1. State Key Laboratory Base of Eco-Hydraulic Engineering in Arid Area, Xi′an University of Technology, Xi′an, Shaanxi 710048, China; 2. Water Affairs Bureau of Guangde County, Anhui Province, Guangde, Anhui 242200, China.
Abstract：In order to find out effects of film-mulched ditch-on-ridge irrigation on soil moisture distribution and economic benefit, greenhouse tomato was used as experimental plant. Using a completely randomized experimental design method, the soil moisture distribution was observed by time domain reflectometry(TDR). The effect of irrigation methods, such as film-mulched ditch-on-ridge irrigation and conventional furrow irrigation, on the economic benefit of greenhouse tomato was investigated. The results show that the soil moisture profile in the back of ridge reaches the maximum later than that in the furrow irrigation, and the profile observation point at the back is 184 h after the irrigation. The water content is increased by 0.63% compared with the conventional furrow irrigation. For the film-mulched ditch-on-ridge irrigation, the maximum IWUE of greenhouse tomato reaches 34.925 kg/(hm2·mm-1)under water shortage irrigation, both yield and fruit yield are higher, the combined net income is the highest, and the economic benefit is maximum.
