干旱区生态环境知识资源中心(Arid): 地膜覆盖对旱作玉米农田土壤氮素矿化的影响

Arid

	地膜覆盖对旱作玉米农田土壤氮素矿化的影响
其他题名	Effect of plastic film mulching on soil nitrogen mineralization in rain-fed maize growing field
	刘小娥; 苏世平; 孟庆海; 杨娥女; 卢昊鹏
来源期刊	甘肃农业大学学报
ISSN	1003-4315
出版年	2019
卷号	54 期号:3 页码:40-46
中文摘要	【目的】研究地膜覆盖对半干旱区玉米地土壤氮素矿化的影响,为优化田间氮肥管理措施提供理论依据.【方法】采用大田试验和室内试验相结合的方法,在玉米生长发育最旺盛的时期,在田间取样测定土壤微生物量碳、氮和无机氮的含量,采用室内培养的方法测定土壤氮素的矿化量和矿化速率,对比地膜覆盖和裸地土壤氮素矿化的差异.【结果】覆膜不种玉米处理较覆膜种玉米处理显著的增加了土壤含水量和土壤温度;地膜覆盖和种植玉米均增加了土壤微生物量碳和微生物量氮的含量;地膜覆盖、种植玉米和培养时间对土壤氮素的净硝化量和净矿化量均有显著的影响,0~14d培养期间,覆膜处理(F和MF)较不覆膜处理(CK和M),土壤净矿化量分别增加了21.85%和44.75%,14~28d培养期间,分别增加了150.55%和194.99%;地膜覆盖和种植玉米显著增加了土壤氮素净矿化速率,从而增加了土壤无机氮的含量.【结论】地膜覆盖改善了土壤的水热条件,增加了土壤微生物活性,从而加快了土壤氮素的矿化速率,增加了土壤氮素的有效性;种植玉米增加了土壤氮素的矿化速率.
英文摘要	【Objective】The effects of plastic film mulch on soil nitrogen mineralization in rain-fed maize growing field were studied to provide the theoretical basis for optimizing field nitrogen fertilizer management.【Method】The combination of field experiment and laboratory test was used to measure the soil microbial biomass carbon,microbial biomass nitrogen and inorganic nitrogen in the field during the vigorous growth period of maize.The laboratory culture method was used to compare the difference in the mineralization rate of soil nitrogen between film mulching treatment and the control.【Result】Mulching without maize treatment significantly increased soil water content and soil temperature compared with mulching maize treatment;Film mulching and planting maize increased soil microbial biomass carbon and microbial biomass nitrogen content;Film mulch,planting maize and culture time had significant effects on the net nitrification and net mineralization of soil nitrogen.During 0~14 days of culture,the net nitrogen mineralization of the soil in mulching treatments(mulching without maize and mulching with maize)increased by 21.85%and 44.75%compared to no mulch treatments(CK and maize without mulching),respectively.During 14~28 days culture,they increased by 150.55% and 194.99% respectively.Film mulching and planting maize significantly increased the net mineralization rate of soil nitrogen,which increased the soil inorganic nitrogen content.【Conclusion】The film mulching improved the soil hydrothermal conditions and increased the soil microbial activity,which accelerated the mineralization rate of soil nitrogen and increased the availability of soil nitrogen.Planting maize increased the mineralization rate of soil nitrogen.
中文关键词	玉米 ; 地膜覆盖 ; 土壤氮素矿化 ; 农田土壤
英文关键词	maize plastic film mulching soil nitrogen mineralization farmland soil
语种	中文
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Agriculture
CSCD记录号	CSCD:6537574
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/316148
作者单位	甘肃农业大学林学院, 兰州, 甘肃 730070, 中国
推荐引用方式 GB/T 7714	刘小娥,苏世平,孟庆海,等. 地膜覆盖对旱作玉米农田土壤氮素矿化的影响[J],2019,54(3):40-46.
APA	刘小娥,苏世平,孟庆海,杨娥女,&卢昊鹏.(2019).地膜覆盖对旱作玉米农田土壤氮素矿化的影响.甘肃农业大学学报,54(3),40-46.
MLA	刘小娥,et al."地膜覆盖对旱作玉米农田土壤氮素矿化的影响".甘肃农业大学学报 54.3(2019):40-46.