Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2022, Vol. 38 ›› Issue (13): 13-19.doi: 10.11924/j.issn.1000-6850.casb2021-0582

Special Issue: 生物技术 玉米

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Responses of Spring Maize Agronomic Characters and Nutrient Accumulation Dynamics to Water-soluble Fertilizer Management

WANG Xin(), MA Junxiang, TENG Zeyu, WANG Bai, CHEN Zhiwen, ZHANG Qing()   

  1. Jilin Province University New Type Fertilizer Engineering Research Center, Jilin Normal University, Siping, Jilin 136000
  • Received:2021-06-03 Revised:2021-11-08 Online:2022-05-05 Published:2022-06-08
  • Contact: ZHANG Qing E-mail:wangxin960602@126.com;zhangqing8018@126.com

Abstract:

Exploring the best water-soluble fertilizer management measures for spring maize in the semi-arid area of northeast China is an effective way to achieve fertilizer saving and yield increasing. The experiment was conducted under film-mulched drip irrigation field condition, with ‘DK 159’ as the test object, to study the effects of water-soluble fertilizer management on the agronomic characters and nutrient accumulation of spring maize in the semi-arid area of the western part of Jilin Province. Correlation and path analysis show that the correlation between yield (Y) and various agronomic characters, from strong to weak, is the kernel number per row (X4)> ear thickness (X1)> kernel row number (X3)> ear length (X2)> 100-kernel weight (X5). The optimal regression equation of the yield with kernel row number and kernel number per row is Y=-14878.79+465.886X4+855.646X3 (R2=0.863, F=18.92). At the same time, topdressing of nitrogen, phosphorus and potassium fertilizer for 4 times is beneficial not only to the increase of the ear thickness, ear length, kernel row number, kernel number per row and 100-kernel weight of spring maize, but also to the accumulation and distribution of nitrogen, phosphorus and potassium after 63 days of seedling emergence. Therefore, on the basis of the same amount of water-soluble fertilizer and the fertilization method, applying nitrogen, phosphorus and potassium fertilizer in stages is essential to increase the yield of spring maize.

Key words: agronomic characters, path analysis, nutrient accumulation dynamics and distribution, spring maize, water-soluble fertilizer

CLC Number: