| 摘要: |
| 【目的】研究普洛马林、KT-30及抽枝宝3种植物生长调节剂对苹果苗木分枝及生长特性的影响，为我国苹果苗木促分枝技术研究提供参考。【方法】以苗木‘长富2号/‘T337’/‘圆叶海棠’为材料，在株高90 cm时，对70 cm处新梢喷施普洛马林（1 000 mg/kg）、KT-30（100 mg/kg），或于特定时间直接芽体涂抹抽枝宝药膏(每克药膏涂芽150~200个），以清水处理为对照，测定不同处理对苹果幼苗分枝数目、分枝长度、分枝高度、地上部分质量及生长指标的影响。【结果】普洛马林、KT 30和抽枝宝均能促进苹果幼苗当年生新梢产生分枝，且分枝数量极显著高于对照，有利于较早形成生产所需的树形。普洛马林处理苗木的株高、茎粗、有效分枝数、分枝高度及根系生长均明显优于KT 30和抽枝宝处理，KT-30与抽枝宝处理间分枝特性无显著差异，KT-30处理根系生长优于抽枝宝处理。【结论】普洛马林对苹果苗木分枝和生长指标有促进作用，可在生产上推广使用。 |
| 关键词: 苹果苗木 普洛马林 KT-30 抽枝宝 分枝技术 |
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| 基金项目:公益性行业（农业）科研专项（201203075-08）；陕西省农业科技创新与攻关项目（2015NY123）；西北农林科技大学科技创新与成果转化专项（NYY2013-14） |
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| Effects of different plant growth regulators on branching and growth characteristics of apple seedlings |
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SUN Shumin,HUO Qiangqiang,LI Gaochao,et al
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| Abstract: |
| 【Objective】This study investigated the effect of three different plant growth regulators including Promalin,KT-30 and Chouzhibao on the growth characteristics and branching of apple seedlings to provide basis for development of branching promoting technology. 【Method】Seedlings of ‘Nagafu No.2’,‘T337’,and ‘Bredia rotundifolia Y.C.Liu et C.H.Ou’ with the height of 90 cm were sprayed with promalin (1 000 mg/kg),KT-30 (100 mg/kg),and Chouzhibao cream (150-200 buds per gram) at 70 cm new tip.The differences in number of branches,branch length,branch height,weight of above-ground part and growth index were measured and analyzed using water as control.【Result】Promalin,KT-30 and Chouzhibao promoted new shoots and the number of branches was significantly higher than CK,which was beneficial to formation of production trees.Promalin was superior to KT-30 and Chouzhibao with better seedling height,diameter,effective branch number,branch height and root growth.KT-30 had no significant difference in branches from Chouzhibao,but the plant height and root growth of KT-30 were better.【Conclusion】Promalin promoted the branching and growth of apple seedlings and can be widely used. |
| Key words: apple nursery stocks promalin KT-30 Chouzhibao branching techology |
