不同耕作措施对棕壤氮磷淋失的影响
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S158

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国家重点研发计划项目(2018YFD0800901)


Effects of Different Tillage Measures on Nitrogen and Phosphorus Leaching in the Burozem Cropland
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    摘要:

    为探究不同耕作措施对氮磷淋失的调控作用,在东北棕壤区采用田间试验种植玉米研究不同处理(旋耕、免耕、翻耕及翻耕+秸秆还田)对土壤氮磷淋失、耕层养分库容及作物产量的影响。结果表明,与旋耕相比,免耕处理降低水分淋失和氮磷淋失,玉米产量有所下降。翻耕处理增加水分淋失风险,有效耕层养分库容和玉米产量均有所增加,对氮磷淋失具有一定调控作用。翻耕+秸秆还田处理降低水分淋失和氮磷淋失,且提升耕层养分库容和玉米产量。综上,免耕对棕壤氮磷淋失调控效果优于翻耕,翻耕结合秸秆还田更有利于降低氮磷淋失风险。

    Abstract:

    To investigate the effects of different tillage measures on maize yield and nitrogen(N) and phosphorus(P)leaching, the field experiment was conducted in the burozem cropland for single maize of Northeast China. Four treatments were designed, including rotary-tillage(RT), no-tillage(NT), deep ploughing-tillage(DT), and deep ploughing with straw incorporation(DTS). We determined the effects of different treatments on N and P leaching, nutrient pools in arable layer, and maize yield. The results showed that compared to RT, NT treatment decreased the flow amount of leaching and N/P leaching, while maize yield was reduced. DT treatment increased the flow amount of leaching, whereas nutrient pools in arable layer and maize yield were enhanced, indicating the regulating effect on N/P leaching. DTS treatment decreased the flow amount of leaching and N/P leaching, and additionally improved nutrient pools in arable layer and maize yield. In conclusion, the no-tillage measure was more effective for N/P leaching control than deep ploughing-tillage. Furthermore, the deep ploughing with straw incorporation was more beneficial for reducing the loss risk of N/P leaching.

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徐嘉翼,隋世江,陈玥,张艳君,叶鑫,牛世伟.不同耕作措施对棕壤氮磷淋失的影响[J].东北农业科学,2022,47(6):53-58.

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  • 收稿日期:2020-03-01
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  • 在线发布日期: 2024-11-09
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