利用无人机高分辨率图像估算秘鲁北部沿海稻田灌溉系统的蒸散量

IF 1 Q3 AGRICULTURE, DAIRY & ANIMAL SCIENCE
Lía Ramos Fernández, David Junior Quispe Tito, Lisette Altamirano Gutierrez, Camila Leandra Cruz Grimaldo, Javier Alvaro Quille Mamani, Juan Pedro Carbonell Rivera, Jesus Torralba Pérez, Luis Ángel Ruiz Fernandez
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引用次数: 0

摘要

鉴于农业用水日益匮乏、粮食需求增加以及气候变化带来的未来干旱情景,设计有助于降低耗水量的新技术至关重要。在这项研究中,通过应用 METRICTM(利用内化校准的高分辨率蒸散绘图)能量平衡模型,利用高分辨率图像估算了水稻田的蒸散量。为此,对连续漫灌(CF)条件下的 5900 平方米作物和干湿交替灌溉(AWD)条件下的 2600 平方米作物进行了监测,此外还对一些地块进行了横向过滤。在分蘖期和开花期之间进行了 10 次飞行,其中 5 次使用配备 Parrot Sequoia 多光谱相机的 Matrice 210 无人机,5 次使用配备 H20T 热像仪的 Matrice 300 RTK。通过植被指数(NDVI 和 LAI)和辐照度计的读数收集了实地数据,以分别调整多光谱和热图像的信息,并获得地表能量平衡的组成部分。集成灌溉和全自动灌溉的作物蒸散量(ETc)平均值分别为 6.34 ± 1.49 和 5.84 ± 0.41 mm d-1,节水率为 42%,减产率为 14%,为正确的灌溉管理提供了指导。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Estimation of evapotranspiration from UAV high-resolution images for irrigation systems in rice fields on the northern coast of Peru
In view of the growing scarcity of water for agriculture, the increase in food demand and future drought scenarios posed by climate change, it is essential to design new technologies that contribute to lower water consumption. In this research, high-resolution images have been used to estimate evapotranspiration in rice fields by applying the METRICTM (Mapping Evapotranspiration at High Resolution using Internalized Calibration) energy balance model. For this purpose, 5900 m2 of crop were monitored under continuous flood irrigation (CF) and 2600 m2 under alternate wetting and drying irrigation (AWD), in addition to some plots with lateral filtration. Ten flights were conducted between tillering and flowering phases, five flights with a Matrice 210 UAV equipped with a Parrot Sequoia multispectral camera, and five flights with a Matrice 300 RTK equipped with a H20T thermal camera. Field data were collected from vegetation indices (NDVI and LAI), and readings from a radiometer, to adjust information from multispectral and thermal images, respectively, and to obtain the components of the surface energy balance. Mean values for crop evapotranspiration (ETc) of 6.34 ± 1.49 and 5.84 ± 0.41 mm d-1 were obtained for IC irrigation and AWD irrigation, respectively, obtaining a water saving of 42% with a yield reduction of 14%, providing a guide for proper irrigation management, however, it is suggested to use the model to optimize yield by obtaining critical thresholds for optimal application of AWD in the face of water resource scarcity.
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来源期刊
Scientia Agropecuaria
Scientia Agropecuaria AGRICULTURE, DAIRY & ANIMAL SCIENCE-
CiteScore
3.50
自引率
0.00%
发文量
27
审稿时长
12 weeks
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