Impact Evaluation Model of the Effects of Planned Farmland Accumulation on Traveling Efficiency in Paddy Field Farms

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  • Morisawa Kensaku
    Graduate School of Biological Resource Environment, Ishikawa Prefectural University
  • Yamashita Ryohei
    Faculty of Biological Resources and Environment, Ishikawa Prefectural University

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  • 水田農業における農地集積の計画性が圃場巡回の効率性に及ぼす影響予測モデル

Abstract

<p>We developed a simulation model of optimal traveling routes to investigate how the planned accumulation of farmland can increase traveling efficiency in paddy field farms. To that end, we used total travel distance and time as indices to compare planned farmland accumulation with spatially unregulated farmland accumulation. We assume that the number of newly leased fields gradually increases in increments of 20-100%, relative to the number of currently managed fields. In addition, we adjust model variables by combining car speed, walking speed, and time taken to get on and off the car. The optimal route was identified by a combination of the nearest neighbor method and the 2-opt method. Results show that both travel distance and time increase in proportion to the number of managed fields in the case of spatially unregulated farmland accumulation, where leased land increased irregularly. Conversely, travel distance gradually increased in the case of planned farmland accumulation which leased land was densely arranged in. The differences in travel time efficiency between the two farmland accumulation systems tend to increase gradually with the number of newly leased farms. Incorporation of working time at each visiting point can further expand the scope and application of the model in the future.</p>

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