Studies of Waterlogging Effect on Corn and Its Protective Measures Ⅲ.Effects of Nitrogen Amount on Alleviation of Waterlogging

doi:10.3321/j.issn:1000-7091.1989.02.006

Abstract

Abstract: Two years' field experiments were carried out to determine the effects of soil fertility and sidedressed N amount on the alliviation of waterlogging effects on summer corn.Results indicated that corn seedlings grew much slowly after 5 days' flooding, but higher soil fertility and dressing of N fertilizers exerted considerable effects on the recovery of the flooded seedlings.As compared with the non-nitrogen fertilized plots, dressing with 15 and 30 kg(NH4)2SO4 per mu after flooding increased grain yield by 13.8% and 22.8% in medium-fertility plots, and by 9.3% and 11.2% in fertile plots. But there was no significant difference between the two soil fertility levels.

Key words: Corn, Waterlogging, Denitrification, Aeration of soil

Chen Guoping, Zhao Shixiao, Yang Hongyou. Studies of Waterlogging Effect on Corn and Its Protective Measures Ⅲ.Effects of Nitrogen Amount on Alleviation of Waterlogging[J]. ACTA AGRICULTURAE BOREALI-SINICA, 1989, 4(2): 26-31. doi: 10.3321/j.issn:1000-7091.1989.02.006.

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