玉米丰产节水灌溉技术研究

Maize Yield of Water-saving Irrigation Technology Research

中国水资源贫乏,尤其是吉林省西部半干旱区,水资源更少。为了合理利用水资源,实施丰产节水灌溉技术,提高玉米产量,增加经济效应,试验玉米在盆栽试验条件下,采用回归旋转正交组合设计,建立了各生育期土壤水分与产量关系的数学模型。试验结果表明:各生育期土壤水分影响玉米产量大小的顺序是灌浆期>孕穗期>拔节期>开花期>苗期,指出灌浆、孕穗期是影响玉米产量的关键期,其田间持水量分别不能低于49%、52%。通过计算机优选出高产玉米各生育期土壤水分条件的组合。

Chinese water-poor, especially in the western Jilin Province, semi-arid regions, water less, in order to make rational use of water resources, the implementation of high-yield water-saving irrigation technology, enhance corn production, increase economic ef- fects. In this experiment maize plants at the test conditions under the orthogonal regression rotary combination design, set up of the growth period the relationship between soil moisture and yield of the mathematical model. The experimental results show that： the growth period of soil moisture affect the size of the order of production of maize grain-filling stage are〉 booting stage〉 jointing stage〉 flowering〉 seedling stage, pointing out that grouting, at booting stage is the impact of corn production in the critical period, should not lower its field capacity in 49%, 52%. Computer optimized high-yielding maize growing period of the combination of soil moisture conditions.