多效唑?qū)ε柙浴畩W斯特’北美冬青生長(zhǎng)和坐果的影響

余有祥，查　琳，徐旻昱，王麗英，徐　浩

(1.杭州潤(rùn)土園藝科技有限公司，浙江　杭州　310020;2.無錫市林木種苗管理站，江蘇　無錫　214064;3.杭州市林業(yè)科學(xué)研究院，浙江　杭州　310006;4.杭州市余杭區(qū)林業(yè)工作站，浙江　杭州　311121;5.浙江滕頭園林股份有限公司，浙江　寧波　315010)

多效唑?qū)ε柙浴畩W斯特’北美冬青生長(zhǎng)和坐果的影響

余有祥1，查琳2，3，徐旻昱4，王麗英5，徐浩4

(1.杭州潤(rùn)土園藝科技有限公司，浙江杭州310020;2.無錫市林木種苗管理站，江蘇無錫214064;3.杭州市林業(yè)科學(xué)研究院，浙江杭州310006;4.杭州市余杭區(qū)林業(yè)工作站，浙江杭州311121;5.浙江滕頭園林股份有限公司，浙江寧波315010)

摘要:以1年生‘奧斯特’北美冬青扦插容器苗為試驗(yàn)材料，采用葉面噴施和土壤澆施2種方法，研究了多效唑?qū)ζ渑柙悦缟L(zhǎng)和坐果的影響。結(jié)果表明:多效唑可以有效矮化盆栽北美冬青的株型，提高封頂枝比例，使株型緊湊飽滿，以土壤澆施150 mg/L(原藥1 000倍稀釋液)，或葉面噴施300 mg/L(原藥500倍稀釋液)多效唑?yàn)橐恕Ｔ谶m宜的處理質(zhì)量濃度下，噴施當(dāng)年效果優(yōu)于澆施，澆施第2 a效果優(yōu)于噴施;從試驗(yàn)結(jié)果看，多效唑?qū)Ρ泵蓝嗯柙悦绲淖麛?shù)量有一定的負(fù)作用。

關(guān)鍵詞:北美冬青;多效唑;葉面噴施;土壤澆施;坐果

Effect of Paclobutrazol on growth and fruit setting of potted Ilex verticillata‘Oosterwijk’

YU You-xiang1，ZHA Lin2，3，XU Min-yu4，WANG Li-ying5，XU Hao4

(1.Hangzhou Runtu Horticultural Technology Limited Company，Hangzhou 310020，China; 2.Wuxi Forest Seed and Seedling Management Station，Wuxi 214064，China; 3.Hangzhou Academy of Forestry，Hangzhou 310006，China; 4.Forestry Station of Yuhang，Hangzhou 311121，China;5.Zhejiang Tengtou Landscape Limited

Abstract:With the annual potted Ilex verticillata‘Oosterwijk’as test material，effects of paclobutrazol (PP333) on its growth and fruit setting by two methods of application(foliage spray and root drench) were determined.The results showed that PP333could effectively dwarf the height of plants and raise the proportion of cap branches to make them compact.The best treatment was regarded as 150 mg/L PP333 (1 000 times dilution) applied as root drench，or 300 mg/L PP333(500 times dilution) applied as foliage spray.At suitable concentration，singly，the effect of foliage spray was better than that of root drench in the first year while the effect of root drench better than that of foliage spray in the second year.We also found out that PP333 had side effects on fruit setting to some extent.

Key words:Ilex verticillata;Paclobutrazol;Foliage spray;Root drench;Fruit setting

北美冬青(Ilex verticillata)為冬青科冬青屬落葉灌木，原產(chǎn)美國(guó)東北部，耐濕性、抗寒性強(qiáng)，分布及應(yīng)用廣泛［1］。2006年，杭州潤(rùn)土園藝科技有限公司從國(guó)外引進(jìn)了其中的‘Oosterwijk’(奧斯特)品種。該品種冬季果色鮮紅艷麗，最佳觀賞期正值元旦、春節(jié)前后，富有喜慶、吉祥氣氛，可作為切枝或盆栽觀賞，也可應(yīng)用于園林景觀［2］。……