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| DOI： |
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| Effect of Planting Density on Water Consumption of Seed-Maize and Validation of a Model |
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SHI Rongchao, TONG Ling, HE Liuyue, JIANG Xuelian
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Center for Agricultural Water Research in China, China Agricultural University, Beijing 100083, China
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| Abstract: |
| Field experiments were conducted from March to September in 2015 to study the law of water consumption and applicability of water consumption model in seed corn with different planting densities. The experimental treatments of six planting densities (67 500, 82 500, 97 500, 112 500, 127 500 and 142 500 plants/hm2) were laid out in a randomized complete block design with three replicates, and 97 500 plants/hm2 was the local planting density, which was used as a control treatment. The morphological traits and water consumption of seed corn plants in different densities condition were observed. The results indicated that LAI and water consumption of plants increased with the increase of planting density, and the effect of planting density on crop height was not significant. Compared to the dual crop coefficient method, SIMDual Kc model and the dual crop coefficient with Kd method, Kdensity method had better performance in estimating the value of Kc under different planting densities of seed corn in an arid region of Northwest China. |
| Key words: corn; planting density; water consumption; model |
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