施肥对旱作盐碱地线虫群落与燕麦产量的影响
S344.2; 本研究以线虫作为指示生物,探索不同肥料长期施用对旱作盐碱瘠薄土壤微食物网的影响.依托5年定位试验,设置单施醋糟(VR)、有机肥(OM)、菌肥(BM)、化肥(CF)及醋糟/粉煤灰配施(VRF)和有机肥/化肥配施(OCF)、不施肥(CK)7个处理,选取燕麦苗期、抽穗期和收获期的耕层土壤样品,分析土壤线虫群落、土壤性状及燕麦产量.结果表明:大部分施肥处理降低了土壤pH和容重,显著提升了有机质、硝态氮含量以及微生物数量(P＜0.05).除BM外,各施肥处理的燕麦均显著增产(P＜0.05),增幅为44.5％～92.3％,其中OM和CF显著高于其他施肥处理(P＜0.05).施肥显著提高了土...
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| Published in | 中国生态农业学报（中英文） Vol. 32; no. 1; pp. 153 - 163 |
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| Main Authors | , , , , , , , |
| Format | Journal Article |
| Language | Chinese |
| Published |
山西农业大学农学院 晋中 030801%白城市农业科学院 白城 137000
2024
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| Subjects | |
| Online Access | Get full text |
| ISSN | 2096-6237 |
| DOI | 10.12357/cjea.20230376 |
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| Abstract | S344.2; 本研究以线虫作为指示生物,探索不同肥料长期施用对旱作盐碱瘠薄土壤微食物网的影响.依托5年定位试验,设置单施醋糟(VR)、有机肥(OM)、菌肥(BM)、化肥(CF)及醋糟/粉煤灰配施(VRF)和有机肥/化肥配施(OCF)、不施肥(CK)7个处理,选取燕麦苗期、抽穗期和收获期的耕层土壤样品,分析土壤线虫群落、土壤性状及燕麦产量.结果表明:大部分施肥处理降低了土壤pH和容重,显著提升了有机质、硝态氮含量以及微生物数量(P＜0.05).除BM外,各施肥处理的燕麦均显著增产(P＜0.05),增幅为44.5％～92.3％,其中OM和CF显著高于其他施肥处理(P＜0.05).施肥显著提高了土壤线虫的数量和丰富度(P＜0.05),OM处理线虫群落达到结构化状态,食物网稳定,但植物寄生线虫占比较高(36.2％);相比其他肥料,CF处理则会显著增加线虫优势属数量,显著降低线虫多样性(P＜0.05);而两者配施的OCF一定程度上弥补了各自的不足.VRF和VR处理均显著提高了食微线虫占比(P＜0.05),降低了植物寄生性线虫占比,VRF处理自由生活线虫成熟度指数显著最高(P＜0.05).土壤有机质、有效磷和微生物是土壤线虫数量变化的主要因素,土壤pH、EC、容重是燕麦增产的主要限制因素,而土壤线虫数量与燕麦产量无显著相关.有机肥/化肥和醋糟/粉煤灰配施较肥料单施更利于土壤微生态环境的健康稳定. |
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| AbstractList | S344.2; 本研究以线虫作为指示生物,探索不同肥料长期施用对旱作盐碱瘠薄土壤微食物网的影响.依托5年定位试验,设置单施醋糟(VR)、有机肥(OM)、菌肥(BM)、化肥(CF)及醋糟/粉煤灰配施(VRF)和有机肥/化肥配施(OCF)、不施肥(CK)7个处理,选取燕麦苗期、抽穗期和收获期的耕层土壤样品,分析土壤线虫群落、土壤性状及燕麦产量.结果表明:大部分施肥处理降低了土壤pH和容重,显著提升了有机质、硝态氮含量以及微生物数量(P＜0.05).除BM外,各施肥处理的燕麦均显著增产(P＜0.05),增幅为44.5％～92.3％,其中OM和CF显著高于其他施肥处理(P＜0.05).施肥显著提高了土壤线虫的数量和丰富度(P＜0.05),OM处理线虫群落达到结构化状态,食物网稳定,但植物寄生线虫占比较高(36.2％);相比其他肥料,CF处理则会显著增加线虫优势属数量,显著降低线虫多样性(P＜0.05);而两者配施的OCF一定程度上弥补了各自的不足.VRF和VR处理均显著提高了食微线虫占比(P＜0.05),降低了植物寄生性线虫占比,VRF处理自由生活线虫成熟度指数显著最高(P＜0.05).土壤有机质、有效磷和微生物是土壤线虫数量变化的主要因素,土壤pH、EC、容重是燕麦增产的主要限制因素,而土壤线虫数量与燕麦产量无显著相关.有机肥/化肥和醋糟/粉煤灰配施较肥料单施更利于土壤微生态环境的健康稳定. |
| Abstract_FL | Utilizing saline-alkali land is of great significance for enhancing cultivated land quality.Nematodes are fauna critical to the soil food web that are morphologically and functionally diverse and widely used to indicate soil quality.However,the ecological in-dicator function of the nematode community on oat saline-alkali land,particularly the application of industrial waste on saline-alkali land,has less been reported.In this study,soil nematodes were investigated as an indicator of the soil ecological environment to ex-plore the effects of the long-term application of different fertilizers on the micro-food web of saline-alkali barren soil under dry farm-ing.Based on a 5-year experiment,seven treatments were set:combined application of vinegar residue and fly ash(VRF),vinegar residue application(VR),organic manure application(OM),bacterial manure application(BM),combined application of organic ma-nure and chemical fertilizer(OCF),chemical fertilizer application(CF),and no fertilization(CK).Soil samples were collected from the plow layer at the seedling,heading,and harvesting stages of oats,and the soil nematode community,soil traits,and oat productiv-ity under