中国农业科学Issue(5)：911-920,10.DOI:10.3864/j.issn.0578-1752.2015.05.09
不同施肥方式对紫色土农田土壤动物主要类群的影响
Effect of Different Fertilization Regimes on the Main Groups of Soil Fauna in Cropland of Purple Soil
摘要
Abstract
[Objective]Management of cropland, especially long-term fertilization, can change the species and quantity of plant residue and root exudates, which will affect the soil fauna community composition. To investigate the effect of different fertilization regimes on the main groups of soil fauna, the response of main groups of soil fauna to changes of soil fertility and the relationships between main groups of soil fauna and soil properties were studied in the cropland of purple soil.[Method]Taking the Yanting Agro-ecological Experimental Station of Purple Soil, Chinese Academy of Sciences as a research area, modified Tuggren, Baermann and hand-sorting methods were used to investigate the main groups of soil fauna (nematode, earthworm and oribatida) in different long-time fertilization croplands. Correlation analysis, multiple regression analysis and canonical correlation analysis were used to clarify the relationships between the main groups of soil fauna and soil fertility variables. The long-term fertilization experiment was conducted with a no fertilizer control (CK) and five fertilization regimes: NPK (synthetic fertilizer: nitrogen, phosphorus and potassium), OM (pig manure), OMNPK (pig manure plus nitrogen, phosphorus and potassium), RSD (crop residues returned) and RSDNPK (crop residues returned with nitrogen, phosphorus and potassium).[Result]The number of individuals of nematode, earthworm and oribatida in the OMNPK and RSDNPK treatments were significantly higher than in the NPK treatment (P<0.05). The highest number of total individuals of the three main soil fauna was found in the RSDNPK, and was significantly higher than in the other fertilization regimes (P<0.05). Statistical analysis showed that soil organic matter (SOM), soil microbial biomass carbon (MBC) and nitrogen (MBN) and available potassium (AK) were significantly correlated to the individuals of soil nematode, earthworm and oribatida (P<0.05). The soil fertility properties were well explained by the individuals of soil nematode, earthworm and oribatida, with the explained percent of 78.03%,80.82% and 50.86%, respectively. Thus, the individuals of soil nematode, earthworm and oribatida can be applied to indicate certain characteristics of soil fertility.[Conclusion]The application of organic fertilizers promoted the number of individuals of nematode, earthworm and oribatida due to the abundant organic matter the fertilizers supplied for the survival and development of soil fauna. Organic-inorganic compound fertilizers were beneficial to the total individuals of the three main soil fauna, especially in the RSDNPK regime. The individuals of soil nematode, earthworm and oribatida can be used for indicating certain characteristics of soil fertility such as soil organic matter content. However, they cannot be used to quantify the integrated characteristics of soil fertility.关键词
土壤线虫/蚯蚓/甲螨/施肥方式/紫色土Key words
nematode/earthworm/oribatida/fertilization regimes/purple soil引用本文复制引用
朱新玉,朱波..不同施肥方式对紫色土农田土壤动物主要类群的影响[J].中国农业科学,2015,(5):911-920,10.基金项目
国家重点基础研究发展计划（2012CB417101）、教育部人文社会科学研究青年基金（13YJCZH283）、国家科技支撑计划 （）
