延缓剂种类和浓度有关。仅环剥的对照无一株开花。多效唑1000ppm+乙烯利1000ppm组合处理的效果最佳,三年生实生苗开花株率达27.0%,平均花序数为2.8个,其次是多效唑1500ppm或乙烯利1000ppm,开花株率分别为21.4%和20.0%。喷布生长延缓剂对提高杂交苗开花株率的作用在处理后第二年仍有一定的效果。
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作者(Author): 过国南,郭兆年,阎淑芝
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