冬小麦、春玉米间作条件下作物需水规律

通过田间试验研究了冬小麦、春玉米间作条件下各生育期的作物需水规律.结果表明:与单作相比,第1个试验期内冬小麦全生育期内间作麦田土壤蒸发量增加34.63 mm,作物蒸腾量减小65.81 mm, 蒸发蒸腾量减小31.18 mm.第2个试验期内冬小麦生育期内间作麦田土壤蒸发量增加26.00 mm,作物蒸腾量减小64.81 mm, 蒸发蒸腾量减小40.81 mm.与单作春玉米相比,间作春玉米的土壤蒸发减少了40.94 mm,作物蒸腾增加了147.73 mm,ET值增加了106.79 mm.可为间作种植的水分管理提供参考.

Study on Crop Water Requirement Rules under Winter Wheat-Spring Maize Intercropping System

The crop water requirement rules during various growth periods under winter wheat-spring maize intercropping system were studied through the field experiments. The results showed that compared with the sole cropping wheat, the evaporation of intercropping wheat increased 34.63 mm, transpiration decreased 65. 81mm, and evapotranspiration decreased 31.18 mm during the whole growth period of winter wheat in the first experiment period. While in the second experiment period, the evaporation of intercropping wheat increased 26.00 mm, transpiration decreased 64. 81 mm, and evapotranspiration decreased 40. 81 mm. Moreover, compared with the sole cropping maize, the evaporation of intercropping maize decreased 40. 94mm, transpiration increased 147.73 mm, and evapotranspiration increased 106. 79 mm. The study result provided important reference for the water management of the intercropping systems.