Evaluation of Transpiration Rate Based on the Heat Pulse Method in Sugarcane Field in Tanegashima Island in Kagoshima Prefecture
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- TAKEUCHI Shinichi
- School of Marine Science and Technology, Tokai University
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- MOMII Kazuro
- Faculty of Agriculture, Kagoshima University
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- HIYAMA Hiroki
- Faculty of Agriculture, Kagoshima University
Bibliographic Information
- Other Title
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- ヒートパルス法に基づいた種子島サトウキビ圃場の蒸散量の評価
- ヒートパルスホウ ニ モトズイタ タネガシマ サトウキビ ホジョウ ノ ジョウサンリョウ ノ ヒョウカ
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Abstract
<p>Crop transpiration rate is crucial for managing regional water resources and water productivity. In this study, we assessed crop water requirement, transpiration rate, and potential evapotranspiration rate using soil moisture data, sap flow data, and meteorological data, respectively, in a sugarcane field on Tanegashima Island, Japan. The transpiration rate measured using the heat pulse method (with a value of 1.3) was validated as correct by comparison with values obtained using the weighing and potometer methods. The maximum sap flow rate was calculated to be 548 cm3/d; in addition, the maximum transpiration rate was 6.7 mm/d. On the other hand, maximum soil moisture reduction rate was 4.3 mm/d for estimating crop water requirements. It was inferred that the decrease in soil moisture due to transpiration can be accounted for both by capillary supply a soil layer deeper than 50 cm and by water uptake from roots deeper than 50 cm depth. In addition, there was a high correlation between standard crop evapotranspiration and sugarcane transpiration, indicating a linear functional relationship.</p>
Journal
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- Transactions of The Japanese Society of Irrigation, Drainage and Rural Engineering
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Transactions of The Japanese Society of Irrigation, Drainage and Rural Engineering 87 (2), I_289-I_296, 2019
The Japanese Society of Irrigation, Drainage and Rural Engineering
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Keywords
Details 詳細情報について
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- CRID
- 1390282752369265664
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- NII Article ID
- 130007744572
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- NII Book ID
- AA12240517
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- ISSN
- 18847242
- 18822789
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- NDL BIB ID
- 030233954
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- Text Lang
- ja
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- Data Source
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- JaLC
- IRDB
- NDL
- CiNii Articles
- KAKEN
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- Abstract License Flag
- Disallowed