| Research on the leaf area index, dry matter accumulation with yield of seed maize under different irrigation methods |
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| DOI：10.7606/j.issn.1000-7601.2017.06.04 |
| Key Words: irrigation methods seed maize LAI dry matter accumulation yield |
| Author Name | Affiliation | | WANG Zeng-li | State Key Experimental Station for Efficient Irrigation Water Use of Wuwei City, Wuwei, Gansu 733000, China | | LUAN Yuan-li | State Key Experimental Station for Efficient Irrigation Water Use of Wuwei City, Wuwei, Gansu 733000, China | | WEN Guang-gui | Department of Mechanical Engineering, Wuwei Occupational College, Wuwei, Gansu 733000, China | | DONG Ping-guo | State Key Experimental Station for Efficient Irrigation Water Use of Wuwei City, Wuwei, Gansu 733000, China |
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| Abstract: |
| Through field experiment, the effect of three irrigation methods as small border irrigation (SBI), conventional furrow irrigation (CFI) and alternate furrow irrigation (AFI) on LAI, dry matter accumulation and yield of seed maize were researched. The result showed that: Under different irrigaton methods, the LAI in seeding stage to yield of seed maize assumed a significantly positive correlation, the LAI in heading stage to yield of seed maize assumed a significantly negative correlation. It indicated that appropriate water control and fertilizer control measures should be taken properly for avoiding the growth redundancy in late reproductive stage. Using the AFI method can let crop root zone moist and dry areas appear alternately, it can be induced the effect of compensatory growth, also entering rapid accumulation of dry matter period will be sooner than CFI and SBI. The dry matter accumulation in heading stage to yield assumed significantly positive correlation (R2=0.77). Under the alternative furrow irrigation method, the irrigation schedule,as the irrigation times was 8 and irrigation norm was 2 250 m3·hm-2 which can be steadily increased the economic output, exhibited a higher better WUE, but in the heading stage to filling stage it was desirable to increase irrigation frequency or irrigation quota. |
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