| Effect of nitrogen fertilizer fertigation on maize |
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| DOI：10.7606/j.issn.1000-7601.2004.04.13 |
| Key Words: fertigation drip irrigation N-fertilizer maize yield |
| Author Name | Affiliation | | XI Jin-gen | Faculty of Resource ＆ Environment Sciences,Northwest Sci-Tech University of Agriculture and Forestry, Yangling,Shaanxi 712100,China；Institute of Crop of South Subtropic,Zhanjiang,Guangong 524091,China | | TANG Hai-jun | Faculty of Resource ＆ Environment Sciences,Northwest Sci-Tech University of Agriculture and Forestry, Yangling,Shaanxi 712100,China | | ZHOU Jian-bin | Faculty of Resource ＆ Environment Sciences,Northwest Sci-Tech University of Agriculture and Forestry, Yangling,Shaanxi 712100,China；National Key Lab for Soil Erosion and Drylard Farminy on the Loess Plateau,Yangling Shaanxi 712100,China |
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| Abstract: |
| Pot experiment was used to evaluate the effects of fertigation with nitrogen fertilizer on maize. Compared to the traditional fertilization method, fertigation with drip irrigation method increased the N uptake and dry matter accumulation of summer maize; root activity, chlorophyll content and NRA also increased. When fertilizer was applied by fertigation, the recovery of nitrogen fertilizer was high as 73.55%, with the 110.44% of increasing rate higher than that of the traditional fertilization method; and the corresponding increasing rate in dry weight of shoot and grain yield and water use efficiency for fertigation method were 49.55%, 67.57%, 109.20%, respectively. Obviously, fertilization in drop irrigation improved water use efficiency and nitrogen use efficiency; it related to efficiently control the supply of water and nutrients in soil by drip irrigation. |
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