水土保持学报2011，Vol.25Issue(6)：181-185,5.
赤泥施用量对Cd污染稻田水稻产量和土壤生物性状的影响
Effect of Application on Different Amount of Red Mud on Rice Yield and Soil Biological Properties in Cd-contaminated Paddy Soil
摘要
Abstract
A pot experiment was conducted to study the effect of application of different amount of red mud on rice yield and the soil biological properties in Cd-polluted paddy soil, with no red mud application as the control (RM-0). The results indicated that appropriate application of red mud could apparently promote rice growth and increase effective panicles and rice yield. With no red mud application as the control (RM-0), plant height, effective panicles, seed setting rate and rice yield in RM-2 treatment (0. 5% red mud) were increased by 3. 40% , 4. 20% , 3. 87% and 6. 86% , respectively. Soil microbial biomass carbon (SMBC) and nitrogen (SMBN) in the treatments with the red mud application were significantly higher than that in the RM-0 treatment from tillering to mature stages of the rice. The Cmic and Nmic of RM-2 treatment were higher than that of RM-0 treatment in all stages of the growth period of the rice (P<0. 01). The amount of soil bacteria, fungi and actinomyces in treatments with red mud application were higher than that in RM-O treatment. The amount of soil bacteria, fungi and actinomyces in RM-2 treatment were higher than those of the treatments. The activity of soil urease, acid phosphatase and catalase in RM-2 treatment was highest among the treatments, and was increased by 10. 5%, 32. 4% and 15. 9% compared with RM-0 treatment, respectively (P< 0. 05). The pH and CEC in the treatments with red mud application were obviously increased compared with that in RM-O treatment. The soil organic matter did not change obviously among all of the treatments. Thus, it could be concluded that 0. 5%(W/W) of red mud application performed best in improving soil biological properties and soil fertility and increasing rice yield in Cd-contaminated paddy soil.关键词
赤泥/Cd污染稻田/土壤微生物量/土壤微生物/土壤酶活性/土壤肥力Key words
red mud/ paddy soil polluted by Cd/ soil microbial biomass/ soil microorganism/ soil enzymatic activity/ soil fertility分类
农业科技引用本文复制引用
范美蓉,罗琳,廖育林,田杰,胡波..赤泥施用量对Cd污染稻田水稻产量和土壤生物性状的影响[J].水土保持学报,2011,25(6):181-185,5.基金项目
国家自然科学基金项目(50874046) （50874046）
湖南教育厅科技项目(08A032) （08A032）
