果园土壤污染生物修复研究

Study on the Bioremediation of Soil Pollution in Orchard

[目的]弄清土壤污染的生物修复作用机理。[方法]通过果园田间试验和土壤模拟试验,研究施用果树生物有机肥对果园土壤生物修复的作用。[结果]生物有机肥提高了根域土壤多酚氧化酶、脲酶、磷酸酶等酶的活力;促进了根域土壤对Pb2+等重金属的钝化;增加了有益真菌、放线菌、细菌等活性菌的数量,降低了根腐病菌、疫腐病菌、白/紫纹羽病菌和线虫等有害生物的数量。[结论]该研究为生物有机肥在果树上的推广应用提供了依据。

[ Objective ] The aim was to study the bioremediation mechanism of soil pollution. [ Method ] The effects of applying biological organic fertilizers on the bioremediation of soil pollution in orchard were studied by orchard field experiment and soil simulation experiment. [ Resuh ] The biological organic fertilizers improved the activities of enzymes （like polyphenol oxidase, urease, phosphatase etc） in root-zone soil, promoted the passivation of heavy metals （ Pb2 ＋ ） by root-zone soil, increased the quantity of active bacterium （ like beneficial fungi, acfinomycetes, bacterium etc） and decreased the quantity of harmful biology （ like Fusarium oxysporum, Moniliophthora roreri, Ruselliniu necutrix/Helicobasidium mompa Tanakae, nematode etc）. [ Conclusion ] The study results provide some references for the popularization and application of biological organic fertilizers on fruit trees.