Biotechnology Bulletin ›› 2023, Vol. 39 ›› Issue (8): 52-61.doi: 10.13560/j.cnki.biotech.bull.1985.2023-0555

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Current Status and Prospects of Maize Super High Yield Research in China

LIU Yue-e(), XU Tian-jun, CAI Wan-tao, LYU Tian-fang, ZHANG Yong, XUE Hong-he, WANG Rong-huan, ZHAO Jiu-ran()   

  1. Maize Research Center, Beijing Academy of Agriculture & Forestry Sciences, Beijing 100097
  • Received:2023-06-12 Online:2023-08-26 Published:2023-09-05
  • Contact: ZHAO Jiu-ran E-mail:lye0520@163.com;maizezhao@126.com

Abstract:

Maize, as the largest grain crop with the largest planting area and highest total yield in China, is crucial for food and feed security in China. In the increasingly tense situation of arable land resources, the space for expanding the area of crop in China is limited in the future, and the increase in crop production mainly relies on the increase in yield per unit area. In 2023, the No. 1 Central Document of the Central Government clearly proposed that we should pay full attention to grain production, carry out the construction of 1 t grain yield per 667 m2, and implement the project of increasing maize yield per unit area. The super high yield of maize is the embodiment of the highest level of excellent cultivars, production conditions, and cultivation management techniques. This article comprehensively elaborates on the policy support, current status of high yield records, distribution and meteorological characteristics of super high yield fields, and technical key points for creating super high yield. On this basis, suggestions are put forward for the large-scale high-yield creation of maize in China, including increasing scientific research investment, strengthening the breeding of new cultivars, strengthening the integration of cultivation techniques for demonstration and promotion, and strengthening the construction of farmland infrastructure.

Key words: maize, super high yield, policy, cultivar, technical measures