Abstract:

Under the condition of mobile rain-proof shelter, controlling six treatments and three levels processing in the critical period of spring corn, a field experiment was conducted to study the effect of irrigation at different growth stages on south spring maize growth, soil moisture, yield and water use efficiency. The results showed that: the jointing stage of light drought had the most important influence on spring maize growth and leaf area, filling stage of light drought had the most important influence on corn yield, high water treatment was maximum consumption, low water treatment was minimum consumption. Water consumption was 464.6 mm, the maximum yield was 6795 kg/hm2, water use efficiency was the highest at jointing stage of light drought treatment. In conclusion, in order to achieve the purpose of water-saving and high yield, the soil moisture was controlled at the 60% of field capacity, which was recommended for spring maize in south.