不同种植年限和施肥量对日光温室土壤锌累积的影响  

Effects of Different Planting Years and Organic Manure Fertilization on Zn Accumulation in Greenhouse Soil

作　　者：王俊[1,2] 郭颖[1,2] 吴蕊[1,3] 史奕[1] 陈欣[1] 

机构地区：[1]中国科学院沈阳应用生态研究所陆地生态过程重点实验室,辽宁沈阳110016 [2]中国科学院研究生院,北京100049 [3]沈阳建筑大学,辽宁沈阳110168

出　　处：《农业环境科学学报》2009年第1期89-94,共6页Journal of Agro-Environment Science

基　　金：国家科技支撑计划(2007BAD89B03);中国科学院知识创新工程重要方向项目(KSCXZ-YW-N-037)

摘　　要：以辽宁省沈阳市郊某黄瓜生产基地较为常见的5a、2a和1a温室大棚作为研究对象,对表层土壤(0～10、10～20、20～40cm)进行分析,探讨不同种植年限和施肥条件下温室土壤锌的累积情况及其来源。结果表明,不同种植年限的温室土壤锌含量均未超过国家土壤环境质量一级标准(Zn≤100mg·kg-1),其中种植年限为5a的温室土壤锌含量最高,达到47.17mg·kg-1。土壤锌含量随土壤深度的增加呈下降趋势,而且与温室种植年限呈极显著正相关(P<0.01),与土壤有机质呈极显著正相关(P<0.01)。通过设置不同有机肥施肥处理(0、10、20、40和60t·hm-2)的田间小区试验发现,所有年限温室土壤锌含量都高于对照(1a温室施10t·hm-2有机肥处理除外),并且随着施肥量的增加而增加,说明有机肥是蔬菜温室土壤锌累积的重要来源。Soil samples （0-10, 10-20 and 20-40 cm）were collected from a greenhouse having been planted with cucumber for 1, 2, and 5 years in Shenyang suburb to explore the effects of different planting years and organic manure fertilization on Zn accumulation in soil, and to identify the source of the Zn. The results showed that under the condition of no organic manure fertilization, the Zn content in the soils with different planting years in greenhouse did not surpass the Chinese Environmental Quality Standard for Soils （GB 15618-1995 ）（SEPAC, 1995 ）（Zn ≤ 100 mg-kg^-1 ）, being the highest （47.17 mg·kg^-1 ）in the soil planted for 5 years. The soil Zn content had a decreasing trend with soil depth, and had significant positive correlations with planting year （P〈0.01）and soil organic matter content （P〈0.01）. After organic manure fertilization（ 10, 20, 40, and 60 t·hm^-2）, the Zn content of soils with different planting years was higher than the contrast, except the soil planted for 1 year and applied with 10 t· hm^-2 of organic manure, and increased with increasing fertilization rate, suggesting that the Zn accumulation in greenhouse soil was mainly attributed to organic manure.

关 键 词：有机肥 温室土壤 重金属 锌 

分 类 号：X53[环境科学与工程—环境工程]