Study On Response Of Mid-micro Soil Animal To Fertilizer Inlfuence In Farmalnd Ecosystem

Soil animals are an important part of the ecological system,and their componentsand numbers change could obvious point out environment,and the main activities ofSoil animal can improve soil structure、soil physical properties and chemical properties.Recently years, there have been some reports about soil animal related research.But theresearch of characteristics of soil fauna community and their function role are focus onthe forest ecosystem, grassland ecosystem and wetland ecosystem. There are someresearches about different soil types in China. But nearly no report about the response ofsoil animals to different fertilization conditions in agro-ecosystem’s farming soil andnofarming soil.Harbin city is located in the east of the songnen plain, is one of theimportant commodity grain production basis. This passage compare to two types of soil,study by numbers, species, distributed in farmland and farmland forest under differentfertilizer treatments. Indicate that the relationship of soil animals and communityenvironment of different fertilizer or overfertilization. What’s more, it’s also designedto provide basic data for the investigation and research of the Harbin soil fauna andfertilization system and provide relevant material for the agriculture department.Through Three times investigation in May、July and September in2011, we selecttwo types of soil: cultivated soil farmland and non-cultivated soil farmland shelterbelts,carrying out different fertilization treatments on different land use types,for each landuse consists of nine processing samples and one pairs of plots, each plot to select foursample point.In this investigation we got38981individuals,125groups of mdi-micro soilanimals. attribute to3Phylums: Annelida、Mollusca、Arthropoda,5classes: Symphyla、Arachnida、Chiopoda、Insecta、Oligochaeta，15prders and54categories.We got8879individuals,39groups of soil animals in farmland. We got30102individuals,55groupsof soil animals in farmland forest. They have2kids of the same dominant groups,incluing Oribatida and Mesostigmta.They have5kids of the common groups, incluingProstigmata、Onychiuridae、Isotomidae、Paronellidae、Formicidae.The horizontal distribution characteristics：Under different fertilizer treatments,the number of individuals and groups of cropland soil animals: N>K>P. the number of individuals of farmland shelterbelts soil animals: K>P>N，and groups are adverseindividuals. Under the same fertilizer between different concentrations treatments, thenumber of individuals of cropland soil animals are decrease as follows the increasing offertilizer concentration,while groups are the rich in the lowest fertilizer concentration.the number of individuals of farmland shelterbelts soil animals are adversecropland,theris increae are following the concentration rise.The vertical distribution of survey results: the law of the conditions of differentfertilizer treatments, the two soils of farmland and farmland shelterbelts verticaldistribution of the number of individual animals in general table cohesion, decreasingwith depth, but the changes in the group number，and group number only K fertilizerprocessing conditions, farmland and farmland protection forest soil fauna number Thevertical distribution of the same,0-5>10-15>5-10. Under the conditions of the samefertilizer, soil the number of individual animals in the overall distribution of differentland use patterns are basically the same, that is0-5up to10-15layers at least;Time Dynamic findings: different fertilizers interference conditions of soil animals,farmland and farmland shelterbelts are two land use patterns in the number ofindividuals and groups of the overall change in the temporal dynamics of May> July>September. The same fertilizer treatment conditions, the soil fauna of the N-fertilizerand K fertilizer treatment consistent with the farmland shelterbelts soil the number ofindividual animals and groups of the number of changes in the law, namely May> July>September.The dynamic changes of soil environment: fertilization significantly increased thepH value of farmland soil, but little effect on the farmland shelterbelts. Organic mattercontent in farmland and farmland shelterbelts with higher levels in July. Farmlandfertilization treatment area in all sorts of total phosphorus content and total nitrogen arebasically the highest in September, while the available phosphorus content in Maymaximum; total potassium content is highest in September, while the potassium contentof September, when relatively small. Handling area of farmland shelterbelts fertilizationin all sorts of content of total nitrogen、total phosphorus and available phosphorus inJuly the highest; total potassium content is reduced over time, while the potassiumcontent of the whole7month of higher.The correlation analysis between soil animals in different land use patterns in the number of individuals and groups of changes in soil environmental factors and foundthat the number of individual animals and groups of the main factors affecting thedifferences in different months.Between the farmland ecosystem of soil animal communities, the overallperformance of the medium is similar to the individual performance of the highsimilarity.