水解蛋白对镉污染土壤中小白菜的生长与生理影响  

Effect of hydrolyzed proteins on the growth and physiology of Brassica campestris L.in cadmium polluted soil

作　　者：刘紫薇 熊莎莎 刘奥运 黄凯 李亚东[1] 杨升[1] LIU Ziwei;XIONG Shasha;LIU Aoyun;HUANG Kai;LI Yadong;YANG Sheng(School of Life Sciences,Hubei University,Wuhan 430062,China)

机构地区：[1]湖北大学生命科学学院,湖北武汉430062

出　　处：《湖北大学学报（自然科学版）》2023年第4期533-537,共5页Journal of Hubei University：Natural Science

基　　金：多功能肽肥及其直肥化改良酸化土壤的成套技术研发与500亩示范项目(2020ZYYD031);湖北省大学生创业实践项目(S202010512089)资助。

摘　　要：为探究水解蛋白作为肥料对镉污染土壤中小白菜的生长与生理影响,以总镉含量分别为0.5 mg·kg^(-1)、1 mg·kg^(-1)的土壤为种植土壤,以小白菜为实验研究对象,常规复混肥为对照,探究水解蛋白对小白菜生长、镉含量以及土壤有效态镉含量的影响.结果表明:相比复混肥,水解蛋白能促进小白菜生长,株高分别增加5.4%(0.5 mg·kg^(-1))、15.8%(1 mg·kg^(-1)),单株鲜重分别增加15.3%(0.5 mg·kg^(-1))、19.6%(1 mg·kg^(-1));小白菜植株镉含量分别降低了12.2%(0.5 mg·kg^(-1)),26.9%(0.5 mg·kg^(-1));土壤有效态镉含量分别降低了31.4%(0.5 mg·kg^(-1))、21.4%(1 mg·kg^(-1)),项目的研究为中轻度镉污染土壤种植蔬菜合格达标建立技术参考.The study compared the effects of hydrolyzed proteins and conventional compound fertilizer on the growth and physiology of Brassica campestris L.in soil containing different concentrations of cadmium(0.5 mg·kg^(-1) and 1 mg·kg^(-1)).These effects included those associated with the biomass and cadmium contents of Brassica campestris L.and the available cadmium of soil.The results revealed that compared with the conventional compound fertilizer in different cadmium contents soil,the utilization of hydrolyzed proteins could increase the plant height 5.4%(0.5 mg·kg^(-1))and 15.8%(1 mg·kg^(-1)),and the fresh weight per plant 15.3%(0.5 mg·kg^(-1))and 19.6%(1 mg·kg^(-1))respectively.Furthermore,the application of hydrolyzed proteins contributed to a reduction in the available cadmium of soil,31.4%(0.5 mg·kg^(-1))and 21.4%(1 mg·kg^(-1))respectively.The research of this project provides a technical reference for planting vegetables with qualified cadmium content in moderately and slightly cadmium polluted soil.

关 键 词：镉污染 小白菜 水解蛋白 

分 类 号：X53[环境科学与工程—环境工程] S511[农业科学—作物学]