Release Regulation Of NH₃ And CO₂ After Different Organic Materials Mixed With Nitrogen Fertilizer

In this paper,against the phenomenon of Chinese agricultural nitrogen fertilizer increased,but the usage is annual decline,Through test different types of organic materials,as well as the state of the application of inorganic fertilizers in the form of nitrate and extent of the impact of carbon dioxide emissions,summed up nitrate inhibit the release of carbon dioxide and effective way.Turn on the nitrogen organic materials to maintain the role and reduce greenhouse gas emissions and provide a theoretical basis,the achievement of better agricultural production and environmental protection.This experiment was divided into two parts,In the two parts,all of these organic materials to the following five experiments:1) Different types of organic materials and urea were mixed after a culture experiment.2) Different types of organic materials mixed with urea into the soil after application culture experiment.3) After 45 days of pre-decomposition of organic materials and different types of urea after mixed culture experiment.4) The same types of organic materials with urea,ammonium sulfate,ammonium nitrate mixed after culture experiment.5) Different way fertilization respectively urea,urea and organic materials mixed into the soil of Oxfam culture experiment.In the first part,though the five experimental treatments on the release of organic materials on the effects of nitrate.The results show that:Whether a simple training,training or application into the soil decomposition after training,deer dung,cow dung category of animal waste organic materials on the release of nitrate has been significantly inhibited,particularly in the culture of the late pilot Organic materials such inhibition on the outstanding performance of nitrate,which inhibited deer feces better than cow dung;straw,Bacillus subtilis and other herbaceous organic materials end of the trial also showed inhibition of the release of nitrate; Abandoned plant seeds only the initial stage of the trial have weak inhibition test to the end of its nitrogen emissions remained high level,which produced its own decomposition of nitrate will release relevant.In addition,the added moisture in the 50 days after the release nitrogen organic materials also shows an increase in water sufficient to promote organic materials will be the release of nitrogen.In the straw,deer dung,Yang leaves with urea,ammonium sulfate,ammonium chloride mixture test,we have come to such a conclusion:Straw represented by the organic materials and herb leaves as the representative Yang woody organic feed on the release of urea nitrate no obvious effect on its ammonium sulfate and ammonium chloride,nitrate in the release of relatively obvious,and to the representatives of deer feces for organic fertilizer,animal dung on urea the release of nitrate in a relatively obvious effect Different fertilization will affect the depth of inorganic fertilizer in the release of nitrate,fertilizer application of the surface soil conducive to the absorption of nitrogen,and the middle and deep fertilization relative to the control of volatile nitrate.Straw mixing urea after application into different soil depth and the results of urea simple application similar to the experimental results,regardless of the application of a simple mixture of inorganic materials or organic materials,appropriate deep application of fertilizer nitrogen gas to control the release of a very obvious role.In the second part,the five tests that deal with organic materials on the effects of the release of carbon dioxide.The results show that:pure culture,training and application into the soil decomposition training after three experimental treatment,the release of carbon dioxide is a better inhibition of organic fertilizer animal feces,including cow dung in the test medium-term controlled release relatively obvious,Deer feces and the long-term inhibition effect more visible,followed by the abandoned plant grain,and the beginning of the trial and medium-term performance of a certain inhibiting the release of carbon dioxide role in the entire process of herbaceous and woody organic material effect on the performance of carbon dioxide not obvious.The straw,Yang leaves,deer feces with urea,ammonium sulfate,ammonium chloride mixed after the release of carbon dioxide as follows:straw for the representatives of the three organic materials herbal compound inorganic carbon dioxide released no significant impact;represented by the leaves of woody organic fertilizer is ammonium chloride in the inhibition of carbon dioxide have relatively prominent role in deer feces representative of the animal dung for organic fertilizers in the pilot stage of inorganic carbon dioxide expected to have some effect.Whether in the single application of urea and urea or in the straw mixed circumstances,fertilization depth on the gaseous carbon emissions are not significantly impact on the release of carbon dioxide fertilization deep just below the surface and middle fertilization fertilization methods.