中国农学通报2025，Vol.41Issue(25)：54-59,6.
旋耕方式下氮肥不同减施量对冬小麦根际土壤微生物及酶活的影响
Effects of Nitrogen Fertilizer Reduction Levels on Rhizosphere Soil Microorganisms and Enzyme Activities of Winter Wheat Under Rotary Tillage System
摘要
Abstract
In this paper,the effects of reduction levels of nitrogen fertilizer on rhizosphere soil microorganisms and soil enzyme activities were studied,so as to obtain rational application levels and improve resource use efficiency.Under rotary tillage methods,treatments of CK(over-application,300 kgN/hm2),RF10(N reduce 10%),RF20(N reduce 20%),and RF30(N reduce 30%)were set to conduct experiments in 2017 to 2018(the first season)and 2018 to 2019(the second season),respectively.The results showed that compared with CK,RF20 increased the yield,RF10 had a slight decrease in yield,but the difference was not significant.RF30 reduced the yield,with a significant reduction in the first season.The number of bacteria and fungi in the rhizosphere soil of RF20 decreased at the jointing and filling stages,and the number of fungi decreased significantly in the second season,by 21.50%and 20.63%respectively compared with the control.The number of actinomycetes in the rhizosphere soil of RF20 decreased significantly by 27.78%to 39.76%at the filling stage.The number of bacteria and fungi in the rhizosphere soil of RF10 increased at the filling stage,while that of RF30 decreased.The effect of RF10 and RF30 on actinomycetes was irregular.In addition,at the jointing and tillering stage,the urease activity in the rhizosphere soil of RF20 decreased,and the sucrase and urease activities in the rhizosphere soil of RF10 both decreased.At the filling stage,the sucrase activity in the rhizosphere soil of RF20 and the urease activity in the rhizosphere soil of RF30 both increased.In conclusion,under the nitrogen application rate of 300 kgN/hm2,reducing the nitrogen supply by 10%and 20%in the wheat season improved the soil microbial quantity and soil enzyme activity,saved fertilizer input,and achieved stable yield and increased efficiency.关键词
旋耕/氮肥不同减施水平/冬小麦季/土壤微生物/土壤酶Key words
rotary tillage/reduction levels of nitrogen fertilizer/winter wheat growing season/soil microorganisms/soil enzyme分类
农业科技引用本文复制引用
聂胜委,张巧萍,王建超,潘秀燕,王辉,李金平..旋耕方式下氮肥不同减施量对冬小麦根际土壤微生物及酶活的影响[J].中国农学通报,2025,41(25):54-59,6.基金项目
河南省肉牛产业技术体系建设专项"农业废弃物资源化利用技术研究与示范"(HARS-22-13-G02) （HARS-22-13-G02）
国家重点研发专项"化肥农药协同增效技术与评价"(2017YFD0201702). （2017YFD0201702）
