[1]LI Tao,YAN Ziwei,WANG Yan,et al.Analysis of Nitrogen and Phosphorus Losses and Environmental Benefits Under Different Planting Patterns in Danjiangkou Reservoir Area[J].Research of Soil and Water Conservation,2021,28(05):35-40.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
28
Number of periods:
2021 05
Page number:
35-40
Column:
Public date:
2021-08-20
- Title:
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Analysis of Nitrogen and Phosphorus Losses and Environmental Benefits Under Different Planting Patterns in Danjiangkou Reservoir Area
- Author(s):
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LI Tao1,YAN Ziwei2,WANG Yan2,ZHANG Xiuling2,YAN Chang3,HAO Fuxin4,WU Shan4,LI Hui5,HE Jian6,LIN Shan2
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(1.Shiyan Agro-ecology Environmental Protection Station,Shiyan,Hubei 442000,China;2.College of Recourses and Environment,Huazhong Agricultural University/Key Laboratory of Arable Land Conservation in Middle and Lower Reaches of Yangtze River,Ministry of Agriculture,Wuhan 430070,China;3.Hubei Agricultural Ecological Environment Protection Station,Wuhan 430070,China;4.Xiangyang Extensive Center of Agricultural Technology,Xiangyang,Hubei 441021,China;5.Shiyan Yunyang District Agricultural......)
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- Keywords:
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Danjiangkou Reservoir area; sloping farmland; nitrogen and phosphorus loss; Ginkgo+Paeonia intercropping; shamrock+safflower rotation; economic benefits
- CLC:
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S157; F326
- DOI:
-
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- Abstract:
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For a long time,the non-point source pollution caused by the losses of nitrogen and phosphorus from sloping farmland in Danjiangkou Reservoir has been serious,which has affected the local economic benefits.The effects of maize monocropping,Ginkgo biloba and peony intercropping and shamrock and safflower rotation cropping on surface nitrogen and phosphorus losses of sloping farmland in Danjiangkou Reservoir area were studied by field plot experiment for three years,and the economic benefits were analyzed. The results showed that the intercropping of ginkgo+peony and rotation of shamrock+safflower could significantly inhibit the losses of nitrogen and phosphorus,and effectively reduce the soil and water loss in sloping farmland. Compared with maize monoculture,sediment loss of Ginkgo+Paeonia intercropping and Shamrock+Safflower rotation decreased by 8.30% and 8.94%,runoff of total nitrogen decreased by 28.69% and 22.92%,and runoff of total phosphorus decreased by 29.25% and 37.26% respectively. Ginkgo+peony intercropping and shamrock+safflower rotation cropping modes had higher economic benefits than maize monoculture,especially the net income of shamrock+safflower was 19.29 times that of maize monoculture. Based on the comprehensive analysis of nitrogen and phosphorus non-point source pollution control and economic benefit,the shamrock vegetable+safflower rotation pattern is a more reasonable ecological planting pattern in Danjiangkou reservoir area,which can be further popularized and applied.