Effects of Different Thickness of Degradable Plastic Film on the Loss of Dissolved Nitrogen and Phosphorus in Sloping Farmland

WANG Kaili; ZHANG Hanyu; FANG Nufang; LIU Qianjin; LI Jingjiang

doi:10.13870/j.cnki.stbcxb.2024.02.010

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Effects of Different Thickness of Degradable Plastic Film on the Loss of Dissolved Nitrogen and Phosphorus in Sloping Farmland

更新时间：2025-03-12

- Effects of Different Thickness of Degradable Plastic Film on the Loss of Dissolved Nitrogen and Phosphorus in Sloping Farmland
- Vol. 38, Issue 2, Pages: 406-413(2024)
- 作者机构：
  
  1. 山东省水土保持与环境保育重点实验室, 临沂大学资源环境学院,山东,临沂,276005
  2. 中国科学院教育部水土保持与生态环境研究中心, 陕西杨凌,712100
  3. 中国科学院水利部水土保持研究所, 黄土高原土壤侵蚀与旱地农业国家重点实验室, 陕西杨凌,712100
  4. 中国科学院大学,北京,100049
  5. 西北农林科技大学水土保持研究所, 陕西杨凌,712100
- 作者简介：
- 基金信息：
- DOI：10.13870/j.cnki.stbcxb.2024.02.010
  CLC： S157.1
- Published：2024
- 稿件说明：
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WANG Kaili, ZHANG Hanyu, FANG Nufang, et al. Effects of Different Thickness of Degradable Plastic Film on the Loss of Dissolved Nitrogen and Phosphorus in Sloping Farmland[J]. 2024, 38(2): 406-413.
DOI：

WANG Kaili, ZHANG Hanyu, FANG Nufang, et al. Effects of Different Thickness of Degradable Plastic Film on the Loss of Dissolved Nitrogen and Phosphorus in Sloping Farmland[J]. 2024, 38(2): 406-413. DOI： 10.13870/j.cnki.stbcxb.2024.02.010.

摘要

[目的] 为探究降解地膜覆盖对径流及溶解态氮磷流失的影响。[方法] 利用野外原位径流小区

以覆膜垄作花生种植为研究对象

设置0.003 mm厚聚乙烯普通地膜覆盖处理(PF)和厚度为0.006 mm (BF1)

0.008 mm (BF2)

0.010 mm (BF3)

0.012 mm (BF4)的降解地膜覆盖处理及未覆膜处理(CK)

测定不同处理在自然降雨条件下的径流量及径流中铵态氮(NH4+—N)、硝态氮(NO3-—N)、速效磷(PO43-—P)浓度

分析不同厚度降解地膜覆盖条件下径流及养分流失特征。[结果] (1)降解地膜降解所需时间随地膜厚度的增加而增加。(2)各处理的累积径流量由小到大为BF1＜BF2＜BF3＜PF＜CK＜BF4

BF1与BF4之间差异显著(p＜0.05)。(3)与CK相比

各覆膜处理均能不同程度减少氮磷累积流失量。其中

BF1处理对NH4+-N和NO3-—N流失量的削减效果较好

而BF2处理对PO43-—P流失量的削减效果较好。(4)在5个覆膜处理中

BF4处理的NO3--N和PO43--P流失量最高

而BF3处理的NH4+—N流失量最高。[结论] 研究结果可为防治覆膜坡耕地水土及养分流失、解决农业面源污染等问题提供理论基础

对绿色农业发展和生态可持续发展具有重要意义。

Abstract

[Objective] To explore the effects of degradable mulch film mulching on runoff and loss of dissolved nitrogen and phosphorus. [Methods] Polyethylene film mulching (PF) with a thickness of 0.003 mm

degradable film mulching with a thickness of 0.006 mm (BF1)

0.008 mm (BF2)

0.010 mm (BF3) and 0.012 mm (BF4)

and no mulch (CK) were set up. In in-situ runoff plots

using mulching on ridge tillage peanut planting as the study object

the runoff and concentration of ammonium nitrogen (NH4+—N)

nitrate nitrogen (NO3-—N)

and available phosphorus (PO43-—P) in runoff under natural rainfall conditions were measured

and the runoff and nutrient loss characteristics under different thickness of degradable mulch film were analyzed. [Results] (1) The degradation time of degradable film increased with the increase of film thickness. (2) The order of cumulative runoff was BF1＜BF2＜BF3＜PF＜CK＜BF4

and there was significant difference between BF1 and BF4 (p＜0.05). (3) Compared with CK

different film mulching can reduce the cumulative loss of nitrogen and phosphorus to varying degrees. BF1 had the most significant effect on reducing the loss of NH4+-N and NO3-—N

while BF2 had the most significant effect on reducing the loss of PO43-—P. (4) Among the five laminating treatments

the NO3-—N and PO43-—P loss in BF4 treatment was the highest

while the NH4+-N loss in BF3 treatment was the highest. [Conclusion] The research results can provide a theoretical basis for the prevention and control of water

soil

and nutrient loss in sloping farmland mulching with plastic film and solving the problems of agricultural non-point source pollution

and have important significance for green agricultural development and ecological sustainable development.

关键词

Keywords

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