Effects of Straw Ash and Sewage Sludge on the Quality of Pakchoi in Cadmium Contaminated Soil

To investigate the effects of straw ash and sewage sludge on the quality and production of pakchoi grown in cadmium contaminated soil, the present experiment was designed to study the change of quality, production and Cd content of pakchoi for applying different amounts of straw ash and sewage sludge. The results showed that with increase of manure amount, pakchoi production, height, leaf area and leaf number significantly increase, The Vc and soluble sugar content is a significant trend of rise; On the Cd2Cd4 pakchoi with contrast chlorophyll maximum increased 1.5 -1.4 times, Vc increased 1.4-1.3 times, soluble sugar maximum increased 1.7-1.8 times; The pakchoi' over ground and roots Cd content was significantly lower in the Cd2Cd4 decreased 70.8%-65.6%, 54.5%-48.3%; The best recommended amount of manure is 40 g.kg(-1) for pakchoi in cadmium contaminated soil.