Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2020, Vol. 36 ›› Issue (1): 6-13.doi: 10.11924/j.issn.1000-6850.casb20190700418

Special Issue: 水稻

Previous Articles     Next Articles

Nanocarbon-based Fertilization Reduction Mode: The Effect on Rice Yield and Efficiency of Nitrogen Fertilizer in Cold Region

Huai Baodong1, Sui Wenzhi1(), Tian Yanhong1, Xu Fei1, Li Peiran1, Sui Xin1, Yan Fengchao1, Li Peishan2   

  1. 1 Heilongjiang Academy of Land Reclamation Sciences, Harbin 150038;
    2 Northeast Agricultural University of Life Science, Harbin 150038
  • Received:2019-07-12 Revised:2019-08-30 Online:2020-01-05 Published:2020-01-07
  • Contact: Sui Wenzhi E-mail:suiwz@sina.com

Abstract:

To solve the problems of fertilizer supply shortage and low yield of rice in northern cold region caused by reduced fertilizer supply, we selected nanocrystalline carbon synergist as material, used rapid instrument detection and plant routine determination methods, to study the effects of nano-carbon added conventional fertilization mode and reduced fertilizer supply mode on yield characteristics of rice and fertilizer use efficiency. The results showed that compared with conventional fertilization mode (CK), the nano-carbon added conventional fertilization mode (SM-A), nitrogen fertilizer application of 10% reducing mode (SM-B) and nitrogen fertilizer application of 20% reducing mode (SM-C) had significant influence on rice plant morphological characteristics, photosynthetic physiological characteristics, yield characteristics and fertilizer use efficiency. Among them, SM-B had the greatest increase effect, followed by SM-A and the then SM-C. And for the aspect of economy benefit, the increased value of SM-A, SM-B and SM-C was 563.56, 1374.20 and -1391.08 yuan/hm 2, respectively, SM-B got the largest economic benefit increase. This study indicates that SM-B can improve the photosynthetic physiological characteristics of rice during growth period, increase plant production and fertilizer use efficiency, it is an ideal and safe mode for reducing fertilization of rice in cold region.

Key words: rice in cold region, nanocrystalline carbon, fertilization reduction mode, rice yield, nitrogen fertilizer use efficiency

CLC Number: