湖北农业科学2025，Vol.64Issue(9)：21-26,6.DOI:10.14088/j.cnki.issn0439-8114.2025.09.005
秸秆与不同形态氮肥添加对水稻土氮素释放能力的影响
Effects of straw and different forms of nitrogen fertilizer addition on nitrogen release capacity of paddy soil
摘要
Abstract
Using indoor constant temperature culture,two groups of experiments with five nitrogen fertilizer treatments of F1(potassi-um nitrate),F2(ammonium chloride),F3(urea),F4(potassium nitrate∶ammonium chloride∶urea=1∶1∶2),and F0(no nitro-gen fertilizer)were set up.The first group was straw decomposition test to explore the effect of nitrogen on straw decomposition rate and straw nitrogen release rate.In the second group of experiments,five main treatments of exogenous nitrogen fertilizer were set up,as well as two sub-treatments of adding straw(SC)and not adding straw(CK),to explore the changes of readily oxidizable organic car-bon(ROC),ammonium nitrogen(NH4+-N)and nitrate nitrogen(NO3--N)in soil.The results showed that the addition of nitrogen fertilizer had no significant effect on straw decomposition,but could increase the nitrogen release rate of straw.The addition of nitrogen fertilizer had no significant effect on ROC content,and the addition of straw increased ROC content and made ROC more stable during the culture process.The addition of nitrogen fertilizer had no significant effect on soil NH4+-N content,and straw addition reduced soil NH4+-N content.The addition of potassium nitrate and no nitrogen fertilizer reduced the soil NO3--N content,and the addition of urea,ammonium chloride and straw combined with nitrogen fertilizer increased the soil NO3--N content.Overall,through the reason-able combination of nitrogen fertilizer and straw management measures,it was more conducive to the enrichment of soil nitrogen.关键词
氮肥/氮素释放能力/秸秆腐解/秸秆还田/水稻土Key words
nitrogen fertilizer/nitrogen release capacity/straw decomposition/straw return to the field/rice paddy soil分类
农业科技引用本文复制引用
严如玉,高旭园,甘国渝,李继福..秸秆与不同形态氮肥添加对水稻土氮素释放能力的影响[J].湖北农业科学,2025,64(9):21-26,6.基金项目
农业农村部作物需水与调控重点实验室项目(ZWS202302) （ZWS202302）
农业农村部农作物种植补贴项目(J2022015) （J2022015）
