[1]王聪博,徐广春,徐德进,等.不同生育期黄欧宝甜椒叶片润湿性分析[J].江苏农业学报,2020,(04):882-887.[doi:doi:10.3969/j.issn.1000-4440.2020.04.011]
 WANG Cong-bo,XU Guang-chun,XU De-jin,et al.Wettability analysis on leaves of Huangoubao sweet pepper at different growth stages[J].,2020,(04):882-887.[doi:doi:10.3969/j.issn.1000-4440.2020.04.011]
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不同生育期黄欧宝甜椒叶片润湿性分析()
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江苏农业学报[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2020年04期
页码:
882-887
栏目:
植物保护
出版日期:
2020-08-31

文章信息/Info

Title:
Wettability analysis on leaves of Huangoubao sweet pepper at different growth stages
作者:
王聪博 徐广春 徐德进 徐鹿 顾中言
(江苏省农业科学院植物保护研究所,江苏南京210014)
Author(s):
WANG Cong-boXU Guang-chunXU De-jinXU LuGU Zhong-yan
(Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China)
关键词:
叶面喷雾甜椒润湿性表面自由能稳定接触角
Keywords:
foliar spraysweet pepperwettabilitysurface free energystatic contact angles
分类号:
S641.3
DOI:
doi:10.3969/j.issn.1000-4440.2020.04.011
文献标志码:
A
摘要:
为了研究叶面理化特性对喷洒的农药雾滴在叶面润湿行为的影响,利用接触角法获得3种测试液(水、丙三醇、二碘甲烷)在不同生育期黄欧宝甜椒叶面上的稳定接触角后,按Van Oss-Chaudhury-Good法估测并分析叶片的界面特性。结果表明,3种测试液在与甜椒不同生育期的叶片接触36 s时为最佳稳定接触角测量时间。苗期、开花期和结果期的甜椒叶片正、反面的表观表面自由能分别为41.46 mJ/m2和40.12 mJ/m2、39.55 mJ/m2和37.67 mJ/m2、34.06 mJ/m2和33.15 mJ/m2。随着生育期的延长,甜椒叶片越来越难被润湿,表观表面自由能的非极性作用分量(γLW)百分率逐渐增加,极性作用分量(γAB)百分率逐渐降低。在同一生育期叶片表观表面自由能分量中,非极性作用分量(γLW)百分率均大于极性作用分量(γAB)百分率。该结果可为辣椒叶面喷雾和特定农药剂型设计提供依据。
Abstract:
In order to study the effects of physicochemical properties of plant leaf surfaces on wettability during foliar spray, static contact angles of a single droplet on sweet pepper leaf surfaces at different growth stages were determined by contact angle method with three test solutions(water, glycerol, diiodomethane). Then the interface characteristics were evaluated by vanOss-Chaudhury-Good (OCG) method. The results indicated that the optimal measuring time of static contact angles was 36 s after the single droplets of three test solutions were in contact with the leaves of sweet pepper at different growth stages. According to the OCG method, the surface free energy(SFE) values of sweet pepper leaf surfaces at seedling, blooming, fruiting stages were 41.46 mJ/m2 and 40.12 mJ/m2, 39.55 mJ/m2 and 37.67 mJ/m2, 34.06 mJ/m2 and 33.15 mJ/m2, respectively. With the extension of the growth period, the sweet pepper leaves were more harder to be wetted. Accordingly, their calculated percentages of non-polar components of the SFE of pepper leaf surfaces were gradually increased. On the contrary, their calculated percentages of polar components were gradually decreased. At the same growth stage, calculated percentages of non-polar components of the SFE of pepper leaf surfaces were greater than those of polar components. The results can provide basis for pepper foliar spray and specific pesticide formulation design

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备注/Memo

备注/Memo:
收稿日期:2019-12-12基金项目:国家重点研发计划项目(2017YFD0200305)作者简介:王聪博(1995-),女,山东莱芜人,本科,研究实习员,主要从事农药应用技术研究。(E-mail)963846560@qq.com通讯作者:徐广春,(Tel)025-84390403;(E-mail)xgc551@163.com。顾中言,(E-mail)guzy@jaas.ac.cn
更新日期/Last Update: 2020-09-08