作　　者： ; ; ; ; ;

机构地区： 华南农业大学工程学院南方农业机械与装备关键技术省部共建教育部重点实验室

出　　处： 《农机化研究》 2009年第1期166-169,共4页

摘　　要： 首次提出一种新的变量喷雾的方法—采用控制风机转速以改变风送式喷雾机喷雾雾滴在果树冠层中的沉积量,并进行了喷雾试验。用示踪剂Rhodamine-B与水混合成0.05%浓度的溶液代替农药进行喷雾试验,改变风机的转速在水蒲桃树上进行变速喷雾,采样区域分别为上部(距离地面(4.00±0.2)m)、中部(距离地面(3.05±0.2)m)、下部(距离地面(2.15±0.2)m),各区域又分别在外层及内层采样。借助于荧光分光光度计测定雾滴在蒲桃树上某一区域的沉积量。结果表明:风机转速在1316～1400r/min范围内变化时,雾滴在蒲桃树上的总沉积量与风机转速成正比;风机转速的改变与喷雾雾滴在蒲桃树上不同层间及冠层内外上的沉积变化不显著。 A new method of variable spraying is proposed for the first time in this paper. The droplet deposits in the canopy of fruit tree are altered by controlling the fan speed of air blast sprayer and some corresponding spraying experiments has been carried out. The spraying experiment on the jambul tree has been carried out by using concentration of 0.05 % solution mixed colorant Rhodamine - B with water instead of pesticide while changing the speed of fan, and then calculat ing the droplet deposits in some region of jambul tree using the fluorescence spectrophotometer. The canopy was sampled in three areas： the upside （tallness about 4.00m ±0.2m）, the middle （ tallness about 3.05m±0.2m） and the lower （tallness about 2.15m ± 0.2m）while the three areas were divided into inside and outside. The results show that the total droplet deposition was in direct proportion to the fan speed at 1316r/min - 1400r/min, and the eorrelativity is not remarkable between the fan speed and the droplet deposition on the individual sampling point.

关 键 词： 风送式喷雾机 雾滴沉积 喷雾分布 蒲桃树

领　　域： [农业科学] [农业科学] [农业科学]