The effects of irrigation schedule on growing trends, physiological index and yield effect of Indigowoad Root were studied in Yimin Irrigation District of Gansu Province during March to October in 2006. Six kinds of irrigation schedule treatments were designed for Indigowoad Root in the field. Experiment shows:
1. Evapotranspiration of Indigowoad Root in the whole growing period shows that the earlier period is slightly, the intermediate stage is big, and the later period is small. In th...