Effects of coated urea and nitrogen fertilizer synergist on growth and yield of fresh maize

doi:10.14088/j.cnki.issn0439-8114.2022.16.006

Abstract

Abstract: In order to explore a new light reduction and high-efficiency fertilization technology for fresh maize, four treatments were set upconventional fertilization （treatment 1）, 60-day coated urea （treatment 2）, 90 day coated urea （treatment 3）, 60 day coated urea reduction of 15% and nitrogen fertilizer synergist （treatment 4）. The effects of different coated fertilizers and nitrogen reduction combined with nitrogen fertilizer synergist on the growth and yield of fresh maize were studied. The results showed that the plant height, leaf age, ear height, grain number per ear and yield of fresh corn in treatment 2 were higher than those in treatment 3;there was no significant difference in fresh corn yield among treatments 1, 2 and 4, but the effective ear number of fresh corn in treatment 4 was higher than that in other treatments and the difference was significant. Compared with treatment 2, treatment 4 reduced nitrogen application rate by 15%, but increased yield by 4.05%. Compared with treatment 1, treatment 4 was one-time fertilization, which was simple to operate and saved labor input. At the same time, the yield to input ratio of fresh corn planted in treatment 4 was the highest, which was 15.67. Therefore, the fertilization technique of nitrogen fertilizer combined with nitrogenous fertilizer synergist is more suitable for fresh corn planting.

Key words: fresh maize, slow control coated urea, nitrogen fertilizer synergist, yield

CLC Number:

S158

XIE Yuan-yuan, XIONG You-sheng, SUN Chen, LI Jia-ying, ZHOU Jian-xiong, XU Fang-sen. Effects of coated urea and nitrogen fertilizer synergist on growth and yield of fresh maize[J]. HUBEI AGRICULTURAL SCIENCES, 2022, 61(16): 35-39.

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