河南农业科学
河南農業科學
하남농업과학
JOURNAL OF HENAN AGRICULTURAL SCIENCES
2013年
10期
63-65
,共3页
氮素流失%肥料%水环境%农田%模拟降雨
氮素流失%肥料%水環境%農田%模擬降雨
담소류실%비료%수배경%농전%모의강우
nitrogen leaching%fertilizer%water environment%farmland%artificial rainfall
为了解肥料中氮素流失特征，设计不同水肥处理，并对不同去向（径流、渗流和渗漏到泥沙）氮素进行了跟踪监测。结果表明：渗流水中肥料氮素含量最高，占总流失量的36.55％～42.86％，泥沙中肥料氮素含量占30.77％～40.00％，随径流水流失的肥料氮素量占23.45％～26.59％；径流、渗流水、泥沙中N O3- N含量与施氮量密切相关，施氮量越高，N O3- N浓度越高；渗流中的肥料氮素含量及N O3- N浓度均高于径流水，表明施用氮肥对地下水环境构成较大威胁。
為瞭解肥料中氮素流失特徵，設計不同水肥處理，併對不同去嚮（徑流、滲流和滲漏到泥沙）氮素進行瞭跟蹤鑑測。結果錶明：滲流水中肥料氮素含量最高，佔總流失量的36.55％～42.86％，泥沙中肥料氮素含量佔30.77％～40.00％，隨徑流水流失的肥料氮素量佔23.45％～26.59％；徑流、滲流水、泥沙中N O3- N含量與施氮量密切相關，施氮量越高，N O3- N濃度越高；滲流中的肥料氮素含量及N O3- N濃度均高于徑流水，錶明施用氮肥對地下水環境構成較大威脅。
위료해비료중담소류실특정，설계불동수비처리，병대불동거향（경류、삼류화삼루도니사）담소진행료근종감측。결과표명：삼류수중비료담소함량최고，점총류실량적36.55％～42.86％，니사중비료담소함량점30.77％～40.00％，수경류수류실적비료담소량점23.45％～26.59％；경류、삼류수、니사중N O3- N함량여시담량밀절상관，시담량월고，N O3- N농도월고；삼류중적비료담소함량급N O3- N농도균고우경류수，표명시용담비대지하수배경구성교대위협。
To understand the characteristics of fertilizer nitrogen(N) leaching under artificial rain-fall conditions ,different water-nitrogen treatments were designed to track N .The results showed that the fate of fertilizer N leaching could be divided into three parts :runoff ,seepage and sedi-ment brought by seepage ,the fertilizer N content in the seepages was the highest ,accounting for 36 .55% -42 .86% of the total fertilizer N leaching ,and fertilizer N content in the sediment and the runoffs took up 30 .77% -40 .00% and 23 .45% -26 .59% ,respectively .The NO3--N concen-tration in the runoffs ,seepages ,and sediment was significantly positively related with the N appli-cation ;the fertilizer N content and NO3--N concentration in the seepages were notably higher than those in the runoffs ,suggesting that the fertilizer nitrogen application would threaten the groundwater environment .
