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浅层淹水条件下不同施肥处理对黑土温室气体排放的影响
郎漫, 李平, 李淼, 魏玮, 李凯凯, 钱泳其, 黄静文
中国环境科学 ›› 2019, Vol. 39 ›› Issue (6) : 2506-2513.
PDF(440 KB)
PDF(440 KB)
浅层淹水条件下不同施肥处理对黑土温室气体排放的影响
Effects of different fertilization treatments on greenhouse gas emissions from black soil under shallow flooding condition
以东北黑土区长期耕作土壤为对象，通过室内培养试验研究了浅层淹水条件下不同施肥处理对黑土温室气体排放的影响.结果表明，浅层淹水条件下，与不施肥对照处理相比，单施氮肥处理对土壤CO2排放没有显著影响，氮肥配施猪粪或者秸秆则显著促进了CO2的排放，使得CO2排放速率提高了一个数量级，氮肥配施秸秆处理的CO2排放量最高.浅层淹水条件下，与不施肥对照处理相比，施用氮肥显著促进了土壤N2O的排放.而与单施氮肥处理相比，氮肥配施猪粪和秸秆则显著抑制了N2O的排放，表现为土壤对N2O的微量吸收，氮肥配施秸秆处理的N2O吸收量相对较高.浅层淹水条件下施用氮肥抑制了土壤CH4的排放，而与单施氮肥处理相比，氮肥配施猪粪或者秸秆则促进了土壤CH4的排放.
An incubation experiment was conducted under shallow flooding condition to study the effects of different fertilization treatments on greenhouse gas emissions from black soil. The results showed that application of N fertilizer exert no effect on CO2 emission compared with the non-fertilizer control treatment under shallow flooding condition, while combined application of N fertilizer with straw or pig manure increased CO2 emission to one magnitude that of solely application of N fertilizer, with the effect of treatment of N fertilizer with straw was more prominent. In comparison with the non-fertilizer control treatment under shallow flooding condition, application of N fertilizer significantly promoted the emission of N2O, however, combined application of N fertilizer with pig manure or straw significantly inhibited N2O emission and promoted slightly absorption of N2O compared with the treatment of solely application of N fertilizer, with the effect of the treatment of N fertilizer with straw was more remarkable. Application of N fertilizer inhibited CH4 emission under shallow flooding condition compared with the non-fertilizer control treatment, while combined application of N fertilizer with pig manure or straw significantly increased the emission of CH4 in comparison with the sole N fertilizer treatment.
black soil / fertilizer application / flooding condition / greenhouse gas / organic material
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