Effects of different application rates of slow and controlled-release fertilizer on the growth of fresh corn

doi:10.14088/j.cnki.issn0439-8114.2023.06.002

Abstract

Abstract: In order to explore the effect of controlled-release fertilizer application rate on the growth status of fresh corn（Zea mays L.）, field plot experiments with different fertility were carried out with ‘Zhongtian No.5’ and ‘Xixing Wucai Xiannuo’ as materials, the growth indexes of maize in different growth periods were compared, and the best controlled-release fertilizer application rate was screened. The results showed that, the determination coefficient of the fitting model between the application amount of controlled-release fertilizer and each index of fresh corn except sugar content was above 0.8, which reached a very significant level （P<0.01）, indicating that the application of controlled-release fertilizer could significantly increase the physiological indexes of fresh corn. The 600 kg/hm² application rate was the best fertilization amount of controlled-release fertilizer under this experimental condition. When excessive fertilization occurred, most indexes showed a downward trend, and the fertilizer utilization rate decreased.

Key words: controlled-release fertilizer, fresh corn（Zea mays L.）, agronomic trait, effect

CLC Number:

HUANG Yun, XU Tian-cheng, ZHAN Wei-yu, GAO Zi-wei, LIN Si-yuan, DENG Se-yuan, YANG Bo, YANG Zhong-bo, CHEN Qing-chun. Effects of different application rates of slow and controlled-release fertilizer on the growth of fresh corn[J]. HUBEI AGRICULTURAL SCIENCES, 2023, 62(6): 6-10.

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