Crops ›› 2019, Vol. 35 ›› Issue (1): 1-8.doi: 10.16035/j.issn.1001-7283.2019.01.001

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Research Progress on Agronomic Practice for Grain Moisture Loss of Maize

Yifei Zhang,Song Yu,Yufeng Wang,Kejun Yang,Zhuangyuan Guo,Yao Li,Yishan Sun,Wenbao Jia,Yafeng Zhang   

  1. College of Agriculture, Heilongjiang Bayi Agricultural University/Heilongjiang Provincial Key Laboratory of Modern Agricultural Cultivation and Crop Germplasm Improvement, Daqing 163319, Heilongjiang, China
  • Received:2018-08-01 Revised:2018-12-21 Online:2019-02-15 Published:2019-02-01
  • Contact: Kejun Yang

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Abstract:

Grain maize is the main maize product in China, its grain moisture content in harvest period is a key factor determining the quality of mechanical grain harvesting, storage safety and economic benefits. High grain moisture content in harvest period has become an important economic and technical problem that restrict the large area demonstration, popularization and application of mechanical grain direct harvesting technology in China, detrimental effect on quality and safety of maize and its products, hinder the high quality and efficiency development of maize industry. In this paper, studies related agronomic practice for grain moisture loss of maize in China and abroad were summarized and analyzed. For the whole mechanized production process of maize in future, on the premise of selecting suitable varieties for grain mechanized direct harvesting, combined the precise distribution of varieties with different ripening stages, we should improve related key cultivation techniques. These include modified planting patterns, optimized precise methods for nutrient and water management, innovative measure for timely canopy structure regulation, and highly effective chemical regulation products for grain dehydration to coordinate the synergistic relationship between grain filling and dehydration kinetics, constructing well ventilated and high light efficiency population micro-area environment, accelerating grain moisture loss during later growth development period. In terms of harvesting time adjustment, besides the factors of grain dehydration dynamics process for different varieties before and after physiological maturation, planting scale, market supply and demand pattern, agricultural machinery dispatching management and so on, the yield losses caused by lodging, ear shedding, ear rot, pests and wildlife destruction in field should also be fully considered. In addition, it is necessary to strengthen the effective manufacture of light and simplified agricultural machinery equipment matched with key technical measures, promote deep integration of agronomy and agricultural machinery, and ultimately help to accelerate grain mechanized direct harvesting technology application to ensure the quality, safety, the competitiveness and the sustainability of maize industry in China.

Key words: Maize, Grain, High efficiency moisture loss, Agronomic practice

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doi: 10.4236/ajps.2015.62043
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