西北干旱区膜上灌对玉米作物的高效节水机理研究

为探讨膜上灌对玉米水分利用效率的影响,在甘肃省景泰灌区进行田间对比试验。通过田间试验对比玉米膜上灌与传统畦灌玉米的叶面积指数、株高、叶面积、干物质积累等相关指标;进一步分析膜上灌增产与地温、灌水等相关指标的响应机制,为开展与膜上灌与其他农艺节水措施相结合灌水方法提供技术支撑。

In order to explore the effect of plastic film irrigation on water use efficiency of corn,a field comparative experiment was conducted in Jingtai Irrigation District of Gansu Province.Through the field experiment,the leaf area index,plant height,leaf area and dry matter accumulation of corn under plastic film irrigation and traditional border irrigation were compared,and the response mechanism of yield increase and soil temperature,irrigation and other related indexes was further analyzed,so as to provide technical support for irrigation combined with plastic film irrigation and other agronomic water-saving measures.