不同农业种植模式土壤-作物系统中Zn的分配与迁移  

Distribution and Translocation of Zinc in Soil-crop Systems under Different Cropping Modes

作　　者：刘凯[1,2] 张健[1] 杨万勤[1] 吴福忠[1] 刘洋[1] 李勇[1] 胡开波[2] 王守强[2] 左明华 

机构地区：[1]四川农业大学林业生态工程省级重点实验室,四川雅安625014 [2]四川省林业勘察设计研究院,成都610081

出　　处：《四川农业大学学报》2012年第1期30-36,共7页Journal of Sichuan Agricultural University

基　　金：四川省科技支撑计划重点项目(2011NZ0063);长江上游低山丘陵区生态综合整治技术及示范(2011BAC09B05)

摘　　要：为了解不同农业种植模式土壤-作物系统中Zn的含量与变化,研究了岷江下游丘陵区3种典型农业种植模式(M1:玉米+红薯-小白菜+菠菜,M2:玉米+生姜-茎用芥菜,M3:水稻)土壤和作物中Zn的分配和迁移特征。结果发现,土壤全量Zn含量变化在M1、M2中表现为显著下降后又显著上升的特征,M3中为显著下降。作物食用器官Zn含量特征为蔬菜作物(小白菜、菠菜、茎用芥菜)>根类作物(红薯、生姜)>谷物类作物(玉米、水稻)。除小白菜外,作物非食用器官中Zn含量均显著大于食用器官。To understand the effects of cropping modes to Zn content and its variations in soil-crop systems,field experiments were carried out in a hilly region of lower reaches of Minjiang River in China.Three typical cropping systems,including maize ＋ sweet potato-Chinese cabbage ＋ spinach（M1）,maize ＋ ginger-stem mustard（M2）,and rice（M3）,were selected.And the distribution and translocation of Zn in soil and crops were investigated under these different cropping systems.The results showed that,the variations of soil Zn content were decreased and then increased significantly in M1 and M2,but which continually decreased in M3.Zn content in edible parts of crops showed the same order in three systems as： vegetables（cabbage,spinach and mustard） root crops（sweet potato and ginger） cereal crops（maize and rice）.Excepting for cabbage,edible parts of crops displayed higher Zn content compared with inedible parts.

关 键 词：种植模式 土壤 作物 锌 分配 迁移 

分 类 号：X171.5[环境科学与工程—环境科学] X53