遙測科技在精率農業之應用-土壤與作物空間變異之檢測
Other Title
Application of Remote Sensing in Precision Agriculture-Detection of Spatial Variability of Soils and Crops
Journal
水稻精準農業(耕)體系之研究
Part Of
水稻精準農業(耕)體系之研究
Pages
93-103
ISBN
957-02-5829-2
Date Issued
2000-04
Date
2000-04
Author(s)
申雍
Yuan Shen
Abstract
由於土壤性質、肥料施用、與作物吸收土自然存在之變異，導致田間作物生長具有空間分佈不均的現象。「遙測」可以精確和快速的對大面積的田區進行頻繁的觀測，提供田間作物動態生育情形的空間分佈資料。本文中回顧了葉片、土壤、和植被的光譜特性與影響因子，以及有關檢測土壤性質和作物生長性狀與產量的遙測方法。目前的遙測技術雖可達到提供「精準農業」相關資訊的最低要求，但仍有許多關於土壤和作物的基本遙測資料需要累積，新的偵檢技術需要發展，影像資料的正確性和處理的時效性也需提高，才能適當滿足「精準農業」中對遙測技術的要求。
The spatial heterogeneity of soil properties and variations due to fertilizer application and nutrient uptake by roots result in spatial variation of crop growth and productivity in field. Remote sensing can provide accurate, prompt, and frequent survey for large area. Accordingly, maps regarding spatial distribution of dynamic crop growth in the field can thus be provided. In this review, spectrum characteristics of leaf, soil and canopy and factors affect those characteristic are introduced. Techniques to detect spatial variation of soil properties and crop growth and productivity are also discussed. It is concluded that the present remote sensing techniques can barely satisfy the requirement of precision agriculture. In order to satisfy the requirement, basic spectrum information regarding soils and crops need to be accumulated, new detection techniques need to be developed, and the accuracy and processing time of acquired images also need to be improved.
Subjects
精準農業
空間變異
感測器
遙測
Precision agriculture
Spatial variability
Sensors
Remote sensing
Publisher
農業試驗所
Type
book chapter
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