甘蔗耐镉性初探

以盆栽试验初步研究甘蔗抗镉(Cd)污染性能。结果表明:当土壤Cd含量不超过0.53mg/kg时,对甘蔗产量影响不大;随着土壤Cd含量的提高,甘蔗受害程度加重,影响了糖分的合成及产量的构成,使甘蔗产量急剧下降,蔗糖分降低。甘蔗各部分对Cd的富集能力不同,根系的Cd含量最高,蔗汁中Cd含量最低,因此甘蔗适于在轻度Cd污染的农田种植。

Preliminary report of resistance of sugarcane towards Cadmium

Within a pot experiment the tolerance of sugarcane towards cadmium was examined. It showed that: there was little negative effluence to sugar yield when the cadmium content in soil was no higher than 0.53 mg/kg, and there was not any unfavorable effects to the sugar in cane when the cadmium content was less than 5.08 mg/kg. The level of Cd in different parts of plant was different. The content in root was the highest and in juice of sugarcane was the lowest. There was hardly any Cd coming into food chain through sugarcane. Therefore, sugarcane is suitable to plant in weakly polluted agricultural land.