| Analysis on benefit of potato/broad-bean intercropping modes in alpine humid region |
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| DOI：10.7606/j.issn.1000-7601.2013.04.016 |
| Key Words: alpine humid region potato intercropping benefit |
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| Abstract: |
| The experiment was conducted to investigate photosynthetic physiological parameters, agronomic characters and land equivalent ratio (LER) of potato and broad bean, and to compare crop output, economic benefit and soil nutrients under different potato/broad-bean intercropping modes, so as
to provide theoretical basis and technological support for highly efficient intercropping cultivation of potato in alpine humid region. The results indicated that, under the mode with whole film covering and double ridge-furrow planting, the photosynthetic physiological activity of potato was improved, and the yield of fresh tubers was 35 131.5 kg·hm-2, being significantly higher than that
of traditional ridge planting mode (31 302.0 kg·hm-2). The LER of all intercropping modes was higher than 1, in which the LER of whole film covering and double ridge-furrow planting mode was 2.07, and the yield increase rate of intercropping was 107.17%. Therefore, the advantages of intercropping were remarkable, and it was an effective way to realize intensive use of land, labor, soil nutrient, water and heat resources by intercropping. Considering input and output comprehensively, the economic benefit of the intercropping mode with whole film covering and double ridge-furrow planting was the highest, and it was suggested to extend such a mode in alpine humid region. |
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