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Acta Agron Sin ›› 2012, Vol. 38 ›› Issue (01): 80-85.doi: 10.3724/SP.J.1006.2012.00080

• TILLAGE & CULTIVATION · PHYSIOLOGY & BIOCHEMISTRY • Previous Articles     Next Articles

Analysis on Distribution, Yield Structure and Key Culture Techniques of Maize Super-high Yield Plots in Recent Years

CHEN Guo-Ping1,GAO Ju-Lin2,ZHAO Ming3,DONG Shu-Ting4,LI Shao-Kun3,YANG Qi-Feng5,LIU Yong-Hong6,WANG Li-Chun7,XUE Ji-Quan8,LIU Jing-Guo9,LI Chao-Hai10,WANG Yong-Hong11,WANG You-De12,SONG Hui-Xin13,ZHAO Jiu-Ran1,*   

  1. 1 Beijing Academy of Agricultural & Forestry Sciences, Beijing 100097, China; 2 Inner Mongolia Agricultural University, Huhhot 010000, China; 3 Chinese Academy of Agricultural Sciences, Beijing 100081, China; 4 Shandong Agricultural University, Tai’an 271000, China; 5 Gansu Agricultural Technology Extension station, Lanzhou 730030, China; 6 Sichuan Academy of Agricultural Sciences, Chengdu 610066, China; 7 Jilin Academy of Agricultural Sciences, Changchun 130000, China; 8 Northwest A & F University, Yangling 712100, China; 9 Shandong Denghai Seeds Co., Ltd, Laizhou 261448, China; 10 Henan Agricultural University, Zhengzhou 450000, China; 11 Ningxia Academy of Agriculture and Forestry Sciences, Yongning 750105, China; 12 Xinjiang Academy of Agricultural and Reclamation Science, Shihezi 832000, China; 13 Beijing Agricultural Technology Extension Station, Beijing 100029, China
  • Received:2011-06-14 Revised:2011-10-12 Online:2012-01-12 Published:2011-11-07
  • Contact: 赵久然, E-mail: maizezhao@126.com, Tel: 010-51503936

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Abstract: Maize high-yield potential and small-area super-high yield research in different areas were conducted in 2006–2010. The geographical distribution, yield components and key culture techniques of 159 maize super-high yield plots with yield of ≥15 000 kg ha-1 were analyzed comprehensively. Results showed that: (1) most high-yield plots distributed in higher latitude (40°–43°N) and higher elevation regions (1 000–1 500 m) with abundant sunlight and higher temperature in the daytime and lower temperature in the nighttime which were the primary factors affected super-high yield; (2) the yield structure was 88 950 ears ha-1, 541 kernels per ear, 360.0 g per 1000-kernel, 191.8 g per ear, and the average yield was 16 692 kg ha-1;the ear and kernel numbers among yield components were correlated significantly with yield; (3) the key culture techniques for maize high-yield was selecting high density tolerant maize cultivar combined with reasonable dense planting, abundant water and fertilizer supply, scientific management, and film mulching.

Key words: Maize, High-yield plot, Yield structure, Cultivation technology

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