[1]Liang Haofeng,Dang Ke,Fan Zihan,et al.Effects of Mulch Measures on Nitrogen Transport, Yield and Water and Nitrogen Use Efficiency of Maize in Different Ecological Zones[J].Research of Soil and Water Conservation,2024,31(06):176-187.[doi:10.13869/j.cnki.rswc.2024.06.037]
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Effects of Mulch Measures on Nitrogen Transport, Yield and Water and Nitrogen Use Efficiency of Maize in Different Ecological Zones
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
31
Number of periods:
2024 06
Page number:
176-187
Column:
Public date:
2024-12-10
- Title:
- Effects of Mulch Measures on Nitrogen Transport, Yield and Water and Nitrogen Use Efficiency of Maize in Different Ecological Zones
- CLC:
- S363; S342.1
- DOI:
- 10.13869/j.cnki.rswc.2024.06.037
- Abstract:
- [Objective]The aims of this study are to clarify the effects of mulching methods on maize nitrogen transport, yield and water and nitrogen utilization efficiency in different ecological zones in northwest China, and to provide a scientific basis for mitigating the acute conflicts between crop production and water scarcity in dryland areas. [Methods]A field experiment was conducted in 2022 in Yuzong County, Lanzhou City, Gansu Province, Anding District, Dingxi City, Gansu Province, and Changwu County, Xianyang City, Shaanxi Province, with three ecological zones with different precipitation conditions, namely, arid dry zone(YZ), semi-arid zone(DX), and semi-moisture dry zone(CW), to investigate the effects of film mulching(FM)and straw mulching(SM)on the accumulation, distribution, and efficiency of N and N utilization, as well as the accumulation, distribution and efficiency of N and N utilization of maize organs in three different ecological zones in the northwest China. The effects of FM and SM on dry matter and nitrogen accumulation, distribution, transfer, water and nitrogen utilization efficiency and yield formation in different organs of maize were investigated. [Results](1)Mulching measures significantly affected the soil environment, increased the water content of 0—100 cm soil layer and inorganic nitrogen content of surface soil in all ecological zones, and FM increased the surface temperature of soil during the whole reproductive period, while SM had a heat preservation effect in the late reproductive stage.(2)Agronomic traits and dry matter accumulation at spitting and maturity stages in each ecological zone generally showed the order: CW>YZ>DX, and the mulching treatment improved plant height and stem thickness at spitting stage and plant height, stem thickness, number of nodes, ear height and dry matter accumulation at maturity stage of maize compared with CK, especially in the FM treatment.(3)Total corn grain and plant nitrogen accumulation of the mulch treatments in CW was the highest among the three ecological zones, and the mulch promoted the operation of stem and leaf nitrogen to the kernel, which in turn increased the nitrogen harvest index and water use efficiency, but the nitrogen harvest index of FM in DX and the water use efficiency of FM in YZ had the highest increase compared with that in CK, which amounted to 6.91% and 70.58%, respectively.(4)Corn kernel yield in all ecological zones followed the order: CW>YZ>DX, and mulching treatments had significant yield increases in all ecological zones, with yield increase effects of FM>SM, in which the yield increases of FM in DX and YZ were higher than that of CW, amounting to 52.33% and 52.55%, respectively, but the increase of SM in CW was the highest, amounting to 16.76%. [Conclusion]Film mulching and straw mulching improve water and nitrogen utilization efficiency and yield of maize by improving soil temperature, moisture and surface inorganic nitrogen content, among which film mulching has the best effect. In the semi-arid and dry zone, the most significant response of mulching is on yield, and the best response is on straw mulching in the semi-humid and dry zone.
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Last Update:
2024-12-10