Weed Control System by Water Jet Technology

采用喷水技术的杂草控制系统

• 批准号: 12460110
• 负责人: OKAMOTO Tsuguo
• 金额: $ 9.09万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2000
• 资助国家: 日本
• 起止时间: 2000 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-12460110/
• 关键词: weed control; application without chemicals; water jet; mechanical weeding; precision farming; image processing; 無農薬除草; 物理的除草法; 雑草防除管理; 精密農法

There is a subject to solve in the present weeding work. This research proposes the precise weeding system which doesn't use a herbicide. It is how to do control of weeds without giving an environment a bad influence.This research tried to contribute to the continuous biological production. This year was the final year, and the experiment of the cutting condition and a summary were done.1. Relationship between cutting effect and pump pressureCutting was often done as much as pump pressure was high. And, the range that it was suitable for every pump pressure existed in the cutting position. The range showed a tendency of going away as much as it was as close as the high pressure to the nozzle and it became low pressure.2. The most suitable direction of water jet beam for cutting weed plantAs for the beam direction of water jet as well, it was an important parameter. It was found out that effect was high when it was cut in the range in the jetting direction 30°to 45 °toward weed plant body.3. Relative speed between water jet nozzle and weed plantThough a relative speed was changed, an influence on cutting effect didn't get clear. It guessed the reason that cutting was done momentarily.

在当前的除草工作中，有一个课题需要解决。这项研究提出了一种不使用除草剂的精确除草系统。如何在不对环境造成不良影响的情况下控制杂草，本研究试图为生物生产的可持续发展做出贡献。今年是最后一年，进行了插穗条件试验和总结。切割效果与泵压力的关系切割通常是在泵压力高的情况下进行的。并且，在切割位置存在适用于每种泵压力的范围。射程表现出与接近喷嘴的高压一样远的趋势，并且变得低压力。水射流束切割杂草的最适方向也是水射流束向的一个重要参数。研究发现，在向杂草株体喷射方向30°~45°范围内切割时，效果较好。水射流喷嘴与杂草的相对速度虽然改变了相对速度，但对切割效果的影响并不明显。它猜测了切割是瞬间进行的原因。