long-term application of different fertilizers were analyzed.The results showed that most fertilizer treatments reduced soil pH and bulk density and significantly increased contents of organic matter,nitrate nitrogen,and microbial quantity(bacteria,fungi,and actinomycetes).With the exception of BM,the yield of oats increased significantly by 44.5％-92.3％under other treatments,and OM and CF had the highest oat yield(P＜0.05).The total number of soil nematodes significantly increased due to fertilization;OM was highest at the seedling and heading stages,and VR was highest at the harvesting stage(P＜0.05).The enrichment index(EI)of each treatment and the structure index(SI)of most treatments were lower than 50,indicating that the soil nutrients were poor and the soil food web was in a stressed or degraded state in this experimental field.Although the nematode community under OM application reached a structured state at harvesting stage(SI＞50),the food web was relatively stable,and the proportion of plant-parasitic nemat-odes was higher(36.2％).Compared to other fertilizers,the number of dominant species was significantly increased,and the nemat-ode diversity was the lowest(P＜0.05)under CF treatment.The combination of OM and CF(OCF)compensated for these shortcom-ings to some extent.VRF and VR significantly increased the proportion of microbial-feeding nematodes and decreased the proportion of plant-feeding nematodes.The Wasilewska index(WI)under the VRF and VR treatments was higher than that of CK during the three growth periods;and the maturity index(MI)of free-living nematodes under the VRF treatment was always the highest(P＜0.05),which indicated that organic carbon mineralization was dominated by microbial-feeding nematodes under the VRF and VR treat-ments and that the food web was mature and stable with less disturbance under the VRF treatment.Soil organic matter,available P,and microorganisms were the main factors affecting the number of soil nematodes.Soil pH,EC,and bulk density were the main limit-ing factors for oat yield,but there was no significant correlation between the number of nematodes and oat yield,but β-glucan con-tent was negatively correlated with the number of plant parasitic nematodes(r=-0.52*).The combined application of organic manure/chemical fertilizer and vinegar residue/fly ash was beneficial to the health and stability of the soil microecological environ-ment. |
| Author | 郭来春 赵璐明 高铎 乔月静 张礼静 范雅琦 李青山 霍瑞轩 |
| AuthorAffiliation | 山西农业大学农学院 晋中 030801%白城市农业科学院 白城 137000 |
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| Author_FL | FAN Yaqi ZHANG Lijing ZHAO Luming GUO Laichun HUO Ruixuan GAO Duo LI Qingshan QIAO Yuejing |
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| Author_xml | – sequence: 1 fullname: 乔月静 – sequence: 2 fullname: 霍瑞轩 – sequence: 3 fullname: 赵璐明 – sequence: 4 fullname: 李青山 – sequence: 5 fullname: 范雅琦 – sequence: 6 fullname: 高铎 – sequence: 7 fullname: 张礼静 – sequence: 8 fullname: 郭来春 |
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| Keywords | Long-term fertilization Fertilizer type 盐碱地 肥料类型 土壤理化性状 Oat Soil nematode 土壤线虫 Saline-alkali field Soil physical-chemical properties 长期施肥 燕麦 |
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| Title | 施肥对旱作盐碱地线虫群落与燕麦产量的影响 |
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