| Effect of different irrigation and fertilization on water consumption and yield of corn under the condition of sprinkler irrigation |
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| DOI：10.7606/j.issn.1000-7601.2016.03.11 |
| Key Words: large-scale sprinkler irrigation corn water quirement regulation fertility water production efficiency yield |
| Author Name | Affiliation | | WANG Hai-rui | Inner Mongolia Agricultural University, Water Conservancy and Civil Engineering College, Hohhot, Inner Mongolia 010018, China | | LV Zhi-yuan | Inner Mongolia Agricultural University, Water Conservancy and Civil Engineering College, Hohhot, Inner Mongolia 010018, China | | TANG Peng-cheng | Hydroelectric and Water Conservancy Science Institute of China, Institute of Water Conservancy Science in Pastoral Areas, Hohhot, Inner Mongolia 010020, China | | MIAO Shu | Hydroelectric and Water Conservancy Science Institute of China, Institute of Water Conservancy Science in Pastoral Areas, Hohhot, Inner Mongolia 010020, China | | GUO Ke-zhen | Hydroelectric and Water Conservancy Science Institute of China, Institute of Water Conservancy Science in Pastoral Areas, Hohhot, Inner Mongolia 010020, China | | REN Jie | Hydroelectric and Water Conservancy Science Institute of China, Institute of Water Conservancy Science in Pastoral Areas, Hohhot, Inner Mongolia 010020, China |
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| Abstract: |
| Through the actual measured data in field, quantitatively researched the effects of different irrigation amounts (three levels) and fertilities (three levels) to the water comsumption rule, yield and water production efficiency of corn under the conditions of large scale sprinkler irrigation. The results showed that: The jointing stage and filling stage were the critical period of corn water requirements. The water consumption of corn in each growth stage with different treatments were change between 25.63 mm to 182.74 mm, the change range was rather big. Under the same fertility treatment, the overall variation of corn's water consumption in each growth stage was showed the change trend as first increase and then decrease. Under the same water treatment, the corn water consumption and yield were increased with the fertility increase. According to the comparison, found that the sensitivity of water to production was bigger than the sensitivity of fertilization. The relationship between total water consumption of corn in whole growth period with the yield was showed a good parabolic relation (R2=0.829) and obtained when the water consumption was 4 673 m3·hm-2, the cron yield will be the highest as 11 151 kg·hm-2. Under the same condition of irrigation and fertilizaer, the yield of SF-9 treatment will be increased production of 8.4% than SF-10(CK), the water production efficiency will be increased 15%. Other treatments will be increased the production from 7.89% to 54.51%. Under sprinkler irrigation condition, the effect of increasing corn production was obvious. |
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