ハウス栽培における雨水利用の貯留施設規模について

概要

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This paper aims at investigating the relationships among the irrigation area, house roof as catchment area and tank volume for the purpose of irrigating the house crops by using the harvested rainwater from house roof. These relationships are derived by water balance simulation of daily ET of Lettuce plants and rainfall in Naha, Okinawa. At first, the tank volumes are determined for lOa catchment area when 20000, 25000, 30000 plants are planted in lOa. Similarly, the tank volumes for the catchment area of 20a and 30a are determined when 20000, 25000, 30000 Lettuce plants are planted in 1 Oa. The required tank volumes for irrigating 20000, 25000, 30000 Lettuce plants established in lOa are 37, 47 and 58m^3, respectively, for the catchment area of lOa. When the catchment area is increased up to 20a, the required tank volume is simulated as 32, 40 and 50m^3 in order to irrigate 20000, 25000 and 30000 Lettuce plants per lOa, respectively. Even, with the increase of catchment area over 20a, the volume is the same as that of the catchment area of 20a.
日本雨水資源化システム学会の論文