九州大学大学院農学研究院生産環境科学部門地域環境科学講座灌概利水学研究室
Laboratory of lrrigation and Water Utilization, Division of Regional Envirohment Science, Department of Bioproduction Environmental Scierice, Graduate School of Bioresource and Bioenvironmental Sciences, Kyushu University
九州大学大学院農学研究院生産環境科学部門生産環境情報学講座生産環境情報学研究室
Laboratory of Bioproduction and Environment lnformation Sciences, Division of Bioproduction and Environment lnformation Sciences, Department of Bioproduction Environmental Science, Faculty of Agriculture, Kyushu University
九州大学大学院農学研究院生産環境科学部門地域環境科学講座灌概利水学研究室
Laboratory of lrrigation and Water Utilization, Division of Regional Envirohment Science, Department of Bioproduction Environmental Scierice, Graduate School of Bioresource and Bioenvironmental Sciences, Kyushu University
九州大学大学院農学研究院生産環境科学部門地域環境科学講座灌概利水学研究室
Laboratory of lrrigation and Water Utilization, Division of Regional Envirohment Science, Department of Bioproduction Environmental Scierice, Graduate School of Bioresource and Bioenvironmental Sciences, Kyushu University
九州大学大学院農学研究院生産環境科学部門地域環境科学講座灌概利水学研究室
Laboratory of lrrigation and Water Utilization, Division of Regional Envirohment Science, Department of Bioproduction Environmental Scierice, Graduate School of Bioresource and Bioenvironmental Sciences, Kyushu University
九州大学大学院農学研究院生産環境科学部門地域環境科学講座灌概利水学研究室
Laboratory of lrrigation and Water Utilization, Division of Regional Envirohment Science, Department of Bioproduction Environmental Scierice, Graduate School of Bioresource and Bioenvironmental Sciences, Kyushu University
In the greenhouse, experimental study was conducted to clarify the properties on the salitish water movement in the newly reclaimed field under the applications of the intermittent and the frequent irrigation methods. In the intermittent irrigation, salt concentration decreases after irrigation and increases before irrigation. These fluctuations will sometimes cause severe damage to the crop growth. ln the small quantity frequent irrigation, the rise of salitish water to the root zone was suppressed by the irrigation application. Though the small quantity frequent irrigation caused the downward flux at the whole soil layers, in the intermittent irrigation it is considered that the irrigated water goes through the same ways and the cracks. So the desalinization will occur at a part of soil layers in the intermittent irrigation. The suitability of the intermittent irrigation for controlling salitish water movement was clarified with t.he simulation study. The method is effective for suppressing the upward water flux, but this type of irrigation scheduling needs much more water than intermittent irrigation scheduling. For determining the appropriate amount of water, a soil paoisture monitoring system would be required.
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