润湿灌溉条件下生菜磷素营养研究

Study on Phosphorus Nutrient of Lettuce under Humid Irrigation Conditions

润湿灌溉是贵州大学农学院研发适宜石漠化山地区的高效集雨灌溉于一体的新技术,该技术具有阻止水分渗漏,防止土表水分蒸发、减少杂草生长等特点。为了解该技术施肥应用效果,在润湿灌溉和传统灌溉方式下,不同磷素供应水平对生菜鲜重、干重及其部分生理生化指标的影响。研究结果表明:润湿灌溉对生菜生长的前期具有促进作用。就施磷水平而言,传统灌溉方式下生菜在施磷水平为0.06g/kg条件下生长更旺盛,而润湿灌溉在施磷水平为0.02g/kg条件下对促进生菜生长具有显著效果,且优于传统灌溉方式。

Humid irrigation is a new technique created by College of Agriculture,Guizhou University,it has function of efficicently save water and irrigation by controlled release water and appropriate to appling in rocky desertification mountainous areas,which has characteristics of block water leakage,provent water evaporation at surface of soil,decrease growth of weeds and etc.In order to explore the application impact of humid irrigation,the humid irrigation and traditional irrigation under different P application levels and its effects on fresh weight,dry weight and partial physiological and biochemical indicators of lettuce was studied.The results showed that the humid irrigation has a promoting effect on the growth of lettuce.On the level of phosphorus,the growth of lettuce is stronger in phosphorus level of 0.06g/kg under traditional irrigation mode,but as for the humid irrigation,it has significant effect on promoting the growth of lettuce on phosphorus level under the condition of 0.02g/kg,also,it is better than the traditional irrigation method.