| 代秋芳1, 3, 洪添胜1, 2*, 宋淑然1, 3, 薛秀云3, 郑君彬3.山地管道恒压喷雾中喷雾压力和孔径对雾滴粒径的影响[J].植物保护,2016,42(4):56-63. |
| 山地管道恒压喷雾中喷雾压力和孔径对雾滴粒径的影响 |
| Influences of spray pressure and pore diameter on droplet diameter ofpipeline constant pressure spray in mountains |
| 投稿时间：2015-12-11 修订日期：2016-01-14 |
| DOI： |
| 中文关键词: 山地果园 管道恒压喷雾 雾滴粒径参数 喷雾压力 孔径 |
| 英文关键词:mountainous orchard pipeline constant pressure spray droplet diameter parameter spray pressure pore diameter |
| 基金项目:广东省自然科学基金（2015A030310398）；现代农业产业技术体系建设专项资金（CARS-27）；公益性行业（农业）科研专项（201203016）；广东省“扬帆计划”引进创新创业团队专项（201312G06）；广东省科技计划项目（2015B090901031） |
| 作者 | 单位 | | 代秋芳1, 3, 洪添胜1, 2*, 宋淑然1, 3, 薛秀云3, 郑君彬3 | 1. 南方农业机械与装备关键技术教育部重点实验室, 广州 510642
2. 华南农业大学工程学院, 广州 510642
3. 华南农业大学电子工程学院, 广州 510642 |
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| 中文摘要: |
| 为提高农药利用率, 研究山地果园管道恒压喷雾系统中喷雾压力和孔径对雾滴粒径参数的影响, 利用激光粒度仪, 测量3种孔径空心圆锥雾喷头在8种压力下的6种雾滴粒径参数数据, 分析各粒径级雾滴的分布情况, 给出雾滴粒径大小及其随压力和孔径的变化趋势, 进行了雾滴参数的多元线性回归, 建立基于压力的雾滴参数模型。结果表明:粒径大于100 μm的雾滴(小于0.3%)和粒径为0~20 μm的雾滴(小于0.5%)可忽略不计, 雾滴粒径主要分布于20~40 μm(79.5%~92.8%); 雾滴均较细小, 全部为气溶胶; 孔径越小, 压力越大, 雾滴越细小; 6种雾滴粒径参数与孔径和压力均有良好的二元线性关系(R2分别为0.928、0.956、0.949、0.949、0.889和0.815); 6种雾滴粒径参数均随压力呈二次多项式变化规律, 决定系数R2均达到了0.894以上。研究结果对山地果园管道恒压喷雾中喷头的选型、喷雾压力的调整及喷雾效果的优化有重要参考意义。 |
| 英文摘要: |
| In order to increase the pesticide usage efficiency and study the influences of spray pressure and nozzle pore diameter on droplet diameter parameters of pipeline constant pressure spray in mountainous orchards, five important aspects were researched with laser particle analyzer through measuring six types of droplet diameter parameters for three types of pore diameters under eight types of pressures. The droplet distribution of different droplet diameter classes was analyzed; the variation tendencies of droplets with different pressures and nozzle pore diameters were measured; multiple linear regression of droplet diameter parameters was conducted, and droplet diameter parameter models were built based on pressure. The results showed that droplets with diameters more than 100 μm (<0.3%) and 0-20 μm (<0.5%) could be neglected, and the main droplet diameters were 20-40 μm (79.5%-92.8%). Droplets were all tiny, and the major type was aerosol. The smaller the pore diameter of the nozzle, the higher the pressure, and the tinier the droplets. Six types of droplet diameter parameters influenced by pressure and pore diameter could all meet the binary linear equations (R2 was 0.928, 0.956, 0.949, 0.949, 0.889 and 0.815); meanwhile, the relationships between six types of droplet diameter parameters and pressure could all be described by quadratic polynomial equations (R2 were all more than 0.894). The results provide valuable references for selecting nozzle, adjusting spray pressure and optimizing spray effect of pipeline constant pressure spray in mountainous orchards. |
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