2-氯-6(三氯甲基)吡啶对菜地土壤氮素转化和径流流失及菜心品质的影响  

Effects of Nitrification Inhibitor Nitrapyrin on Nitrogen Transformation and Nitrogen Loss and Quality of Brassica parachinensis in Vegetable Soil

作　　者：许超[1] 邝丽芳[1] 吴启堂[1] 吴良欢[2] 

机构地区：[1]华南农业大学资源环境学院,广东普通高校土壤环境与废物资源农业利用重点实验室,广东高校污水生态处理与水体修复工程技术研究中心,广州510642 [2]浙江大学环境与资源学院,教育部环境修复与生态健康重点实验室,杭州310058

出　　处：《水土保持学报》2013年第6期26-30,共5页Journal of Soil and Water Conservation

基　　金：教育部博士点新教师联合基金项目(20114404120015);国家自然科学基金(41101293);广东高校工程技术研究中心建设项目(2012gczxA1004)

摘　　要：采用室外盆栽种植菜心（Brassicaparachinensis），研究硝化抑制剂2-氯-6（三氯甲基）吡啶（Nitra—pyrin）对红壤菜地土壤氮素转化、径流流失、菜心生长及品质的影响。结果表明，与UR（普通尿素）处理相比，CP（含Nitrapyrin“碧晶”尿素）处理地表径流铵态氮、硝态氮和无机氮流失量分别降低13．1％，12．9％和11．7％；CP处理菜心干重显著增加410．6％，硝酸盐含量显著降低46．4％，可溶性糖含量显著增加88．8%；CP处理土壤铵态氮含量增加1．7％～1172．4％，硝态氮和亚硝态氮含量分别降低12．7％～52．1％和O～6．5％。硝化抑制剂Nitrapyrin能减少地表径流中氮素流失，同时提高菜心产量，改善菜心品质。A pot experiment was carried out in outdoor to investigate the effects of nitrification inhibitor 2- chloro -6 （three chloro methyl pyridine） （Nitrapyrin） on nitrogen transformation, nitrogen loss, the growth and quality of Brassica parachinensis in red vegetable soil. Results showed that compared with the treatment of UR （urea）, the treatment of CP （＂Bijing＂ urea with nitrification inhibitor Nitrapyrin） could reduce the content of ammonium nitrogen, nitrate nitrogen and inorganic nitrogen in surface runoff by 13.1 %, 12.9% and 11.7%, respectively. Compared with the treatment of UR, the dry weight of Brassica parachinensis of the treatment CP significantly increased by 410.6%, the content of nitrate significantly reduced by 46.4~, and the content of soluble sugar significantly increased by 88.8%, respectively. Compared with the treat ment of UR, the treatment of CP could increase the ammonium nitrogen concentration in soil by 1. 7% 1 172.4%, but reduce the concentration of nitrate nitrogen and nitrite nitrogen in soil by 12.7% ~52.1% and 0~6.5%, respectively. Nitrification inhibitor nitrapyrin could reduce the loss of nitrogen in surface run- off, increase output and improye the quality of Brassica parachinensis at the same time.

关 键 词：NITRAPYRIN 硝化抑制剂 菜地 氮素 菜心 

分 类 号：S157.1[农业科学—土壤学] X53[农业科学—农业基础科学]