| 3种疏除剂在梨树疏花疏果上的效应 |
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| 引用本文： | 杨刚,张杰,田佶,姚允聪.3种疏除剂在梨树疏花疏果上的效应[J].北京农学院学报,2017,32(1). |
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| 作者姓名： | 杨刚 张杰 田佶 姚允聪 |
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| 作者单位： | 北京农学院植物科学技术学院/北京林果业生态环境功能提升协同创新中心,北京,102206;北京农学院植物科学技术学院/北京林果业生态环境功能提升协同创新中心,北京,102206;北京农学院植物科学技术学院/北京林果业生态环境功能提升协同创新中心,北京,102206;北京农学院植物科学技术学院/北京林果业生态环境功能提升协同创新中心,北京,102206 |
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| 基金项目： | “十二五”国家科技计划课题 |
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| 摘 要： | 【目的】疏花疏果是梨树栽培管理中的重要措施,可以减少树体营养的浪费,克服梨树大小年现象,提高果实品质。【方法】对‘黄金’梨和‘丰水’梨两个品种的盛花期和幼果期分别采用石硫合剂、萘乙酸和乙烯利3种疏除剂进行喷布处理。【结果】在2个品种的盛花期喷布1.004g/mL石硫合剂对梨树的疏除效果好,坐果率分别达到7.47%和13.26%。在盛花期喷布15mg/L萘乙酸对梨树疏除效果好,疏除率达到86%左右,但在幼果期喷布效果不明显。在盛花期和幼果期喷布乙烯利对‘黄金’梨的疏除效果较好,喷布400mg/L和600mg/L较适宜,花朵坐果率分别达到5.37%和42.92%左右,与人工疏除率基本相同;在盛花期喷布500 mg/L乙烯利对‘丰水’梨的疏除效果较好,疏除率可达到86.36%,但在幼果期喷布疏除效果不明显。【结论】正确使用化学疏除剂对梨树疏花疏果具有重要作用,本试验对果品优质生产具有一定的指导意义。
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| 关 键 词： | 石硫合剂 萘乙酸 乙烯利 梨树 疏花疏果 |
Study on thinning effects of three thinning agents to pear flowers and fruits |
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| YANG Gang,ZHANG Jie,TIAN Ji,YAO Yuncong.Study on thinning effects of three thinning agents to pear flowers and fruits[J].Journal of Beijing Agricultural College,2017,32(1). |
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| Authors: | YANG Gang ZHANG Jie TIAN Ji YAO Yuncong |
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| Abstract: | Objective]Flower and fruit thinning are the important measures in pear cultivation.It can reduce waste of nutrition,overcome the'Big-Small years' phenomenon and improve the quality of pear fruit.Methods]Lime sulphur,Naphthalene acetic acid (NAA) and Ethephon (ETH) were sprayed as thinning agents with different concentration on two pear varieties of 'Whangkeumbae'and'Housui'at full-bloom and young fruit stage.Results]The optimal treatment of Lime sulphur was 1.004 mg/mL on both of pear varieties at full-bloom stage,and the setting fruit rates were 7.47 ％ and 13.26 ％,respectively.The best treatment of NAA was 15 mg/L on both of pear varieties at the full-bloom stage,the rate of thinning was 86 ％,while there is no obvious thinning effect of NAA at young fruit stage.The best thinning effect of ETH were 400 mg/L and 600 mg/L at full-bloom stage and young fruit stage in'whangkeumbae',respectively.The thinning rates of ETH were 5.37 ％ and 42.92 ％ at 400 mg/L and 600 mg/L of concentration,similar to artificial thinning.The thinning effect of ETH with 500 mg/ L is better than other treatments at full-bloom stage in'Housui'and the thinning rate was 86.36 ％,but there is no obviously thinning effect at young fruit stage.Conclusion]Using chemical agents with optimal concentration is important to flowers and fruits thinning in pear trees. |
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| Keywords: | lime sulphur naphthalene acetic acid ethephon pear tree thinning on flowers and fruits |
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