不同微生物菌剂对盐碱地土壤和水稻产量的影响OA
Effects of Different Microbial Agents on Soil Properties and Rice Yield in Saline-alkali Land
[目的]探明不同微生物菌剂对盐碱地土壤和水稻产量的影响,为研发耐盐微生物肥料优质产品提供资源支撑.[方法]采用随机区组试验设计,以常规施肥减施 30%化肥(CK1)和常规施肥(CK2)为对照,研究常规施肥+篮状菌颗粒 5 kg/hm2(T)和常规施肥+复合微生物颗粒 5 kg/hm2(F)处理对水稻产量、土壤理化性质、关键酶活性及功能微生物有效活菌数的影响,并构建分段结构方程模型,定量解析不同施肥处理影响水稻产量的多重作用路径.[结果]水稻产量,配施微生物肥料对水稻分蘖能力具有明显正向调控作用,可通过提高水稻穴茎数与有效穗数实现增产,与 CK1、CK2 比,T和 F水稻实际产量分别提升20.63%、4.67%和 29.25%、12.15%.土壤理化性质,与 CK2 相比,T土壤速效磷含量、可溶性 Ca2+含量、蔗糖酶活性和有效活菌数分别提高 12.84%、5.69%、18.91%和 166.87%;F土壤可溶性 Ca2+含量、可溶性 Mg2+含量、蔗糖酶活性和有效活菌数分别提高 14.42%、4.79%、8.13%和 571.68%.同时,T和 F可明显改善土壤盐碱性状,全盐含量分别降低 9.77%和 10.50%,pH分别降低 2.02%和 3.57%,电导率分别显著降低 11.36%和 18.51%.相关性分析与分段结构方程模型结果表明,配施微生物菌剂对水稻产量提升的正向总效应最高(0.59),其调控路径主要通过改善土壤速效磷供给、提高功能微生物有效活菌数和降低土壤全盐含量,从而促进水稻产量提升.[结论]篮状菌颗粒与复合微生物颗粒两类功能菌剂,主要通过改善土壤速效磷供给、提高功能微生物有效活菌数和降低土壤全盐含量来促进水稻产量提升,在盐碱地水稻栽培与土壤改良中均表现出良好应用潜力.
[Objective]The effects of different microbial agents on soil properties and rice yield in saline-alkali land were investigated to provide a resource support for developing high-quality salt-tolerant microbial fertilizers.[Method]The effects of conventional fertilization+5 kg/hm2 talaromyces granules(T)and conventional fertilization+5 kg/hm2 compound microbial granules(F)on rice yield,soil physicochemical properties,activity of key enzymes and effective viable count of functional microbes were studied by using a randomized block design and taking the conventional fertilization+30%reduction of chemical fertilizer(CK1)and conventional fertilization(CK2)as controls.The multiple action pathways affecting rice yield under different fertilization treatments were quantitatively analyzed by the constructed segmented structural equation model.[Result]Applying microbial fertilizer had a significant positive regulatory effect on rice tillering ability,and improved rice yield by increasing the stems per hole and effective panicles.Compared with CK1 and CK2,the actual rice yield of T and F treatments increased by 20.63%and 4.67%,and 29.25%and 12.15%,respectively.Compared with CK2,the available phosphorus content,soluble Ca2+content,sucrase activity and effective viable bacteria count in soil of T treatment increased by 12.84%,5.69%,18.91%and 166.87%,respectively.The soluble Ca2+content,soluble Mg2+content,sucrase activity and effective viable bacteria count in soil of F treatment increased by 14.42%,4.79%,8.13%and 571.68%compared with CK2,respectively.Total salt content,pH and conductivity of T and F treatments decreased by 9.77%and 10.50%,2.02%and 3.57%,and 11.36%and 18.51%compared with CK2,respectively,indicating that they can obviously improve saline-alkali soil conditions.The results from correlation analysis and the segmented structural equation model showed that applying microbial agents had the highest total positive effect(0.59)on rice yield,and its regulatory pathways mainly promoted rice yield increase by improving soil available phosphorus supply,increasing effective viable bacteria count of functional microbes and reducing total salt content in soil.[Conclusion]Talaromyces granules and compound microbial granules mainly promote rice yield increase by improving soil available phosphorus supply,increasing effective viable bacteria count of functional microbes and reducing total salt content in soil.Both bacterial agents show good application potential in rice cultivation and soil improvement in saline-alkali land.
王向向;殷博;孟利强;吴皓琼;张婷玉;范恩越;姜超;曹旭;商亮;张建伟
黑龙江省科学院 微生物研究所,黑龙江 哈尔滨 150000黑龙江省科学院 微生物研究所,黑龙江 哈尔滨 150000黑龙江省科学院 微生物研究所,黑龙江 哈尔滨 150000黑龙江省科学院 微生物研究所,黑龙江 哈尔滨 150000黑龙江省科学院 微生物研究所,黑龙江 哈尔滨 150000黑龙江省科学院 微生物研究所,黑龙江 哈尔滨 150000黑龙江省科学院 微生物研究所,黑龙江 哈尔滨 150000黑龙江省科学院 微生物研究所,黑龙江 哈尔滨 150000黑龙江省科学院 微生物研究所,黑龙江 哈尔滨 150000黑龙江省科学院 微生物研究所,黑龙江 哈尔滨 150000
农业科技
水稻土壤微生物菌剂篮状菌复合微生物颗粒分段结构方程模型盐碱地
ricesoilmicrobial agenttalaromycescompound microbial granulesegmented structural equation modelsaline-alkali land
《贵州农业科学》 2026 (9)
32-40,9
黑龙江省科学院重大攻关项目(ZDGG2024SW02)
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