Liu X., Han Z., Hao K., Wang X., Yang Q., 2015, Water Consumption Characteristics of Sugarcane in Dry-Hot Region under Climate Change, Chemical Engineering Transactions, 46, 1411-1416.
The analysis of the sugarcane water requirement regulation at different temporal scale can provide a basis for optimal water management. Based on the daily meteorological observation data in Yuanmou dry-hot region during 1956-2010, sugarcane water requirement and crop water surplus deficit index were estimated, and the variation characteristics were analyzed at different temporal scale. The impact of several meteorological factors on water requirement was studied by the partial correlation analysis method. The variation pattern was conducted on the data of the annual water requirement and crop water surplus deficit index by using the Mann-Kendall test. The result showed that sugarcane water requirement in dry-hot region was significantly higher than other months from June to October and less in April, May, November and December. The moisture profit and loss was comparatively large from June to December and sugarcane depended much on irrigation, but it was less in April and May and sugarcane depended less on irrigation. Sugarcane water requirement fluctuated decreasing trend in recent 55 years. Since the 1980s, water requirement and water deficit began to decrease significantly. The changes of sugarcane water requirement were primarily attributed to wind speed and sunshine hours in dry-hot region.
