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乙烯利属化学生长抑制剂,应用在苹果树上具有控制果枝生长,诱导花芽的作用。为探索乙烯利的使用技术,自1985年以来,我们连续在冀县黄庄,前辛寨和白漳果园等十几个试区进行了试验,取得了较理想的效果。试验分别进行了不同浓度乙烯利在不同苹果品种上的药效试验,供试品种为国光、元帅、美夏、白龙、金冠和红玉。在新梢旺盛生长期喷施乙烯利对国光苹果枝条的长度、粗度,节间步增长均有影响。喷施2000ppm以内乙烯利随浓度的增加,枝长、节间变短;枝径变粗;成花指数变高,由此可见喷施2000ppm乙烯利效果较佳。不同苹果品种喷施乙烯利对各品种影响程度有差异。喷施1000ppm乙烯利对枝条生长均有抑制作用:其中红玉效果最佳,其次是国光、美夏、金
Ethephon chemical growth inhibitor, used in apple trees with fruit tree growth control, the role of flower buds. In order to explore the use of ethephon, since 1985, we have continuously tested more than a dozen pilot areas such as Huangzhuang, Qianxinzhai and Baixi Orchards in Hebei, and achieved satisfactory results. The experiments were conducted at different concentrations of ethephon in different apple varieties on the efficacy test, the test varieties Guoguang, Marshal, the United States summer, white dragon, golden crown and red jade. In the vigorous growth of shoots ethephon spray Guoli apple branches of length, thickness, internode steps have an impact. Spraying within 2000ppm ethephon with increasing concentration, branch length, internode becomes shorter; branch diameter becomes thick; into flower index becomes high, we can see spraying 2000ppm ethephon is better. Different varieties of apple ethephon sprayed on the impact of different varieties have differences. Spraying 1000ppm ethephon inhibited the growth of shoots: the best was ruby, followed by Guoguang, Mei Xia, Jin