Argument basis for researching relationship between the actual rainfall and the effective rainfall in areas belong to Quang Nam irrigational system.

Abstract

    Research of the relationship between the effective rainfall and the actual rainfall basing on field-surface water management regime and rainfall regime of the plains in Quang Nam province to determine the effective rainfall with calculating irrigation regime for plant in order to achieve the necessary precision.Research results:

1. Scientific basis of the relationship between the effective rainfall and the actual rainfall

2. The plain of Quang Nam province is devided into two study-areas to identify the effective

rainfall: the northern plains and the southern plains of Quang Nam.

3. Calculated results for the effective rainfall in winter-spring rice crop and summer-autumn rice crop of these two areas studied by the time in a day.