| 潘波,王冰洁,刘丹,耿紫琼,李松刚,林勇,姜蕾.固定式管道高压喷雾系统雾滴在荔枝树冠层的沉积分布[J].中国南方果树,2026,55(1): |
| 固定式管道高压喷雾系统雾滴在荔枝树冠层的沉积分布 |
| Droplets deposition distribution of a fixed pipe high-pressure spray system in litchi canopy |
| 投稿时间：2024-10-23 修订日期：2024-12-12 |
| DOI：10.13938/j.issn.1007-1431.20240513 |
| 中文关键词: 固定式树冠管道高压喷雾系统 雾滴 沉积分布 荔枝树冠层 |
| 英文关键词:fixed pipe high-pressure spray system droplet deposition distribution litchi canopy |
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| 中文摘要: |
| 为了探究固定式管道高压喷雾系统雾滴在荔枝树冠层的沉积分布。研究了喷雾系统压力、喷雾时间、喷头安装方式、环境温湿度和风速对固定式管道高压喷雾系统雾滴分布效果的影响。结果表明固定式管道高压喷雾系统在压力为0.55 MPa(80 psi),喷雾时间60 s,喷头向下安装时雾滴的沉积分布效果最好。固定式管道高压喷雾系统雾滴体积中值直径(VMD)在60 μm左右,容易受到环境因素影响而发生蒸发和飘移。环境温湿度对雾滴沉积分布影响较大,当环境温湿度为39.0 ℃和45%时叶片正面雾滴密度较温温湿度为31.8 ℃和68%时下降55.66%-68.61%,叶片背面雾滴密度下降28.37%-71.75%。环境风速对雾滴沉积分布也有较大影响。在使用固定式管道高压喷雾系统时应尽量避免高温低湿及有风的气候条件。 |
| 英文摘要: |
| The purpose of this study was to investigate the deposition distribution of droplets in the canopy of litchi trees by a fixed pipe high-pressure spray system. The effects of spray system pressure, spray time, nozzle installation mode, ambient temperature, humidity and wind speed on droplet distribution were studied. The results show that the fixed pipe high-pressure spray system has the best effect when the pressure is 0.55 MPa (80 psi), the spray time is 60 s, and the nozzle is installed downward. The volume median diameter (VMD) of droplets of the fixed pipe high-pressure spray system is about 60 μm, which is easy to evaporate and drift due to environmental factors. When the ambient temperature and humidity were 39.0℃ and 45%, the droplet density in front of the leaf decreased by 55.66%-68.61%, and the droplet density in back of the leaf decreased by 28.37%-71.75%. The ambient wind speed also has a great influence on the droplet deposition distribution. Therefore when using the fixed pipe high-pressure spray system, it should be avoided in the case of high temperature, low humidity and wind. |
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