植物营养与肥料学报2018，Vol.24Issue(2)：316-324,9.DOI:10.11674/zwyf.17185
秸秆还田方式与施氮量对春玉米产量及干物质和氮素积累、转运的影响
Effects of straw management and nitrogen application on spring maize yield,dry matter and nitrogen accumulation and transfer
摘要
Abstract
[Objectives] Nitrogen application and total straw incorporation affect spring maize yield,dry matter and nitrogen accumulation and transfer.The proper combination mode of N and straw returning was studied in this paper.[Methods] A two factors field experiment was conducted consecutively for two years in Tieling City,Liaoning Province.Two straw incorporation modes (rotary tillage and moldboard plow tillage) and five nitrogen application levels were designed.Spring maize yield,dry matter and nitrogen accumulation and transfer were analyzed.[Results] Compared with the moldboard plow tillage of straw incorporation,the dry matter,N accumulation were increased in the rotary tillage straw incorporation treatment,while there was no difference in the yield and grain nitrogen accumulation under the two straw incorporation treatments.The accumulation and contribution of dry matter and N to grain efficiency were increased in the rotary tillage straw incorporation treatment.The dry matter and N transfer,dry matter and N transfer efficiency were increased in the moldboard plow tillage straw incorporation treatment,and the contribution of dry matter and N transfer to grain efficiency pre-anthesis were 12.4％ and 44.1％.With the increase of N application rate,the yield,grain nitrogen accumulation,dry matter and N accumulation were increased.No significant increase in yield and grain nitrogen accumulation was found when the nitrogen application rate was higher than 262.5 kg/hm2.The highest dry matter and N transfer,dry matter and N transfer efficiency were obtained in the nitrogen application rate of 262.5 kg/hm2,and the contribution of dry matter and N transfer to grain efficiency were 16.7％ and 45.2％,respectively.[Conclusions] In this study,the two straw incorporation modes had similar yield and grain nitrogen accumulation,but the rotary tillage straw incorporation treatment could reduce the cost of soil tillage and greatly improve economic benefit,and the straw incorporation with nitrogen application rate of 262.5 kg/hm2 was the optimal mode.关键词
秸秆还田方式/施氮量/春玉米产量/干物质/氮素积累量Key words
straw incorporation/nitrogen application rate/spring maize yield/dry matter/nitrogen accumulation引用本文复制引用
隋鹏祥,齐华,有德宝,安俊朋,张文可,田平,梅楠,王美佳,王沣,苏思慧..秸秆还田方式与施氮量对春玉米产量及干物质和氮素积累、转运的影响[J].植物营养与肥料学报,2018,24(2):316-324,9.基金项目
国家重点研发计划项目(2016YFD0300103,2017YFD0201805,2016YFD0300801) （2016YFD0300103,2017YFD0201805,2016YFD0300801）
公益性行业(农业)科研专项经费项目(201503116)资助. （农业）
