玉米不同局部灌溉技术的节水机理研究

Study on Water-Saving Mechanisms of Different Localized Irrigation Techniques in Maize

通过在玉米试验田采取一定的农艺手段,以畦漫灌为对照,对隔行交替灌溉、隔行交替喷灌、膜上灌溉和穴灌四种局部节水灌溉方式下的土壤水分变化、植株的生育动态、生理性状和产量进行了分析。试验结果表明:在前期土壤特性一定,局部灌溉水量为畦漫灌的70%情况下,几种局部灌溉节水技术中,膜上灌溉的节水性最好,依次为隔行交替灌溉、隔行交替喷灌和穴灌。膜上灌溉的产量比畦漫灌增加14.4%,隔行交替灌溉、隔行交替喷灌和畦漫灌接近,穴灌产量最低。

In this study,an experiment in maize was conducted to determinate the soil water,plant developing dynamic,physiological characteristics and yields in the different water conditions,including the septa-irrigation,septa-spurt-irrigation,film above irrigation and cave irrigation,and the flood irrigation as contrast.The results of the experiment show that definite condition of pre-status of soil moisture,Under the condition of 70% flood irrigation water,among the kinds of Localized Irrigation techniques,the fil...