蚕豆耐氯临界值研究

Study on the Critical Value of Chlorine Tolerance of Broad Bean

在中性紫色土上 ,蚕豆耐氯临界值为 40 0～ 5 0 0mg/kg。 80 0mg/kg以上蚕豆生长受到明显抑制 ,16 0 0mg/kg时出现中毒症状 ,至 32 0 0mg/kg时蚕豆植株幼苗完全不能生长 ,最后变成褐色死亡。

The critical value of Cl tolerance of broad bean is 400 mg/kg to 500 mg/kg in the neutral purple soil.The suitable Cl concentration of the soil is 50 mg/kg to 400 mg/kg.Over 800 mg/kg,its grouth is restrained.The Cl toxicty symptom occurs when the Cl concentration at 1 600 mg/kg is added to the soil.Up to 3 200 mg/kg,broad bean cant grow,change colour into brown and die in the end.