| Study on water-salt production function based on saline water irrigation for spring corn |
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| DOI：10.7606/j.issn.1000-7601.2012.03.13 |
| Key Words: saline water spring corn Blank model Jensen model water-salt production function Northwest China |
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| Abstract: |
| Plot experiments were carried out under irrigation
with water of different salinity in the Shiyang River Basin to study the effect of water and salt factors on the growth of spring corn. Based on Blank model and Jensen model which were
generally used in the world, crop water-salt model was built. And then salinity stress factor was used to trans-form water
production function into water-salt production function.Through tests of irrigation with water of different salini-ty in 2009 and 2010 and function solutions, the salt sensitive index in different growth stage of spring corn was sought. The results showed that the salt sensitive degree sequence was seedling stage>jointing stage>tasseling-grouting stage> maturity stage. The result was verified by alternative saline water irrigation, and it showed that the crop would grow better if the irrigation happened in the growth stage with little salt sensitive degree. |
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