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Integrated rice management simultaneously improves rice yield and nitrogen use efficiency in various paddy fields

文献类型： 外文期刊

作者： Dong, Yujiao 1 ; Zeng, Fanwen 3 ; Yuan, Jiang 2 ; Zhang, Guangbin 4 ; Chen, Yuanxue 5 ; Liu, Xuejun 1 ; Hilario, Padilla 6 ; Ren, Tusheng 1 ; Lu, Shihua 2 ;

作者机构： 1.China Agr Univ, Coll Resources & Environm Sci, Beijing 100193, Peoples R China

2.Sichuan Acad Agr Sci, Soil & Fertilizer Inst, Chengdu 610066, Peoples R China

3.Bur Agr Shehong Cty, Suining City 629200, Sichuan, Peoples R China

4.Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Nanjing 210008, Peoples R China

5.Sichuan Agr Univ, Wenjiang 611130, Peoples R China

6.Kadoorie Farm & Bot Garden, Hong Kong 999077, Peoples R China

关键词： grain yield; hilly area; nitrogen uptake; paddy field type; plastic mulch; traditional rice management

期刊名称：PEDOSPHERE （ 影响因子：3.911； 五年影响因子：4.814 ）

ISSN： 1002-0160

年卷期： 2020 年 30 卷 6 期

页码：

收录情况： SCI

摘要： The hilly area of Southwest China is a typical rice production area which is limited by seasonal droughts and low temperature in the early rice growth period. A field experiment was conducted on three typical paddy fields (low-lying paddy field, medium-elevation paddy field, and upland paddy field) in this region. Nitrogen (N) treatment (180 kg N ha(-1) year(-1)) was compared to a control treatment (0 kg N ha(-1) year(-1)) to evaluate the effects of integrated rice management (IRM) on rice growth, grain yield, and N utilization. Integrated rice management integrated raised beds containing plastic mulch, furrow irrigation, and triangular transplanting. In comparison to traditional rice management (TRM), IRM promoted rice tiller development, with 7-13 more tillers per cluster at the maximum tillering stage and 1-6 more tillers per cluster at the end of tillering stage. Integrated rice management significantly increased the rice aboveground biomass by 34.4%-109.0% in different growth periods and the aboveground N uptake by 25.3%-159.0%. Number of productive tillers significantly increased by 33.0%, resulting in a 33.0% increase in grain yield and 8.0% improvement of N use efficiency (NUE). Grain yields were significantly increased in all three paddy fields assessed, with IRM being the most important factor for grain yield and productive tiller development. Effects of paddy field type and N level on N uptake by aboveground plants were reflected in the rice reproductive growth period, with the effects of IRM more striking due to the dry climate conditions. In conclusion, IRM simultaneously improved rice yield and NUE, presenting a valuable rice management technique in the paddy fields assessed.

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[1]Integrated rice management simultaneously improves rice yield and nitrogen use efficiency in various paddy fields. Dong, Yujiao,Liu, Xuejun,Ren, Tusheng,Dong, Yujiao,Yuan, Jiang,Lu, Shihua,Zeng, Fanwen,Zhang, Guangbin,Chen, Yuanxue,Hilario, Padilla. 2020

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