蚓粪配比对墨西哥玉米生长及重金属积累特性的影响

采用盆栽法,研究了蚓粪配比对墨西哥玉米生长及Cu、Zn吸收积累特性的影响,结果表明,墨西哥玉米的茎叶及根系生长分别在蚓粪体积配比为50%和75%时相对最优;蚓粪体积配比为50%或75%时有利于墨西哥玉米茎叶Cu含量的提高,而对茎叶Zn含量无明显影响,但其根系Cu、Zn含量均随蚓粪比例提高而上升;当蚓粪体积配比为50%时,墨西哥玉米茎叶对Cu、Zn的积累量均较高,而当蚓粪体积配比为75%时则更利于墨西哥玉米根系对Cu、Zn的积累.因此,50%蚓粪体积配比相对利于墨西哥玉米修复蚓粪中的Cu、Zn复合污染.

The Effects of Vermicompost Proportion to the Growth and Heavy Metal Accumulation of Euchlaena Mexicana Schrad

The paper researched on the effects of vermicompost proportion to the growth as well as Cu,Zn Absorption and accumulation characteristics of Euchlaena Mexicana Schrad with pot experiment.The results show that the stems and leaves as well as roots develop optimally in the vermicompost with proportion respectively 50% and 75%.The vermicompost with proportion 50% or 75% is beneficial to the copper content of the stems and leaves of Euchlaena Mexicana Schrad,but has little influence on the zinc content,the copper and zinc content of roots increase along with the raise of vermicompost proportion.The copper and zinc accumulation of the stems and leaves are both high when the proportion is 50%,however,it is better for roots to accumulate the copper and zinc when the proportion is 75%.Therefore,the vermicompost proportion 50% is relatively conducive for Euchlaena Mexicana Schrad to repair the combined Cu,Zn pollution existed in vermicompost.