中水灌溉对不同绿地植物生长胁迫效应的研究

Growth Stress Effects of Different Greenbelt Plants under Reclaimed Water Irrigation

通过对深圳市常见9种绿地植物在中水灌溉下生理指标的测定,结果表明,在中水与清水灌溉下,叶片相对含水量、叶绿素含量、相对电导率、抗氧化物酶活性的季节动态呈波动性变化,中水和清水灌溉下差异不显著(P>0.05);中水和清水灌溉下大多数植物各指标在9月前表现为上升,9月后逐渐下降,表现出一定的差异,但差异不显著(P>0.05)。因此,利用中水灌溉绿地植物不会产生胁迫危害。

The physiological indexes of 9 kinds of greenland plants irrigated by reclaimed water in Shenzhen city were determined, and the results showed that under clean-water and reclaimed water ir- rigation, leaf indexes, including the relative water content, chlorophyll content, relative electric con- ductivity, antioxidant enzyme activity, were changed seasonally, but the difference was not significant （P〉0.05） ; each index of most plants had a rising trend before September, and a decline trend after September, some difference appeared between reclaimed water and clear water irrigation, but this difference was not significant （P〉0.05）. Therefore, green plants irrigated with reclaimed water will grow without stress concern.