The rice growth and yields under four different irrigation methods were studied. The results showed that different irrigation method had significantly different impact on the rice growth, physiological characteristics, the dry matter accumulation and the production. The shallow irrigation was the optional method for rice growth and yields compared with other irrigation methods, and the dry irrigation method was the worst. Compared with the dry irrigation method, plant height, the tiller number and photosynthetic rate under the shallow irrigation method all rose, and the seed setting added by 41.5%, 1000-grain weight increased by 1.6 g, and the output increased by 15.8 g/pot significantly. Compared with the deep water irrigation method, the yield and the irrigation efficiency of the shallow irrigation increased by 7.6 g/pot and 0.69 kg/m respectively. The yield of the intermittent irrigation was equal to that under the deep flooding irrigation, but the irrigation efficiency was 0.44 kg/m3 higher than that of the deep flooding irrigation. Therefore, according to the characteristics of the seasonal drought, the shallow irrigation method was conducive to the high yield of the late rice and the intermittent irrigation was helpful for the late rice culture in the south of Hunan province.%为建立湘南双季稻区节水灌溉栽培模式提供依据,设置了不同灌溉方式对水稻生长发育的影响试验.试验结果表明:不同灌溉方式在水稻生长、干物质积累、生理特性以及产最上都存在显著差异.4种灌溉方式下水稻生长与产最表现以浅水灌溉最优,受旱灌溉最差,与受旱灌溉比,浅水灌溉株高、分蘖数、光合速率均有提高,结实率提高了41.5％,千粒重增加了 1.6g,产量增加了15.8g/盆；浅水灌溉下水稻产量、灌溉用水利用率分别比深水灌溉高出7.6g/盆和0.69 kg/m3.间歇灌溉产最与深水灌溉差异很小,但间歇灌溉水分利用率高出深水灌溉0.44kg/m3.因此,在湘南双季稻区,针对季节性干旱的特点,采用浅水灌溉方式有利于晚稻高产稳产,间歇灌溉有利于晚稻种植.
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