水稻“节水灌溉”模式探索

Exploration of Water-Saving Irrigation Model in Rice

根据水稻不同生育时期采取不同的灌溉方法,即:插秧至返青阶段有水不淹心;返青至分蘖高峰期寸水不露泥;拔节孕穗至蜡熟末期间歇灌溉,缺水补水。结果表明:采用节水灌溉模式稻田可节水1800m3/hm2,可增产625.5kg/hm2,纯增收1431元/hm2。

The different irrigating methods were applied according to different growth stage of rice, that is, keeping shallow water level under the youngest leaf from transplanting to green return, keeping water level three centimeter above ground from green return to tillering peak, and intermittent irrigation from booting to late waxy maturity. The result showed that water-saving irrigation model in paddy field can save water by 1 800 m^3 per hectare, increase yield by 625.5 kg per hectare, and enhance net income by 1 431 yuan RMB per hectare.