Impacts Of Organic And Inorganic Fertilizer On Greenhouse Gas Emissions And Yield Of Wheat-Corn System Rotation System

In this experiment,taking conventional fertilization mode(T2:100%nitrogen+0%rapeseed)in wheat maize system as the control,we set the different fertilization treatments,including T1:contral(no fertilizer),T2:100%chemical nitrogen fertilizer+0%rapeseed meal,T3:0%chemical fertilizer + 100%rapeseed meal,T4:50%chemical nitrogen fertilizer + 50%rapeseed meal,T5:33%chemical fertilizer + 67%rapeseed meal,T6:67%chemical fertilizer + 33%rapeseed meal as well.Discussion on rapeseed straw and chemical fertilizer combined effects of nitrogen application on wheat,corn field greenhouse gas emissions and grain yield,grain quality and energy-saving emission reduction and control of agricultural sources of air pollution,reduce greenhouse effect supporting fertilization measures.The conclusions of the study were as follows:(1)The wheat growth season T5 treatment with T2 and T3 treatment compared to significantly reduce N2O emissions and T4,T6 processing of N2O emissions and T2 and T3 treatments compared to the difference did not reach a significant,with fertilization T5 treatment most conducive to reducing the total emissions of N2O in winter wheat field.The difference of N2O emissions between treatments in maize growing season did not reach a significant level,and the total amount of N2O emission from maize field was not increased compared with conventional fertilization.Winter wheat and summer maize in different fertilization treatment of N2O emissions were not affected by soil moisture,and winter wheat and maize season due to the different growth stage of the season and soil temperature showed a distinct correlation between them.This is mainly because the soil temperature in the season of Winter Wheat with the passage of time gradually increased and decreased soil temperature in maize season.(2)In wheat season T2 treatment of CO2 emissions minimum,and other treatments compared difference reached significant level,T3 treatment the total CO2 emissions of highest and T2 treatment showed a very significant difference,indicating that only applying organic fertilizer and conventional fertilizer application significantly increased wheat field CO2 emissions compared to.And T3 treatment compared with the fertilization treatment of total CO2 emissions were less than in the treatment of T3,T6 treatment with T3 treatment there was a significant difference.The results show that a certain proportion of mixed with nitrogen fertilizer and pure application of organic fertilizer can significantly reduce wheat field CO2 emissions compared.The total amount of CO2 emission in maize season was higher than that in the blank treatment,but there was no significant difference between treatments.The results showed that the total amount of CO2 emission in maize field was not increased compared with conventional fertilization.(3)In wheat season T5 processing CH4 uptake and the highest in the treatment of T3 exist significant differences,and T1,T2 treatment had no significant difference,results show that certain proportion with conventional fertilization can increase wheat field total CH4 emission,and pure organic fertilizer compared can significantly increase the wheat field of the CH4 absorption capacity.With the same wheat season,season maize treatments showed the CH4 absorption,T5 absorption maximum,T6 treatment absorption minimum amount and the difference is significant,but with T2 treatment differences did not reach significant level.The results showed that compared with conventional fertilization,the results showed that the total amount of CH4 emission in maize field was not increased,but also the effect of different proportion of fertilizer application on CH4 in the field was not the same.(4)Compared with traditional fertilization,the pure application of organic fertilizer could increase the greenhouse effect of greenhouse gas in wheat season,and the ratio of the different proportion of fertilizer and fertilizer could not increase the greenhouse gas greenhouse effect.Compared with the conventional fertilization,the distribution of the greenhouse gases in maize is not increased.The results of field experiment showed that the increase of temperature and potential of greenhouse gas in wheat maize rotation mode could be increased by the application of organic manure.(5)The experimental results show that fertilizer and pure chemical fertilizer compared to safeguard wheat yield and quality;fertilization with T4,T6 processing can of corn yield,also on grain quality did not affect.Total yield of wheat and maize showed that the yield of wheat maize rotation mode could be guaranteed by the application of fertilization and traditional fertilization.The experimental results show that the combined application of organic fertilizer to ensure wheat,maize grain yield and quality at the same time to reduce the three major greenhouse gases(N2O,CH4 and CO2)emissions,and will not increase greenhouse gas warming potential.