Effects of controlled alternative furrow irrigation on physical properties and water use efficiency of summer maize

A study was made from June to September 2008 on the physical properties and water use efficiency of summer maize under treatments of different furrow irrigation and processing of water(80%,70% and 60% of field water holding) on each application and frequency in Xinxiang of Henan Province.The experimental results show that controlled alternative furrow irrigation can effectively inhibit the growth of maize redundancy,so it is conducive to make photosynthetic production to the direction of yield formation;the irrigation amount is decreased by 33.3%,water consumption decreased by 22.04%,21.05% and 23.88%,while the yield decreased by 2.85%,3.99% and 9%;WUEI of conventional furrow irrigation and alternate furrow irrigation are the highest in treatment 70%,1.74 and 2.50 kg/m3 in each irrigation;WUEET shows that 70% treatment for CFI is the highest(1.63 kg/m3),80% treatment for AFI is the highest(2.05 kg/m3);in the same moisture treatment,AFI's water use efficiency is far greater than CFI,so it is a suitable water supply model for maize.