清、污水灌溉对冬小麦生长发育影响的田间试验研究

污水灌溉对作物生长和土壤环境的影响日益受到人们的关注。通过在北京东郊所进行的清、污水灌溉田间试验 ,着重探讨了污灌条件下 ,不同灌水水量和施肥量对冬小麦生长和产量的影响。试验设置了 2种灌水水质 (清水和污水 )、3种灌水水平 (高水、中水和低水 ) ,2种施肥水平 (中肥和无肥 ,限污水灌溉 ) ,共 9个处理 ,2组重复。结果表明 :污水灌溉对冬小麦茎叶的生长发育有一定的促进作用 ,并能提高产量 17.6 %～ 31.1% ;虽然灌溉污水能够提供一定的养分 ,但对冬小麦适量施用氮肥仍然很有必要。

Effects of Fresh Water and Sewage Irrigation on Growth of Winter Wheat

A field experiment was carried out to study the effects of irrigation water quantity and fertilizers on growth and yield of winter wheat in east suburb of Beijing. Two kinds of irrigation water (tap water and sewage), three levels of water quantity (high, middle and low) and two levels of fertilizer utilization (with and without fertilizer) were set in the field experiment. There are totally 9 treatments and 2 repeats. The experimental results indicated that sewage irrigation can promote growth of stem and leave of winter wheat to a certain extent and raise yield of 17.6% to 31.1%. Although sewage irrigation can provide some nutrients, it was necessary to add proper quantity of nitric fertilizer.