期刊论文

中文

湖南农业大学学报(自然科学版)

1007-1032

2000

26

3

205-207

10.3321/j.issn:1007-1032.2000.03.013

本校为第一机构

当水中铅质量浓度≥1 000mg/L,或镉质量浓度≥20mg/L时,严重影响棉花、水稻种子萌发,芽长受到抑制。镉质量浓度为10mg/L时,对棉花、水稻种子萌发的影响则较小。当土壤中铅质量浓度≥1 000mg/kg,或镉质量浓度≥20mg/kg时,严重抑制棉花、水稻幼苗生长发育,植株矮小且呈现严重受害症状。在相同处理条件下,转Bt基因棉抗铅、镉污染能力较普通棉花强。铅、镉2种重金属元素在棉花、水稻鲜叶中的含量随浓度的增加而增加。在同一处理水平上,棉花的铅、镉吸收量比水稻的吸收量要大。

The effects of cadmium and lead in soil on rice and cotton were studied by using pot culture method.The results indicated:The two heavy metals had negative effects on the growth of rice and cotton.Under the treated concentration of Cadmium at ≥20 mg/L or Lead at ≥1 000 mg/L,the growth of rice or cotton seedlings was inhibited,but the germing percentage was not influenced. Under the concentration of Cadmium at ≥20 mg/kg or of Lead at ≥1 000 mg/kg,the growth of rice and cotton was inhibited seriously. Under the same condition the ability of t...