Effects of Modifiers on Soil Enzyme Activity at Different Growth Stages of Rice Plants under Zinc and Chromium Stresses
To study the effects of modifiers on heavy metal accumulation of rice plants under zinc and chromium stresses, pot experiments were used to study the effects of modifiers (lime, superphosphate, wheat straw, rape straw and rabbits feces) on soil enzyme activity at different growth stages of rice plants. The results showed as follows: The improvement of soil enzyme activities by different modifiers were high concentration>low concentration>CK at different growth stages of rice plants. The best modifier on soil catalase activity was high concentration rabbits feces which were 30.25%, 31.1% and 26.8% higher than CK at different growth stages of rice plants. At the same time, the best modifier on the soil urease activity was high concentration rabbits feces which was 48.98%, 38.28% and 31.53% higher than CK. The best modifiers on soil amylase activity was high concentration of rabbits feces (tillering stage of rice plants) and wheat straw (booting and filling stages of rice plants), which were 51.43%, 50% and 58.33% higher than CK.
Haibin Yang Qingsong Zhang Lijin Lin Weiding Yuan Xuemei Zhu Jirong Shao
College of Resource and Environment Sichuan Agricultural University Yaan, Sichuan, P.R.China Yaan Soil and Water Conservation Monitoring Substation Yaan, Sichuan, P.R.China College of Life Science Sichuan Agricultural University Yaan, Sichuan, P.R.China
国际会议
成都
英文
1-4
2010-06-18（万方平台首次上网日期，不代表论文的发表时间）