内蒙古扎赉特旗水稻节水灌溉试验研究

Study on The Water Saving Irrigation of Rice in Jalaid County of Inner Mongolia

为了探索内蒙古东北寒地水稻节水控制灌溉技术适宜性,开展了田间试验,研究当地水稻常规淹灌、"浅晒浅湿"和"浅晒湿干"3种灌溉方式对水稻生理指标以及产量构成因子的影响。试验结果表明:"浅晒浅湿"和"浅晒湿干"2种节水控制灌溉技术均可促进水稻分蘖,增加水稻茎秆单壁厚度;2种节水控制灌溉技术水稻的穗数、产量均比常规灌溉高,单位面积穗数分别提高了16.9穗和23.3穗;产量比对照分别高出3.7%和5.9%。2种节水控制灌溉技术具有一定的节水增产效益,为推广寒地水稻节水控制灌溉技术提供了一定的理论支撑。

In order to explore the suitability of water-saving control irrigation technology for rice in the northeast cold region of Inner Mongolia,field experiments were carried out to study the effects of three irrigation methods,including conventional flood irrigation,shallow sunlight and shallow humidity,and shallow sunlight and moisture drying,on physiological indexes and yield components of rice.The results showed that two water-saving control irrigation technologies,'light sunlight and light humidity'and'light sunlight and light humidity and dry',could promote rice tillering and increase the thickness of single wall of rice stalk.The number of panicles and yield of rice under the two water-saving control irrigation technologies were both higher than that under conventional irrigation,and the number of panicles per unit area was increased by 16.9 ears and 23.3 ears,respectively.The yield was 3.7%and 5.9%higher than the control.The two water-saving control irrigation technologies have certain water-saving and production-increasing benefits,which provide certain theoretical support for popularizing the water-saving control irrigation technology of rice in cold region.