Effects of N application methods on cotton yield and fertilizer N recovery efficiency in salinity fields with drip irrigation under mulch film using 15N tracing technique
文献类型： 外文期刊
作者： Luo, Zhen 1 ; Tang, Wei 1 ; Wang, Xiaowen 1 ; Lu, Hequan 1 ; Li, Chenyang 1 ; Liang, Jun 1 ; Kong, Xiangqiang 1 ;
作者机构： 1.Shandong Acad Agr Sci, Inst Ind Crops, Jinan, Shandong, Peoples R China
2.Shandong Normal Univ, Coll Life Sci, Jinan, Peoples R China
关键词： cotton; drip irrigation under mulch film; non-uniform salinity distribution; fertilizer N recovery efficiency; yield; GHNRT
期刊名称：FRONTIERS IN PLANT SCIENCE （ 影响因子：5.6； 五年影响因子：6.8 ）
ISSN： 1664-462X
年卷期： 2024 年 15 卷
页码：
收录情况： SCI
摘要： Introduction Drip irrigation under mulch film promotes a non-uniform salinity distribution in salt fields. The effect of different N application methods on the growth and yield of cotton under drip irrigation under mulch film conditions in eastern coastal saline-alkaline soils in China remain remained unclear. Methods A randomized complete block design was used in the experiment. Three N application methods were assigned: N applied under mulch film (low-salinity area; UM), N applied between mulch films (high-salinity area; BM), and half N applied under mulch film and half between mulch films (HUHB). Results Plant height, photosynthesis, Chl content, boll load, biomass, boll weight and boll density under UM were all significantly higher than those under the other two treatments. The N absorption of UM was higher than in the other two treatments, which might be attributed to the expression of GHNRT1.5 and GHNRT2.1. The net NO3- influx in the roots in UM increased significantly compared with that in BM. The yield and FNRE of UM were 3.9% and 9.1%, respectively, and were 26.52% and 90.36% higher than under HUHB and BM treatments. Discussion UM not only improved cotton yield but also alleviated the pollution of N residue on drip irrigation under mulch film conditions in salt areas.
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