Study on the Variations of Nitrogen and Phosphorus in Surface Water Body of Paddy Field

doi:10.11924/j.issn.1000-6850.2013-2619

Abstract

Abstract: In order to look for the best fertilization management for controlling N and P loss availably, a field experiment based on independent irrigation system was conducted to study the dynamic characteristics of nitrogen and phosphorus in surface water of paddy field, which applied with six different levels of nitrogen fertilizer. The results showed that the high amounts of fertilizer will enhance the concentration of total nitrogen (TN), ammonium nitrogen (NH4+-N) and nitrate nitrogen (NO3--N) in the surface water. The content of TN, NH4+-N and NO3--N increased at the beginning and then decreased as the time past, finally approached a relatively stable level after a week; NH4+-N in the surface water reached the peak on the following day after fertilizer application, and rapidly decreased to 25.69%-36.80% of the maximum on the third day. The concentration of NO3--N in surface water was lower than that of NH4+-N, and the peak value which appeared during the 3th day to 5th day was 8.87 mg/L, 1.91 mg/L and 1.50 mg/L, respectively. NH4+-N/TN was increased with the amount of nitrogen fertilizer and peaked 2-3 days after fertilizer applied. With the same level of P fertilization, the concentration of TP was increased with the amount of N fertilization. The concentration of TP peaked on the first day after fertilized and decreased afterwards after three times of fertilization.

References

[1] FAO. Statistical databases[S]. Food and Agriculture Organization (FAO) of the United Nations,2001.
[2] Zhu Z L, Chen D L. Nitrogen fertilizer use in China Contributions to food production impacts on the environment and best management strategies[J]. Nutrient Cycling in Agroecosystems,2002 (63):117-127.
[3] Cassman K G, Peng S, Olk D C, et al .Opportunities for increased nitrogen use efficiency from improved resource management in irrigated rice systems[J]. Field Crops Research,1998(56):7-39.
[4] 朱兆良.农田中氮肥的损失与对策[J].土壤与环境,2000,9(1):1-6.
[5] Xing G X, Zhu Z L. An assessment of N loss from agricultural fields to the environment in China[J]. Nutrient Cycling in Agroecosystems,2002(57):67-73.
[6] Xie Y X, Xiong Z Q, Xing G X, et al. Assessment of nitrogen pollutant sources in surface waters of Taihu Lake region[J]. Pedosphere,2007,17(2):200-208.
[7] 宋勇生,范晓晖,林德喜,等.太湖地区稻田氨挥发及影响因素的研究[J].土壤学报,2004,41(2):265-269.
[8] 陆敏,刘敏,黄明蔚,等.大田条件下稻麦轮作土壤氮素流失研究[J].农业环境科学学报,2006,25(5):1234-1239.
[9] 李峰,王凯荣.红壤丘陵区稻田不同施肥模式对水环境影响的监测评价[J].农业环境科学学报,2004,23(1):67-71.
[10] 王小治,朱建国,宝川靖和,等.施用尿素稻田表层水氮素的动态变化及模式表征[J].农业环境科学学报,2004,23(5):852-856.
[11] 陈国军,曹林奎,陆贻通,等.稻田氮素流失规律测坑研究[J].上海交通大学学报:农业科学学报,2003,21(4):320-324.
[12] 王德建,林静慧,夏立忠.太湖地区稻麦轮作农田氮素淋洗特点[J].中国生态农业学报,2001,9(1):16-18.
[13] 邓美华,尹斌,张绍林,等,不同施氮量和施氮方式对稻田氨挥发损失的影响[J].土壤,2006,38(3):263-269.
[14] 李菊梅,李冬初,徐明岗,等,红壤双季稻田不同施肥下的氨挥发损失及其影响因素[J].生态环境,2008,17(4):1610-1613.
[15] 陈刚,徐阳春,沈其荣.施氮水平对水稻生育后期地上部氨挥发的影响[J].应用生态学报,2008,19(7):1483-1488.
[16] 金洁,杨京平,施洪鑫,等.水稻田面水中氮磷素的动态特征研究[J].农业环境科学学报,2005,24(2):357-361.
[17] Sharpley A N, harapa S C, Wedepohl R, et al. Managing agriculture Phosphousprotection of surface water:Issues and options[J]. Envriron Qual,1994(23):437-451.
[18] Lee G F. Rule of phosphours in ectrophication and diffuse source control[J]. Water Qual,1973(24):904-910.
[19] 鲁如坤.植物营养与肥料原理[M].北京:农业出版社,2000:201-202.
[20] 张维理,冀宏杰,Kolbe H,等.中国农业面源污染形势估计及控制对策 II.欧美国家农业面源污染状况及控制[J].中国农业科学,2004 (37):1018-1025.
[21] 王小治,尹微琴,蔡玉琪,等.施用不同尿素对稻季不同层次土壤溶液中氮形态的影响[J].生态环境学报,2009,18(4):1516-1521.
[22] 郑圣先,刘德林,聂军,等.控释氮肥在淹水稻田土壤上的去向及利用率[J].植物营养与肥料学报,2004(10):137-142.
[23] 李方敏,樊小林,刘芳,等.控释肥料对稻田氧化亚氮排放的影响[J].应用生态学报,2004(15):2170-2174.