不同施肥方式对玉米产量和温室气体排放的影响

Influence of Different Fertilization Modes to Corn Production and Greenhouse Gas Emissions

探讨了旱地玉米常规施肥与调控施肥对产量和温室气体排放的影响和差异。结果表明,整个观察期雨养旱地春玉米农田土壤N2O和CO2表现为净排放,而CH4呈现净吸收的特征;N2O的排放主要集中在施基肥后1个月,占整个季节排放总量的70%以上;2种施肥模式下的N2O排放有明显的差异,与常规施肥相比,调控施肥的N2O排放总量降低70.3%,但是对CH4和CO2排放量的影响均不显著;调控施肥的玉米生产碳强度显著降低了73.91%,而产量显著增加。

This paper discusses the influence and difference between dryland corn of conventional and control fertilizations bio-charcoal in production and greenhouse gas emissions,the results show that soil N2O and CO2 from field is a net emissions from field in the entire observation period,and CH4 is a net absorption.N2O emissions are mainly in one month after the base manure,accounting for more than 70% of the total emissions of the entire season.The emissions of N2O are significantly different between the two fertilization modes,Compared with the conventional fertilization,the total N2O emissions of the application of the regulation fertilization decreased by 70.3%,but it shows no significant influence on CH4 and CO2 emissions.The carbon intensity of corn production of the regulation of fertilization was significantly reduced by 73.91%,while production increased significantly.