树干自流式注药法中影响药剂吸收因子研究  

Factors on Absorption of Trees to Imidacloprid Liquid Formulation with Auto Flowing Trunk Injection

作　　者：田鹏鹏[1] 冯超[1] 唐光辉[1,2] 冯俊涛[1] 张兴[1] 

机构地区：[1]西北农林科技大学无公害农药研究服务中心陕西省生物农药工程技术研究中心,杨凌712100 [2]西北农林科技大学林学院,杨凌712100

出　　处：《林业科学》2009年第6期92-97,共6页Scientia Silvae Sinicae

基　　金：国家"十一五"科技支撑计划项目(2006BAD08A113);陕西省自然科学基金项目(2007C113);陕西省科技攻关项目(2008K01-01)

摘　　要：采用4%吡虫啉注干液剂,研究自流式注药过程中注药孔孔径、注药器通气孔孔径、树种、树干基径及季节等因素对药剂吸收的影响。结果表明:注药孔孔径及树种对药剂吸收影响较大,其次为树干基径和季节,注药器通气孔孔径对药剂吸收的影响不显著。5mm注药孔孔径下树体对药剂的吸收显著高于2,3mm注药孔,注药后10h树体对药剂的吸收一般可达6～8mL;两种通气孔孔径(0.5,1mm)下树体对药剂吸收的速度差异较小;9种树种对药剂的吸收能力依次为:毛白杨>白梨>李>侧柏>水杉>悬铃木、国槐、垂柳>合欢;树干基径对药剂吸收的影响因树种而异,国槐表现为基径较大的树体对药剂的吸收能力较强,侧柏与之相反,毛白杨不同基径树体对药剂吸收的差异不显著;5月份树体对药剂的吸收能力高于9月份。Factors, such as diameter size of injection holes on trees, diameter size of injector blowholes, trees species, trunk basal diameter and season changes, which might affect the absorption to 4% Imidacloprid liquid formulation （ILF） by trees, were analyzed with auto flowing trunk injection. The results showed that the most important factors were diameter size of injection holes on trees and trees species, followed by trunk basal diameter and season, however, the diameter size of injector blowholes had no significant effect on absorbing efficiency. The amount of absorbed ILF reached to 6 - 8 mL in 10 h after injection with 5 mm diameter of injection holes on trees, which was much greater than that with 2 mm and 3 mm diameters. There were no significant differences in ILF absorbing efficiency between 0.5 mm and 1.0 mm diameters of injector blowholes. The absorbability for nine tree species were in turn as： Populus tomentosa 〉 Pyrus bretschneideri 〉 Prunus salicina 〉 Platycladus orientalis 〉 Metasequoia glyptostroboides 〉 Platanus acerifolia, Sophora japonica and Salix babylonica 〉 Albizia julibrissin. The trunk basal diameters had different effects on absorbability according to different tree species. For Sophora japonica the bigger trunk basal diameter had the higher absorbability whereas for Platycladus orientalis the smaller trunk basal diameter had the higher absorbability. There was no obvious difference in the absorbability over different trunk basal diameters for Populus tomentosa. As to the season factor, the absorbability in May was higher than that in September.

关 键 词：树干注药 注药孔孔径 通气孔孔径 树种 药剂吸收 

分 类 号：S763[农业科学—森林保护学]