从土壤中可用的的分布来预测大米的存放风险,使用大米田中的UAS图像
Nozomi Kaneko Sato1,2, Takeshi Tsuji3, Yoshihiro Iijima4
1Graduate School of Bioresources, Mie University, Tsu 5148507, Japan.
Sensors (Basel, Switzerland)
|July 29, 2023
概括
减少基底化肥对于受欢迎的Koshihikari大米至关重要,以防止沉积. 高土壤可用 (SAN) 与住宿相关,即使在最佳水平内,也需要减少肥料应用.
科学领域:
- 农业科学 农业科学
- 农业学是一种农业学.
- 遥感 遥感 遥感 遥感
背景情况:
- 储存大米会降低产量和质量,特别是在易受影响的品种中,如Koshihikari.
- 在200毫克以上的土壤可用 (SAN) 的过剩需要减少基底化肥的应用.
- 商业农民经常使用一次性基底肥,可能导致过高的水平.
研究的目的:
- 调查科希希卡里大米中大米沉积和土壤可用 (SAN) 之间的关系.
- 通过无人机系统 (UAS) 图像来评估安置严重性和SAN的空间分布.
- 为优化肥料应用提供建议,以防止沉积.
主要方法:
- 利用无人机多光谱图像来分析天花板高度模型的住宿严重性.
- 开发了一个SAN估计方程,使用对绿色和红色带像素数字数字的回归分析.
- 通过拉斯特化估计的SAN值,创建了一个1米网状土壤肥沃度地图.
主要成果:
- 科希希卡里田的一个沉积的区域与更高的SAN水平相吻合.
- 在米的倾斜角度和估计的SAN之间观察到负相关性.
- 即使SAN水平处于推的最佳范围 (80-200 mg N kg-1),也发生了住宿.
结论:
- 当总可吸收 (SAN + 肥料) 超过200 mg N kg-1时,应减少对Koshihikari大米的一次性基础肥料的应用.
- 使用无人机的SAN和安置严重性的空间映射对于精准农业是有效的.
- 优化管理是减轻大米沉积和提高作物产量和质量的关键.
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