Non-destructive measurement of plant growth and nitrogen status of pearl millet with low-altitude aerial photography
Non-destructive measurement of plant growth and nitrogen status of pearl millet with low-altitude aerial photography
复制标题
低空航拍无损测量珍珠粟植株生长及氮素状况
DOI：
10.1080/00380768.1997.11863705
复制
发表时间：
1997
期刊：
影响因子：
--
通讯作者：
H. Marschner
中科院分区：
文献类型：
--
作者：
B. Gérard;A. Buerkert;P. Hiernaux;H. Marschner
基于计算机的图像分析已导致卫星图像和航空照片在农业中的广泛使用。然而，由于卫星图像分辨率低和航空照片成本高，在田间试验中应用遥感技术非破坏性地确定植物干物质和养分状况受到限制。利用24 × 36 mm低空（50 ~ 500 m）气球（低风条件）或风筝（大风条件）拍摄的真彩色和红外航空照片，用一种简单的方法测定了灌木Guiera senegalensis J.F. Gmel.和宽间距珍珠粟（Pennisetum glaucum L.）种植山。田间试验结果表明，二者之间存在密切的相关性（G.结果表明，在玉米群体中，单株收获的总干物质与冠层面积的相关系数r = 0.74;珍珠粟群体中单株收获的总干物质与冠层面积的相关系数r = 0.74。
AbstractComputer based image analysis has led to a widespread use of satellite images and aerial photographs in agriculture. However, the application of remote sensing techniques for non-destructive determinations of plant dry matter and nutrient status in field trials has been limited due to the low resolution of satellite images and the high cost of aerial photographs. A simple method based on 24 × 36 mm low-altitude (50 to 500 m) true colour and infra-red aerial photographs taken from a balloon (low-wind conditions) or a kite (high-wind conditions) was used to determine the total dry matter of coppices of the shrub Guiera senegalensis J. F. Gmel. and widely-spaced pearl millet (Pennisetum glaucum L.) planting hills. Results from field trials showed a close relationship (r2 = 0.84 for G. senegalensis and r2 = 0.74 for millet) between the harvested total dry matter of single plants and the plant canopy area determined from the digital analysis of aerial photographs.For pearl millet, differences in the di...