节水高产控制灌溉技术

控制灌溉具有明显的节水、高产效果。水稻控制灌溉可节水50％，增产10％；大面积推广运用可节水3000m3／hm2，增产750ks／hm2。小麦控制灌溉可节水65％，增产20％；大面积运用可节水2500m3／hm2，增产1000kg／hm2。水稻控制灌溉灌溉水的生产效率为2．85kg／m3；小麦为7kg／m3。该技术投资少，方法简单，易操作。分析了水稻、冬小麦控制灌溉的作物需水量的试验数据，提出了其技术规范。

A Controllable Irrigation Technology of Water-Saving and High-Yield

The controllable irrigation technology has obvious effects of water-saving and high-yield. The controllable irrigation of rice can save 50% of water and increase 10% of yield. If can save 3000 m3/hm2 of water and increase 750 kg/hm2 of rice yield for large area spreading application. The controllable irrigation of wheat can save 65% water and increase 20% of yield. It can save 2500 m3/hm2 of water and increase 1000 kg/hm2 of wheat yield for large area spreading application. The productive efficiency of irrigation water for rice and wheat are 3. 83 kg/m3 and 7.00 kg/m3 respectively. This technology has the advantages of less investment, simple method and easy operation. The experimental data of evapotranspiration of rice and wheat have been analysed and the technical specification is presented.