摘要
采用盆栽试验,研究施用石灰、有机肥、海泡石3种不同改良剂对水稻土培养的小油菜生物量、镉锌吸收量、吸收系数的影响。结果表明:施用改良剂,小油菜(Brassica campestris Linn)连种3季的生物产量都显著提高,对镉锌的吸收量降低,其中以石灰和有机肥配施的效果最好,增产170%以上;单施改良剂降低小油菜对镉锌的吸收以石灰的效果较好,海泡石的最差。小油菜对镉的吸收系数大于锌的吸收系数,说明镉在土壤中的移动性比锌大,施用石灰降低吸收系数的效果最好;施有石灰的使小油菜中镉、锌含量达到食品卫生标准;改良剂对镉的后效好于对锌的后效。
The effects of different amendments （lime, manure and sepiolite） on rape （Brassica campestris L.）biomass, the uptake Results showed that manure showed the of cadmium and zinc by rape, and uptake coefficient were studied using pot experiments. the yield of rape increased after amendments application. The treatment of lime and highest increasing yield by more than 170% compared with no amendments application. The amount of absorbed Cd and Zn in rape decreased after the three amendments application. Lime application showed the best effect to decrease the heavy mental content in rape roots when amendments were separated apphed. However, sepiolite could hardly decrease the content in rape after separated applied in contaminated soil. The uptake coefficient of Cd was bigger than soil to plants. The uptake in the rape met the the better than that to Zn. coefficient was decreased food standard requirement that of Zn. It meant that Cd was easily to move from after adding lime especially. The amount of Cd and Zn after adding lime. The effect of amendments to Cd was
出处
《热带作物学报》
CSCD
2010年第4期541-546,共6页
Chinese Journal of Tropical Crops
基金
福建省农科院青年创新基金(No.2008QB-13)
国家重点基础研究发展规划(973)项目(No.2002CB410809)
"十一五"国家科技支撑计划项目(No.2007BAD89B13)资助
关键词
改良剂
小油菜
水稻土
吸收系数
Amendment
Rape （Brassica campestris L.）
Paddy （Oryza sativa） soil
Uptake coefficient
