| 徐志美,王红梅,周民武,李珍,赵碧英,刘珊廷,林子桢,高兴,易显荣.三华李化学脱叶药剂筛选试验研究初报[J].中国南方果树,2024,53(3): |
| 三华李化学脱叶药剂筛选试验研究初报 |
| Preliminary report on the screening experiment of chemical defoliant for Sanhua plum |
| 投稿时间：2024-04-02 修订日期：2024-04-02 |
| DOI： |
| 中文关键词: 三华李 脱叶 药剂筛选 |
| 英文关键词:Sanhua plum Defoliate Drug screening |
| 基金项目:广西重点研发计划项目（桂科AB21196054）；广西特色作物研究院科研基金项目（2023B004）；国家现代农业产业技术体系广西创新团队建设专项（nycytxgxcxtd-2023-13） |
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| 中文摘要: |
| 迫使三华李提早落叶，可以实现三华李二次开花，从而进行反季节促早栽培。以4～5年生三华李果树为对象，通过喷施脱落酸、乙烯利、噻苯隆、石硫合剂等药剂进行生长季脱叶试验。结果表明：全株喷施45%石硫合剂10～15倍液总体效果最好，药后30天脱叶率可达80%以上，老叶脱叶彻底，只剩树体顶端嫩叶，且脱叶速度较缓，有利于树体营养的积累，同时还可起到清园的作用；乙烯利脱叶速度快，效果好，喷药后15天脱叶率达到100%，但易产生药害，对三华李树体影响较大，不推荐后续使用。 |
| 英文摘要: |
| Forcing the early shedding of leaves in Sanhua plum can achieve secondary flowering and facilitate off-season forwarding culture. This study used 5-year-old Sanhua plum fruit trees as materials and conducted the defoliation experiment during the growth season by spraying agentia such as abscisic acid, ethephon, thidiazuron, and lime sulphur. The results showed that spraying a 10 to 15 times liquid of 45% lime sulphur on the entire plant had the best overall effect. After 30 days of treatment, the defoliation rate was more than 80%. The old leaves were completely defoliated, and leaving only the young leaves at the top of tree. The slow rate of defoliation is conducive to the accumulation of nutrients in the tree, and can also play a role in clearing the garden. The defoliation rate of ethephon treatment is 100% after 15 days of spraying, but they cause the phytotoxicity easy and has a great impact on Sanhua plum. Therefore, Ethephon does not recommend subsequent use as an Sanhua plum defoliator. |
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