| 谢小玉,邹志荣,江雪飞.影响无土栽培黄瓜叶片中镁含量的因素研究[J].干旱地区农业研究,2007,(6):85~88 |
| 影响无土栽培黄瓜叶片中镁含量的因素研究 |
| 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 |
| 中文关键词: 黄瓜 无土栽培 镁 数学模型 |
| 英文关键词:cucumber soil-less culture magnesium mathematic model |
| 基金项目:国家863计划项目“可控环境下无公害蔬菜全季节优质高效生产技术”(2001AA247012) |
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| 中文摘要: |
| 温室三因素(地温、营养液钾、镁离子浓度)五水平旋转组合设计试验,分析无土栽培黄瓜开花结果前、中、后期叶片中镁含量的影响因素,得到黄瓜叶片中镁含量对3因素的回归数学模型。结果表明:①在本试验条件下,3因素对黄瓜叶片中镁含量的影响顺序是镁离子浓度>地温>钾离子浓度;②各因素间存在着交互作用,地温与营养液中镁离子浓度和钾离子均呈正相关,镁离子与钾离子呈负相关;③要使黄瓜叶片中镁的含量最高,相对应的地温、营养液镁离子浓度、钾离子浓度应分别为29.13℃、4 mmol/L、4.43 mmol/L。试验结果经后续验证,证明构建的模型准确可靠。 |
| 英文摘要: |
| 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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