Influence of Different Management Mode of Fertilization on Nitrogen Losses in Runoff from Nursery Land in a Catchment Area

YE Zhaojin1; 2; LIAO Min1; 2; HUANG Yu1

doi:10.13870/j.cnki.stbcxb.2016.06.006

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Influence of Different Management Mode of Fertilization on Nitrogen Losses in Runoff from Nursery Land in a Catchment Area

更新时间：2025-03-12

- Influence of Different Management Mode of Fertilization on Nitrogen Losses in Runoff from Nursery Land in a Catchment Area
- Vol. 30, Issue 6, Pages: 30-37(2016)
- 作者机构：
  
  1. 浙江大学环境与资源学院,杭州,310058
  2. 浙江省亚热带土壤与植物营养重点研究实验室,杭州,310058
  3. 浙江省长兴县环境监测站，浙江长兴,313100
- 作者简介：
- 基金信息：
- DOI：10.13870/j.cnki.stbcxb.2016.06.006
  CLC： X131;S157.4
- Published：2016
- 稿件说明：
移动端阅览
YE Zhaojin1, 2, LIAO Min1, et al. Influence of Different Management Mode of Fertilization on Nitrogen Losses in Runoff from Nursery Land in a Catchment Area[J]. 2016, 30(6): 30-37.
DOI：

YE Zhaojin1, 2, LIAO Min1, et al. Influence of Different Management Mode of Fertilization on Nitrogen Losses in Runoff from Nursery Land in a Catchment Area[J]. 2016, 30(6): 30-37. DOI： 10.13870/j.cnki.stbcxb.2016.06.006.

摘要

采用田间径流小区定位研究方法，以合溪水库集雨区苗木种植地为研究对象，设置了撒施（对照）、地膜覆盖、秸秆覆盖、区外设置植草缓冲带、条施、穴施6种施肥管理处理小区，探究不同施肥管理模式对合溪水库集雨区苗木地径流氮素流失的影响，筛选最佳施肥管理模式。结果表明：不同施肥管理模式下，苗木地地表径流年总氮素径流流失通量大小顺序为：撒施（对照）＞覆膜＞条施＞穴施＞区外植草缓冲带＞秸秆覆盖，撒施（对照）、地膜覆盖、条施、穴施、区外设置植草缓冲带和秸秆覆盖6种施肥管理模式下的年总氮素径流流失通量分别为：35.61，18.30，15.86，12.94，8.18，3.44 kg/（hm2·a），说明穴施、区外设置植草缓冲带和秸秆覆盖是较佳的施肥管理模式，将其优化组合后会显著消减水库集雨区苗木地径流氮素流失及其对水库水质的潜在影响。此外，不同施肥管理模式下，苗木地径流水样氮素流失的主要形态为颗粒态氮，其次为硝态氮，其中，撒施（对照）、地膜覆盖、秸秆覆盖、区外植草缓冲带、条施和穴施年均流失的颗粒态氮占流失总氮的比例分别为69.11%，68.87%，68.04%，61.89%，61.17%和65.09%；年均流失的硝态氮占流失总氮的比例分别为23.18%，23.36%，20.21%，27.20%，32.02%和28.71%。

Abstract

The aims of the present study were to maximize the reduction of nitrogen loss from farmland and protect the main source of drinking water and stream water quality for Hexi reservoir. Site-specific observation was carried out in the present study

plots for nursery land with six fertilization management modes were selected

including broadcast placement (contrast)

plastic mulching

straw mulching

setting buffer for planting grass around nursery land

band placement and hole placement

to explore the influence of different fertilization management mode on nitrogen losses in surface runoff and screen the best fertilization management mode in the catchment area of Hexi reservoir. The results showed that: under different fertilization management modes

the order of the concentration of annual nitrogen loss in the runoff was: broadcast placement (contrast)＞plastic mulching＞band placement＞hole placement＞setting buffer for planting grass around nursery land＞straw mulching. The mean annual runoff load of total nitrogen from broadcast placement (contrast)

plastic mulching

band placement

hole placement

setting buffer for planting grass around nursery land and straw mulching was 35.61

18.30

15.86

12.94

8.18

3.44 kg/(hm2·a)

respectively. The results indicated that hole placement

setting buffer for planting grass and straw mulching were better fertilization management modes

which would significantly reduce nitrogen runoff from non-point source output of nursery land and weaken the potential impact on water quality of Hexi reservoir by optimum combination of the above-mentioned better fertilization management mode in nursery land in the catchment area of Hexi reservoir in Changxing county. In addition

particulate nitrogen was the dominant form of nitrogen loss in the runoff

followed by nitrate nitrogen under all fertilization management modes. Furthermore

for the management mode of broadcast placement(contrast)

plastic mulching

straw mulching

setting buffer for planting grass around nursery land

band placement and hole placement

annual loss of particulate nitrogen in the runoff accounted for about 69.11%

68.87%

68.04%

61.89%

61.17% and 65.09% of the total nitrogen losses

respectively; annual loss of nitrate nitrogen in the runoff accounted for about 23.18%

23.36%

20.21%

27.20%

32.02% and 28.71% of the total nitrogen losses

respectively.

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