Commercial robotic lawnmowers have recently gained popularity in orchards. However, more widespread adoption of this technology in orchards requires optimization of the weed cutting height and cutting frequency. To determine the optimum weed cutting height, we tested a robotic lawnmower (Automower 430X, Husqvarna, Sweden) in a Japanese pear orchard at Ibaraki University, Ami, Japan. The mower was operated on short (weed height = 175 ± 42 mm (±SD), medium-sized (weed height = 286 ± 87 mm) and tall weeds (weed height = 404 ± 118 mm). To determine the optimum cutting height and frequency, we used a weed growth model and data from photogrammetry, weed mechanical properties, and field performance. Our analysis indicates that the mower should be operated when the height of the weed reaches 20 cm. To maintain weed height at <20 cm, the mower, on average, should be operated 10 h week⁻¹ between April 5 and October 13. We believe that the proposed mowing schedule would significantly help the mower tackle field challenges in the orchard.

中文翻译：

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日本梨园机器人割草机全年割草计划优化

商用机器人割草机最近在果园中广受欢迎。然而，在果园中更广泛地采用该技术需要优化杂草切割高度和切割频率。为了确定最佳除草高度，我们在日本亚美茨城大学的日本梨园测试了机器人割草机（Automower 430X，Husqvarna，瑞典）。割草机在短（杂草高度 = 175 ± 42 mm (± SD)、中型（杂草高度 = 286 ± 87 毫米）和高杂草（杂草高度 = 404 ± 118 毫米）。为了确定最佳切割高度和频率，我们使用了杂草生长模型和来自摄影测量、杂草机械特性和田间性能的数据。我们的分析表明，当杂草高度达到 20 厘米时，应操作割草机。为了将杂草高度保持在 <20 cm，割草机应在 4 月 5 日至 10 月 13 日期间平均每周运行 10 小时^-1。我们相信，拟议的割草时间表将显着帮助割草机应对果园的田间挑战。