Effects of CRNF Application on Nitrogen Dynamics and Loss of Leachate Water in Spring Maize Soil in Hilly Area of South China

doi:10.13870/j.cnki.stbcxb.2017.04.034

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Effects of CRNF Application on Nitrogen Dynamics and Loss of Leachate Water in Spring Maize Soil in Hilly Area of South China

更新时间：2025-03-12

- Effects of CRNF Application on Nitrogen Dynamics and Loss of Leachate Water in Spring Maize Soil in Hilly Area of South China
- Vol. 31, Issue 4, Pages: 211-218(2017)
- 作者机构：
  
  湖南农业大学资源环境学院，农田污染控制与农业资源利用湖南省重点实验室，植物营养湖南省普通高等学校重点实验室，土壤肥料资源高效利用国家工程实验室,长沙,410128
- 作者简介：
- 基金信息：
- DOI：10.13870/j.cnki.stbcxb.2017.04.034
  CLC： S143.1+5
- Published：2017
- 稿件说明：
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Effects of CRNF Application on Nitrogen Dynamics and Loss of Leachate Water in Spring Maize Soil in Hilly Area of South China[J]. 2017, 31(4): 211-218.
DOI：

Effects of CRNF Application on Nitrogen Dynamics and Loss of Leachate Water in Spring Maize Soil in Hilly Area of South China[J]. 2017, 31(4): 211-218. DOI： 10.13870/j.cnki.stbcxb.2017.04.034.

摘要

为提高我国南方丘陵地区旱地土壤作物种植的氮肥利用率，减少资源浪费和降低环境污染风险，通过采用田间小区定位试验进行土壤养分渗漏观测，研究比较了不施肥处理（T1）、普通尿素处理（T2）以及不同施氮量的控释氮肥处理（T3～T6）的TN、NO3-—N和NH4+—N的流失浓度变化及其损失负荷特征。结果表明：在168～240 kg N/hm2施氮水平变化内，渗漏水量在3 888.40～3 948.69 L之间，即施肥量的增加或减少对渗漏体积的影响不显著（P＞0.05）；控释氮肥处理T3的TN、NO3-—N和NH4+—N的平均流失浓度分别是32.66，29.41，0.26 mg/L，比等氮量施用的T2处理分别降低了24.99%（P＜0.01），25.56%（P＜0.01）和25.71%（P＜0.05）；同样T3在损失负荷方面TN、NO3-—N和NH4+—N分别为53.07，47.14，0.47 kg N/hm2，较T2分别降低了24.10%（P＜0.01），25.62%（P＜0.01）和18.97%（P＞0.05）。当控释氮肥减氮10%，20%，30%时，其TN损失浓度为28.81，26.50，24.34 mg/L，较T3分别降低了11.79%（P＞0.05），18.86%（P＜0.05），25.47%（P＜0.05）；损失负荷为41.78，36.62，33.90 kg N/hm2，较T3分别降低了21.27%（P＜0.01），31.00%（P＜0.01），36.12（P＜0.01）。NO3-—N是渗漏氮素损失的关键成分，占TN损失负荷88.83%～92.75%，DON次之。控释氮肥在192 kg N/hm2的投入下能够有效的减少氮素渗漏损失，降低环境污染风险，并且还可以增产增效。

Abstract

In order to improve the nitrogen use efficiency and reduce the resource waste and the risk of environmental pollution

a study on the leakage loss of controlled release nitrogen fertilizer (CRNF) application in hilly area of South China was conducted. The effects of CRNF (T3～T6) application on nitrogen dynamics and loss of TN，NO3-—N and NH4+—N in leachate water under different treatments in Spring Maize soil were explored. The results showed that the leakage water was 3 888.40～3 948.69 L when the nitrogen application rate was 168～240 kg N/hm2

hence fertilizer application rate had no significant effect on the leakage volume (P＞0.05). Average leaching loss concentration of TN

NO3-—N and NH4+—N under T3 treatment were as follows 32.66 mg/L

29.41 mg/L

and 0.26 mg/L. Compared with the application of common urea (T2)

T3 treatment with the same amount of nitrogen application rate decreased by 24.99% (P＜0.01)

25.56 % (P＜0.01) and 25.71 % (P＜0.05)

respectively. Meanwhile

the loss load decreased by 24.10 %( P＜0.01)

25.62 %( P＜0.01) and 18.97 %(P＞0.05)

respectively

and namely 53.07

47.14 and 0.47 kg N/hm2. When the nitrogen fertilizer application rate was reduced by 10 %

20%

30%

the corresponding average TN loss concentration were 28.81

26.50 and 24.34 mg/L

which decreased by 11.79%（P＞0.05）

18.86%（P＜0.05）

25.47%（P＜0.05）compared to T3. Similarly

the loss load were 41.78

36.62

and 33.90 kg N/hm2

which decreased by 21.27%（P＜0.01）

31.00%（P＜0.01）

36.12（P＜0.01）

respectively. NO3--N is the major component of leakage nitrogen loss

which accounted for 88.83%～92.75% of TN loss load

and DON was also not negligible. During the planting of Spring Maize in dry land

the CRNF application rate with 192 kg/hm2 could effectively reduce the loss of nitrogen leaching and the risk of environmental pollution

and even increase yield and efficiency.

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Related Institution

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WANG Ji-qing1,LIU She-ping1,HAN Bao-wen2 (1.College of Agriculture and Forestry,Hebei North University,Zhangjiakou,Hebei 075000,2.Institute ofAgricultural Resources and Environment,Hebei Academy of Agriculture and Forestry Sciences,,)

YE Jing1,YU Qiao-gang1,YANG Shao-na2,JIANG Li-na1,MA Jun-wei1,WANG Qiang1,WANG jian-mei1,SUN Wan-chun1,FU Jian-rong(1.Institute of Environment,Resource,Soil and Fertilizer,Zhejiang Academy of Agricultural Sciences,Hangzhou,Zhejiang 310021,2.Central Station of Agro-techniques Extension,Bureau of Agriculture and Forestry,,)

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