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Chinese Agricultural Science Bulletin ›› 2023, Vol. 39 ›› Issue (15): 69-75.doi: 10.11924/j.issn.1000-6850.casb2022-0431

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Characteristics of Nitrogen and Phosphorus Loss in Farmland and the Influencing Factors

CHANG Junfeng(), LIU Ying, LI Chen, LUO Mei, MA Youhua()   

  1. Key Laboratory of Farmland Ecological Conservation and Pollution Prevention and Control of Anhui Province, College of Resources and Environment, Anhui Agricultural University, Hefei 230036
  • Received:2022-05-30 Revised:2022-07-04 Online:2023-05-25 Published:2023-05-22

Abstract:

Nitrogen and phosphorus loss from farmland is one of the main sources of agricultural non-point source pollution, which can result in a high risk of water eutrophication. The study on the characteristics of nitrogen and phosphorus loss in farmland will provide a basis for the control and treatment of agricultural non-point source pollution. This paper summarized the loss of farmland nitrogen and phosphorus from the way, the form, the concentration and the amount, and analyzed the influence of fertilization, rainfall, cultivation method, planting structure, field drains, field ditches, etc. on the characteristics of farmland nitrogen and phosphorus loss. The effects of new cultivation methods of modern agriculture and the combination of planting and rearing on nitrogen and phosphorus loss in farmland require further research.

Key words: farmland, nitrogen and phosphorus loss, fertilization, rainfall, non-point source pollution