| Budget Amount *help |
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2016: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2015: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2014: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
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| Outline of Final Research Achievements |
The aim of this study is to predict the risk of salinity stress at crop fields in coastal agricultural fields and to suggest the water management methods for the stress reduction and enhancement of agricultural productivity. Current and solute analysis in canal network was performed in Isahaya Central Polder, Nagasaki Prefecture. A numerical model was introduced using SWAP (Soil Water Atmosphere Plant) model to predict the soil water and solute movements under various cultivation in a reclaimed field. The model accuracy were verified by result of measurement soil moisture condition at a agricultural field located in Isahaya Central Polder. Stresses due to wetness, drought and salinity were quantified using difference between potential transpiration rate and actual transpiration rate. The water and salinity stress were predicted under the scenario for drought year and groundwater salination and water management methods for reduction of the stresses could be devised.
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