| Effect of different factors on magnesium content in cucumber leaf under soi-l less cultivation |
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| DOI：10.7606/j.issn.1000-7601.2007.06.18 |
| Key Words: cucumber soil-less culture magnesium mathematic model |
| Author Name | Affiliation | | XIE Xiao-yu | College of Horticulture Northwest A＆F University,Yangling,Shaanxi 712100,China；College of Agronomy and Bio—technology Southwest University, Beibei,Chongqing 400715,China | | ZOU Zhi-rong | College of Horticulture Northwest A＆F University,Yangling,Shaanxi 712100,China | | JIANG Xue-fei | College of Horticulture Northwest A＆F University,Yangling,Shaanxi 712100,China |
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| Abstract: |
| By means of universal rotational combinational design with three-factors(ground temperature as well as K+ concentration and Mg2+ concentration in nutrient solution) and five-levels,the corresponding mathematic regression models were set up.The results showed: ① under the condition of this experiment,the sequence of different factors influencing Mg content in leaves of cucumber was: Mg2+ concentration>ground temperature>K+ concentration.② There were interactions among different factors,i.e.,ground temperature was positively related to Mg2+ concentration and K+ concentration,while Mg2+ concentration was negatively related to K+ concentration.③ In order to have an optimal Mg content,the ground temperature,Mg2+ concentration and K+ concentration in nutrient solution should be 29.13℃,4 mmol/L and 4.43 mmol/L,respectively.The experiment proved that the model is accurate and reliable. |
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