乌鲁木齐再生水对小白菜、棉花生长的影响

The Impact of Agricultural Irrigation with Reclaimed Water on Growth of Chinese Cabbage and Cotton

【目的】研究乌鲁木齐市再生水用于农业灌溉的可行性。【方法】以小白菜和棉花为研究对象,分别用处理1清水对照、处理2浓度50%的再生水和处理3浓度100%的再生水浇灌,测量POD、CAT、SOD、MDA、小白菜干重和棉花产量。【结果】再生水处理时间越长,浓度越高,抑制作用越明显。处理1与处理2的小白菜干重差异显著,处理2>处理3>处理1。再生水中含有的营养物质促进了小白菜的生长,但其中的有害物质却对小白菜构成威胁,所以50%再生水处理的小白菜生长最好;三组处理下的棉花单产差异显著,处理1>处理2>处理3,可见再生水抑制棉花的生长。【结论】对于不同作物,再生水表现出的作用不同。再生水对小白菜生长主要表现促进作用,而对于棉花生长主要表现胁迫作用。

[ Objective ] Study the feasibility of secondary treated waste water for agricultural irrigation in Urumqi. [ Method] Chinese cabbage and cotton were used as experimental materials and treated respectively with treatment 1 which is control, treatment 2 which is 50% reclaimed water, and treatment 3 which is 100% reclaimed water. POD, CAT, SOD, MDA, and dry weight of Chinese cabbage and production of cotton were detected. [ Result] Results showed that inhibitory effects of reclaimed water were proportional to the treatment duration and concentration. The dry weight of 50% reclaimed water treated treatment I, as the order treatment 2 〉 treatment 1 〉 treatment 3. Because the nutrients and harmful substances respectively played promotion and inhibition on the growth of Chinese cabbage, treatment 2 growed better; The yields per acre of cotton under three kinds treatments were significant difference, as the order treatment 1 〉 treatment 2 〉 treatment 3, that means reclaimed water inhibits the growth of cotton. [ Conclusion ] Reclaimed water showed different effects on different crops. On cabbage, it mainly showed promotive effect, while on cotton, it mainly showed inhibition effect.