Journal of Food, Agriculture and Environment

Effects of nitrogen fertilization and supplemental irrigation on maize growth and nitrogen absorption in Loess Plateau of Northwest China

Author(s):

Xiukang Wang ^{1, 2, 3}*, Zhanbin Li ^{1, 2}, Yingying Xing ⁴

Recieved Date: 2013-07-10, Accepted Date: 2013-10-14

Abstract:

Pot experiments were conducted to study the effects of nitrogen fertilisation and supplemental irrigation on maize growth (Zea mays L.), root activity and nitrogen absorption at the Loess Plateau in Changwu Experimental Station, Shaanxi province, Northwest China in 2009. The experiment in a pot was an incomplete factorial design which consisted of three nitrogen fertilisation and a full irrigation check treatment, and four different growth period (seedling, jointing and filling stages and mature period) under two levels of supplemental irrigation (40% and 80% of field capacity) treatments with irrigation frequency ranged from 2 to 7 days for drip. The results show that a significant effect of nitrogen fertilisation and supplemental irrigation of growth on maize plant height, leaf area and shoot dry weight. The results indicated that jointing stage is the critical period of water demand in whole growing seasons, and suggested that reducing the supplement of water at seedling stage and mature period have less effect on maize growth. The maize growth is obvious effect of the supplemental irrigation increase after seedling stage. The more supplemental irrigation amounts, the more nitrogen was absorbed by root and stem leaves. Under the same supplemental irrigation levels, the maize nitrogen content and accumulated nitrogen absorption are characterised by high nitrogen treatment > medium nitrogen treatment > low nitrogen treatment. The results indicated that nitrogen fertilisation was used to the regulation of maize growth in different supplemental irrigation levels.

Keywords:

Maize, supplemental irrigation, growth stage, biomass

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Journal: Journal of Food, Agriculture and Environment
Year: 2013
Volume: 11
Issue: 3&4
Category: Agriculture
Pages: 959-963

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