| Effects of irrigation and fertilization regulation on maize growth, water and nutrient use of drip irrigation under plastic film |
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| DOI：10.7606/j.issn.1000-7601.2018.05.24 |
| Key Words: maize drip irrigation under mulch water and fertilizer management growth yield |
| Author Name | Affiliation | | CHEN Dong-feng | Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas，Ministry of Education， Northwest A&F University, Yangling, Shaanxi 712100, China；Institute of Water-Saving Agriculture in Arid Areas of Northwest A&F University, Yangling, Shaanxi 712100, China | | LUO Peng | Institute of Water Resources and Hydropower Research of Shanxi, Taiyuan, Shanxi 030002, China | | ZHANG Fu-cang | Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas，Ministry of Education， Northwest A&F University, Yangling, Shaanxi 712100, China；Institute of Water-Saving Agriculture in Arid Areas of Northwest A&F University, Yangling, Shaanxi 712100, China | | ZOU Hai-yang | Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas，Ministry of Education， Northwest A&F University, Yangling, Shaanxi 712100, China；Institute of Water-Saving Agriculture in Arid Areas of Northwest A&F University, Yangling, Shaanxi 712100, China | | GUO Jin-jin | Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas，Ministry of Education， Northwest A&F University, Yangling, Shaanxi 712100, China；Institute of Water-Saving Agriculture in Arid Areas of Northwest A&F University, Yangling, Shaanxi 712100, China | | ZHENG Jing | Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas，Ministry of Education， Northwest A&F University, Yangling, Shaanxi 712100, China；Institute of Water-Saving Agriculture in Arid Areas of Northwest A&F University, Yangling, Shaanxi 712100, China | | WEN Lei | Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas，Ministry of Education， Northwest A&F University, Yangling, Shaanxi 712100, China；Institute of Water-Saving Agriculture in Arid Areas of Northwest A&F University, Yangling, Shaanxi 712100, China | | ZHANG Jia-min | Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas，Ministry of Education， Northwest A&F University, Yangling, Shaanxi 712100, China；Institute of Water-Saving Agriculture in Arid Areas of Northwest A&F University, Yangling, Shaanxi 712100, China |
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| Abstract: |
| Aiming at the problem, too much fertilizer and low utilization rate of water in agricultural production of FenHe irrigation areas, the effects of water and fertilizer supply on maize growth, dry matter, yield, IWUE and PFP were assessed to provide a theoretical and experimental basis for the irrigation and fertilizer regulate of maize. The field drip irrigation test was conducted in the water saving demonstration base of water conservancy and hydropower research institute in Shanxi Province. There were three irrigation levels (W1:60%ETc; W2:80%ETc; W3:100%ETc(ETc is crop evapotranspiration)) and three N-P2O5-K2O fertilizer levels (100-50-50, 170-75-75 and 240-100-100 kg·hm-2; denoted as F1, F2, F3). The results showed that besides the components of yield, the single factor of fertilization had statistically significant effects on each index. Plant height, leaf area index, dry matter accumulation and yield increased with irrigation and fertilization. Water and fertilizer interaction had no significant effect on yield and irrigation water use efficiency. The ratio of grain of high water (W3) treatment was 4% higher than that of low water (W1), and high fertilizer (F3) treatment was 4.64% higher than that of low fertilizer (F1). The yield of W3F3 treatment was 12 474.34 kg·hm-2 and was 38.36% higher than that of W1F1 treatment. W2F2 treatment was 5.2% lower than W3F3 treatment, but saved 528 m3·hm-2 water and 120 kg·hm-2 fertilizer. The utilization efficiency of irrigation water decreased with the increase of irrigation amount, increased with fertilizer application rate.The partial fertilizer productivity increased with irrigation amount, and decreased with the increase of fertilizer. Yield irrigation water use efficiency of W2F2 treatment was 5.61kg·m-3 and was 18.9% higher than W3F3 treatment. Yield partial fertilizer productivity was 37.05 kg·kg-1 and was 30.7% higher than W3F3 treatment. Considering high yield, water saving, fertilizer and high efficiency, 80%ETc irrigation amount and N-P2O5-K2O 170-75-75 kg·hm-2 fertilizer was the best irrigation and fertilization combination. |
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