在日本北部的肖奈平原建立的农电压系统中,大米产量和能源平衡
Hisashi Nasukawa1, Yoshiki Kuwabara1, Kenichi Tatsumi2
1Faculty of Agriculture, Yamagata University, Tsuruoka, Japan.
The Science of the total environment
|January 4, 2025
概括
农电压系统 (AVS) 生产作物和电力,但将大米的光线减少高达39%,影响产量. 最初的能量平衡是负的,但AVS预计将在两年内实现正能量平衡.
科学领域:
- 农业科学 农业科学
- 可再生能源工程可再生能源工程
- 环境科学 环境科学
背景情况:
- 农电系统 (AVS) 在共享土地上整合了作物生产和太阳能发电.
- 虽然AVS承诺可再生能源和粮食安全,但其能源平衡需要彻底调查,特别是在田等各种农业环境中.
研究的目的:
- 为了确定三年来在田中AVS的能量平衡.
- 评估AVS对大米生长,产量和光线可用性的影响.
- 确定优化AVS性能的策略.
主要方法:
- 在2021年在肖奈平原的田建立了AVS.
- 从2021年到2023年监测了大米的生长,产量和发电.
- 在光伏 (PV) 面板下测量了光合作用光子流量密度 (PPFD).
主要成果:
- 在光伏电池板下,PPFD下降了26-39%,导致大米生长和产量减少了20%以上.
- 最初的能源平衡为-3102.47 GJ·ha-1,主要是由于安装能源成本.
- 该系统产生了2083.46 GJ·ha-1的能量,这表明在两年内可能出现正能量平衡.
结论:
- 在大米田中实施AVS显著减少了大米的光线供应,影响了作物产量.
- 阿维斯的初始能源赤字被能源生产所抵消,大约两年后预计会出现正余额.
- 优化AVS性能需要模拟PPFD和作物生长,可能通过可移动的光伏电池板来调整光线条件.
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