不同施肥处理对旱作免耕土壤养分、微生物量及燕麦产量的影响
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S512.6

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现代农业产业技术体系资金资助(CARS-07);内蒙古科技计划项目(201501037)


Effects of Different Fertilization Treatments on Soil Nutrients, Microbial Biomass and Oat Yield in Dry Farming and No-tillage Field
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    摘要:

    以旱作免耕条件下燕麦田为研究对象,设置了不施肥(CK)、单施氮肥(N)、单施磷肥(P)、单施钾肥(K)、氮磷肥配施(NP)和氮磷钾肥配施(NPK)6个处理,研究其对旱作免耕土壤养分、微生物量及燕麦产量的影响。结果表明:施肥处理可以在不同程度上提高旱作免耕燕麦田的土壤有机质、全量养分和速效养分含量;不同施肥处理土壤微生物量碳、氮、磷在燕麦生育期内呈先增加后降低的趋势,土壤微生物量碳和氮高低顺序均表现为氮磷钾肥配施>氮磷肥配施>单施氮肥>单施磷肥>单施钾肥>不施肥,土壤微生物量磷高低顺序表现为氮磷钾肥配施>氮磷肥配施>单施磷肥>单施氮肥>单施钾肥>不施肥,其中氮磷钾肥配施和氮磷肥配施处理土壤微生物量碳、氮、磷与不施肥处理差异均达到显著水平;不同施肥处理产量表现为氮磷钾肥配施>氮磷肥配施>单施氮肥>单施磷肥>单施钾肥>不施肥,除单施磷肥和单施钾肥处理外,其他处理均与不施肥处理显著差异,其中氮磷钾肥配施处理产量最高,为2 238.25 kg/hm2,较对照增产24.3%。

    Abstract:

    Taking the dry farming and no-tillage oat field as the research object, six treatments: no fertilization(CK),single nitrogen application(N), single application of phosphate fertilizer(P), single application of potassium fertilizer(K), combined application of nitrogen, phosphorus and potassium(NP), and combined application of nitrogen, phosphorus and potassium(NPK) were set up. Effects of different fertilization treatments on soil nutrients, microbial biomass and oat yield in dry farming and no-tillage field was studied. The results showed that fertilization treatments could increase the soil organic matter, total nutrient and available nutrient content in dry farming and no-tillage oat fields to varying degrees. Soil microbial biomass carbon, nitrogen, and phosphorus in different fertilization treatments increased first and then decreased during the oat growing period, the order of soil microbial biomass carbon and nitrogen was as follows: NPK>NP>N>P>K>CK, the order of soil microbial biomass phosphorus level is as follows: NPK>NP>P>N>K>CK, and among them, the difference in soil microbial biomass carbon, nitrogen and phosphorus between the NPK and NP and CK reached significant levels. The yield performance of different fertilization treatments was NPK>NP>N>P>K>CK. Except for P and K, the other treatments were significantly different from the CK treatment. Among them, NPK had the highest yield, which was 2 238.25 kg/ha, and which is 24.3% higher than the control.

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鲁富宽,王润莲,刘慧军,赵宝平,刘景辉,武俊英.不同施肥处理对旱作免耕土壤养分、微生物量及燕麦产量的影响[J].东北农业科学,2021,46(5):26-30.

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  • 收稿日期:2020-07-23
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  • 在线发布日期: 2024-11-26
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