有机肥对设施菜地土壤硝酸盐累积的影响  

Influence of Organic Manure Fertilization on Nitrate Accumulation under Protected Cultivation Condition

作　　者：张迪[1,2] 赵牧秋[1] 牛明芬[2] 王少军[1,2] 史奕[1] 

机构地区：[1]中科院沈阳应用生态研究所污染生态与环境生态工程研究中心,辽宁沈阳110016 [2]沈阳建筑大学市政与环境工程学院,辽宁沈阳110168

出　　处：《环境科学与技术》2010年第S1期115-119,共5页Environmental Science & Technology

基　　金：国家科技支撑计划项目(2008BADA7B08);国家自然科学基金(30970479)

摘　　要：以辽宁省新民市某设施大棚为研究对象,对耕层土壤(0～10、10～20、20～40cm)进行分析,研究了在黄瓜生长期(在保护地栽培条件下)不同有机肥施入量对不同施肥年限设施土壤硝酸盐累积的影响。结果表明,耕层土壤硝酸盐含量的变化与有机肥施用量和施肥年限均有密切的关系。各土层硝酸盐含量都随着施肥年限和施肥量的增加而增加,不同施肥年限间表现出显著差异(P<0.05),尤其是0～10cm土层差异显著。当施入高量有机肥时(处理M4),土壤硝酸盐含量呈显著积累(P<0.05),而且在施肥2年后土壤硝酸盐含量最高达到96.54mg/kg,在黄瓜生长的中后期土壤各土层都出现了不同程度的硝酸盐累积;但在施入中低量有机肥的条件下,土壤硝酸盐含量与对照相比虽有一定的增加但差异不显著。An experiment was conducted in Xinmin suburb to study the influence of different planting years and organic manure rate on nitrate accumulation by collecting soil samples(0 ～10、10 ～20、20 ～40cm) planted with cucumber in greenhouse soil.The results showed that the accumulation characteristics of nitrate in soil were affected by the different planting years and the rate of organic manure. The nitrate contents of soil were increased all along with planting years and organic manure rates,between different planting years the difference was significant(P<0.05) ,especially the soil of 0～ 10cm. When the amount of organic fertilizer was the highest(M4) ,the content of nitrate had conspicuous accumulation(P<0.05) . In addition,the highest content of nitrate in soil was 96.54 mg/kg after 2 years,there were different levels about nitrate accumulation in the mid and late time of cucumber;but when the quantitative of organic manure was lower,although the content of nitrate in soil was higher than comparison,the difference was insignificant.

关 键 词：设施大棚 有机肥 施肥年限 硝酸盐 

分 类 号：S626[农业科学—园艺学]