再生水灌溉对植物叶绿素含量的影响

Effects of Reclaimed Water Irrigation on Chlorophyll Content of Plant

[目的]为了研究再生水灌溉对植物叶绿素含量的影响。[方法]于2003～2005年进行盆栽和小区试验,测定不同水质灌溉下3种植物的叶绿素含量。[结果]同一年度内两种试验方法无显著性差异;3种水质灌溉的植物叶绿素含量均增高,顺序为:二级水>中水>自来水,中水、二级水处理无明显差异,相同的处理3种植物叶绿素增长率不同。在相同的试验方式下不同年度间的同一种草的叶绿素含量有随年度先增长后降低的变化趋势;不同年度间同一种草的不相同处理,呈逐年增长的趋势,无显著性差异。[结论]再生水灌溉能提高植物叶绿素的含量。

[Objective] The aim of the research was to study the effects of reclaimed water irrigation on chlorophyll content of plant. [Meth.od] The chlorophyll contents in 3 kinds of plant under the irrigation with different water quality were determined in pot test and plot experiments in 2003- 2005. [Result] Two test methods in the same year had no obvious difference. The chlorophyll contents of plant under the irrigation with 3 kinds of water qualities were all increased and the order was secondary water〉middle water〉tap water. There was no obvious difference between middle water treatment and secondary water treatment, and increasing rate of chlorophyll in 3 kinds of plants under the same irrigation treatment were different. The chlorophyll content of the same kind of grass among different years in the uniform test method had a change trend of first increasing and then decreasing, and that of different treatments of the same kind of grass among different years showed a trend of increasing annually and had no significant difference. [Conclusion] Reclaimed water irrigation could increase the chlorophyll content of plant.