摘要
[目的]为保障大豆可持续生产提供依据。[方法]采用随机区组设计,研究了沼渣与化肥配合施用对大豆田土壤理化性质和土壤微生物的影响。[结果]与不施肥对照(C1)相比,施入沼渣肥3年后,土壤容重降低,总孔隙度、毛管孔隙度、非毛管孔隙度以及田间持水量提高,土壤碱解氮、速效磷、速效钾、有机质含量都明显增加。土壤微生物(真菌、细菌、放线菌)在不同大豆生育期规律不一。总的来说,开花期―结荚期表现活跃,在苗期和成熟期动态变化一致。[结论]沼渣与化肥配施可明显改善土壤理化性状,提高土壤微生物活性。
[ Objective ] The research aimed to provide the basis for the safeguard of the sustainable production of soybean. [ Method ] The effects of matching application of biogas residues and chemical fertilizers on soil physical and chemical properties and microorganism number were studied by randomized block design. [ Result ] After 3 years＇ planting, the application of biogas residues could improve total porosity, capillary interstice, non-capillary interstice, and field capacity, while soil bulk density declined. And available N, available P, available K, and organic matter content in soil were all obviously improved. Soil microorganism （fungi, bacteria and actinomycetes） number was different in different development period. Conclusively, they were active in flowering-bearing pod stage, while they showed the same changes in seedling- maturity stage. [ Conclusion] The soil physical and chemical properties of soybean soil and the microbial activity were improved significantly by the application of biogas residues and chemical fertilizers.
出处
《安徽农业科学》
CAS
2012年第13期7763-7765,共3页
Journal of Anhui Agricultural Sciences
基金
黑龙江省农业科学院创新工程资助项目"沼渣沼液安全性评价和肥效研究"(404017)
现代农业大豆产业技术体系CARS-04-PS05
关键词
沼渣
化肥
土壤特性
土壤微生物
Biogas residue
Chemical fertilizer
Soil properties
Soil microorganism
