Effect Of Combined Application Of Organic And Inorganic Fertilizers On Transformation Of Phosphorus In Soil

Continue simultaneous employing various different chemical fertilizer on thesis basis applying fertilizer in Jilin agricultural university experiment centre long range in 22,the organic material being allotted out 4 housing estate employing different source is animal excrement(deer excrement),the remaining grass family body(fallen leaf in autumn),the remaining body of plant with stiff trunks(maize straw stem),systematic the conversion studying soil is hit by the rapid available phosphorus and the inorganic various phosphorus and the entire phosphorus and inorganic various phosphorus migration,applying the theory basis on black soil research.The experiment sets up 4 housing estate together:The check plot,the deer manure area,leaf area,straw stem area,8 handle:CK,N,P,P,NP,NK,PK,NPK,the crop adopt maize cultivationThe experiment indicates the phosphorus conversion:Soil topsoil rapid available phosphorus contents changes amount are ordered under the situation of employing organic material for a short time:deer excrement＞leaf＞straw stem;Ca₂-P change amount is a deer excrement＞leaf> straw stem;Ca₈-P change amount is deer excrement＞leaf＞straw stem;Al-P change amount is deer excrement＞leaf＞straw stem;Fe-P change amount is leaf＞deer excrement＞straw stem;O-P and various Ca₁₀-P data difference are not notable. But,under the condition applying fertilizer,soil topsoil rapid available phosphorus change amount is ordered greatly:P＞PK＞NP = NPK;Ca₂-P change amount is P＞PK＞NP＞NPK;Ca₈-P change amount is P＞NP＞PK＞NPK;Al-P change amount is P＞PK＞NPK＞NP;Fe-P change amount is NPK＞PK＞P＞NP;The various O-P data difference with Ca₁₀-P is not notable.Under the situation that the organic material and chemical fertilizer match Shi,the rapid available phosphorus,Ca₂-P,Ca₈-P,Al-P change amount are that deer excrement + P handles a maximum,Fe-P is that leaf + NP handles the change amount maximum equally. The contents employing various organic material queen O-P contents and Ca₁₀-P come down,Ca₂-P,Ca₈-P, the Al-P contents increase.The organic fertilizer and chemical fertilizer be able to reduce Ca8-P contents, change to Ca₂-P,Al-P.The phosphate fertilizer is mainly translated into Ca₂-P,Ca₈-P,Al-P,Fe-P,after the mixed application of organic fertilizer and fertilizer,and these transformants can reduce the Ca₁₀-P proportion in which constituents of the soil significantly,and for the purpose of this kind of reducing,the deer manure is the best organic fertilizer,and the leaves is the second,the straw is the third.In addition to this,the mixed application of organic fertilizer and fertilizer also can reduce the O-P and Fe-P proportion in which constituents of the inorganic phosphorus,and for the purpose of this kind of reducing,the leaves is the best organic fertilizer,and the deer manure is the second,the straw is the third. Experiments show that the migration of phosphorus is that in the long term,deer manure and phosphorus combined application of the total phosphorus in the soil impact on migration,and straw and the combined application of phosphate fertilizer and phosphate fertilizer and leaves the Combined Application of the total phosphorus of the minimal impact of migration in the soil and various organic materials and the combined application of phosphate fertilizer phosphorus and inorganic phosphorus migration patterns are not obvious.The research of offect of oombined opplication of organic and Inorganic oertilizers indicates that different organic material and chemical fertilizer:Inorganic phosphorus accounts for entire 52%- 84%of phosphorus in organic material and the chemical fertilizer queen black soil employing different source,every inorganic component phosphorus accounts for 6.1%of inorganic phosphorus 53.1%11.8%(Ca2-P),6.2-12.1 %(Ca8-P),8.6-15.5%(Al-P),16.5-26.7%(Fe-P),1.3-2.3%(O-P),31.7%-(Ca10-P) respectively.Ca₂-P, Ca₈-P,Al-P and the Ca₁₀-P section contents arrive at 30-60cm section from 0-30cm section,section assumes obvious coming down again to 60-90cm trend;Fe-P comes down in 0-30cm section to 30-60cm section presentation format trend,But,30-60cm section arrives at 60-90cm section Increased performance;O-P has no obvious difference in contents ratios in every 0-90cm section,whose contents stabilize comparatively. 30-60cm contents section minima,0-30cm section content are a bit higher than 60-90cm section content.Every component and the rapid available phosphorus relevance analysis indicate that the rapid available phosphorus and Al-P and Ca₂-P correlativity are best,Ca8-P and Fe-P are a secondary,Ca₁₀-P and O-P correlativity are the worst,therefore,Ca₈-P and Fe-P are second effective phosphorus source of black soil. and Al-P and Ca₂-P are main effective phosphorus source of black soil..