The Effects Of Parsley Growth And Absorbing Cd In Aerobic Drip Irrigation

To find out the effect of different aerobic drip irrigation methods on growth characteristics of parsley and the effect of different aerobic drip irrigation methods on growth their enrichment and transfer characters of parsley in Cd-polluted soils, parsley was used as test materials and a pot experiment was carried out. Based on three different drip irrigation methods, namely, mechanical aerobic drip irrigation, chemical aerobic drip irrigation and drip irrigation.The results showed that, compared with the drip irrigation, chemical aerobic drip irrigation and mechanical aerobic drip irrigation make parsley edible part fresh weight increase 39.85% and 15.63% on average. The leaf chlorophyll content index (CCI), plant height and rhizomes leaf weight of parsley in different growth stages were increased and improved by chemical aerobic drip irrigation.In Cd-polluted soils, the results showed that, compared with the drip irrigation, chemical aerobic drip irrigation make parsley root dry weight and stem dry weight decrease sharply on average. In the whole growth period of parsley, under the influence of mechanical aerobic irrigation and chemical aerobic irrigation, the leaf chlorophyll content index(CCI) value was higher than drip irrigation; Cd content of root> stem> leaf in each tissue of parsley. Compared with other two kinds of irrigation methods, the difference of mechanical aeration drip irrigation on Cd content in tissues of parsley is more obvious.The effect of different aerobic drip irrigation methods on Cd in the soil with parsley shows that, with parsley growth, the content of Cd in soil decreased gradually, but different aerobic drip irrigation methods have no significant difference.As for Cd bio-concentration factor of parsley root, stem and leaf, there are significant differences under the influence of mechanical aerobic irrigation comparing drip irrigation. At the same time, As for Cd bio-translocation factor of parsley stems and leaves, the influence of mechanical aerobic drip irrigation exist significant differences than drip irrigation.