再生水在不同灌溉方式下对玉米生长的影响

采用北京市高碑店污水处理厂生产的二级水、三级水,以纯灌、混灌、轮灌等方式灌溉盆栽玉米,设置7种处理研究对玉米生长的影响。结果表明:不同水质的再生水在不同灌溉方式下对玉米生殖生长阶段的株高、叶面积、干重、产量和水分利用效率影响差异不显著,影响主要体现在营养生长阶段。苗期再生水轮灌比混灌和纯灌较好,二级水相对于清水和三级水对玉米苗期的干重有一定影响。同一水质在纯灌、混灌和轮灌不同方式下对玉米生殖生长和产量影响很小。

Reclaimed Water's Influence on Corn Growth under Different Irrigation Mode

Water shortage has been indicated as a problem for many north China area.Irrigation farmland with reclaimed water will be an important measure to buffer the serious situation.In this paper potted experiment is employed to study the influence on corn's growth irrigated with reclaimed water of different quality(second and tertiary effluent water of Beijing Gaobeidian wastewater treatment plant) and different irrigation mode(irrigated with reclaimed water entirely、mixed(1∶1) and rotated(1∶1) with fresh water).The results show that: reclaimed water of different quality under different irrigation mode haven't significant difference on corn's plant height、leaf area、dry matter weight、yield and water use efficiency in the stage of procreation growth.Influence is mainly embodied in nourishment growth stage.In the seedling stage reclaimed when rotated with freshwater will be better than the other two kinds of irrigation mode and also the second effluent has a certain influence on dry matter weight compared with fresh water and tertiary effluent.There are little influence on corn procreation growth and yield of the same reclaimed water on different irrigation manner.