水田灌漑 (第6報)
灌漑方法と稲の生育収量
1954 年 10 巻 1-2 号 p. 11-15
詳細
1954 年 10 巻 1-2 号 p. 11-15
In the plains of south-western Japan, the artificial regulation to lower the water-and soil-temperatures in the rice-field is more favorable for the crop growth than the customary management of irrigation (irrig. with stagnant water).
One of the methods to lower the field-temperatures is the irrigation with running water.
Several experiments as for the above mentioned phenomena were performed during from 1947 to 1952. and the results obtained are shown in Tables 2-7.
There is no need to irrigate with running water during the whole irrigating term. The temp.-regulation taken only in summer season exerts fairly good effects on the crop.
