摘要
通过水培试验，探讨了铅对生长在含过量锰溶液中的水稻生长及某些营养指标的影响。结果表明：铅对水稻锰毒有明显的拮抗作用，它能促进受锰毒害的水稻长高和分蘖，并提高水稻的生物产量；铅能促进受锰毒害的水稻对铁的吸收，提高稻叶铁、叶绿素含量以及过氧化氢酶活性，降低过氧化物酶活性；铅也会抑制水稻对氮、磷、钾等营养元素的吸收，降低体内的含量。
Under solution culture condition,the effects of lead on growth and some nu trient index of rice plant which grew in high Mn concentration were studied.The preliminary results were summarized as follows:lead antagonized significantly the Mn toxicity to rice,it not only promoted the plant elongation and tiller,but also increased the plant biological yield;lead promoted Fe absorption of the rice,increased the contents of chlorophyll and Fe in rice leaves and the activity of plant catalase,but decreased the activity of plant peroxidase;on the other hand,lead also inhibited the rice absorption in N,P,K,therefore decreased their contents in the rice plant.
关键词
铅
水稻
锰毒
拮抗效应
lead
rice manganese toxicity
antagonism
