Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2021, Vol. 37 ›› Issue (7): 1-6.doi: 10.11924/j.issn.1000-6850.casb2020-0488

Special Issue: 水稻

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Nitrogen Application Mode and Planting Density of Rice: Effect on Growth and Yield in Hilly Area of Sichuan

Ouyang Yuyuan1(), Chen Yingli2, Lan Hanjun2, Zhu Conghua1, Yu Junqi1, Diao You1, Li Xuyi1()   

  1. 1Crop Research Institute, Sichuan Academy of Agricultural Sciences, Chengdu 610066
    2Agricultural and Rural Bureau of Zhongjiang County, Deyang Sichuan 618100
  • Received:2020-09-23 Revised:2021-01-13 Online:2021-03-05 Published:2021-03-17
  • Contact: Li Xuyi E-mail:ouyang8805@126.com;641984798@126.com

Abstract:

To explore the effects of fertilization mode and planting density on rice yield and growth in hilly area of Sichuan Province, ‘Shuyou 217’ and ‘Tianyouxiang 99’ were used as materials in this study. The main area was fertilization mode, the split area was planting density. The results showed that deep side fertilization could effectively improve rice yield, and there were some differences among different varieties. Under the deep side fertilization mode, ‘Shuyou 217’ was suitable for higher planting density, while high planting density of ‘Tianyouxiang 99’ could cause significant decrease of the number of grains per panicle and seed setting rate, and reduce the panicle rate and transfer rate. Therefore, the appropriate planting density should be determined according to the characteristics of varieties.

Key words: rice, hilly area of Sichuan, fertilization mode, nitrogen fertilizer, density, yield, growth

CLC Number: