Effects of Different Fertilizations on Chrysanthemum Growth and Its Quality on Cd Polluted Soil

Pot experiment was carried out to study the effects of Na phosphorus, Ca phosphorus, organic fertilizer, Na phosphorus-organic fertilizer and Ca phosphorus-organic fertilizer on chrysanthemum′s growth and its quality on Cd polluted soil.The results showed that the improvement effects varied with the different fertilizer due to their different characters and mechanisms.Root activity was improved and Cd content in leaves decreased with the Na phosphorus treatment, but the chlorophyll content in leaves was decreased simultaneously and there was no significant effect on the activity of enzyme and protein content.Ca phosphorus treatment was superior to Na phosphorus treatment in indexes of protein content, root activity and chlorophyll content,but no significant difference was occurred between the two phosphorus treatment in other indexes.Organic fertilizer treatment increased chrysanthemum′s flower yield, which rose 80 percent compared to the CK.Chlorophyll content, protein content and root activity also got a rise with the Na phosphorus treatment.Combined application of Ca phosphorus with organic fertilizer was better than independent application of Ca phosphorus, except root activity index.Combined application of Na phosphorus with organic fertilizer was more effective than independent application of the organic fertilizer and Na phosphorus in all of indexes, which had best improvement effects among the treatments.