| 夏岩石1，洪 豪1，赖景诗1，苏伟生1，李荣华1，张润霖1，李光光2，郭培国1.夏冬两季广州菜心的硝酸盐含量及营养品质分析[J].广东农业科学,2018,45(4):28-33 |
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夏冬两季广州菜心的硝酸盐含量及营养品质分析 |
| Analysis of nitrate and nutrition of flowering Chinese cabbage in summer and winter in Guangzhou city |
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| DOI：10.16768/j.issn.1004-874X.2018.04.005 |
| 中文关键词: 菜心 硝酸盐 营养品质 形态特征 |
| 英文关键词: flowering Chinese cabbage nitrate nutrition morphological characteristics |
| 基金项目:广东省自然科学基金（2015A030310136，2015A030313500）；广东高校省级重点平台和重大科研项目
（2015KGJHZ015）；广东省科技计划项目（2016B020201001）；广州大学创新训练项目（2016-62） |
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| 摘要点击次数: 1744 |
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| 中文摘要: |
| 为了解广州菜心的硝酸盐含量及营养品质，分别于夏冬两季对广州4 个蔬菜市场的30 个菜心
品种进行检测分析。结果显示，广州菜心的硝酸盐含量较高，有5 个菜心品种超过国家标准，15 个品种达
到严重污染程度，但冬季菜心硝酸盐含量比夏季菜心低。同时，冬季菜心的外观形态和营养品质也比夏季
菜心好。相关性分析显示，夏季菜心最大叶柄长与硝酸盐含量呈显著负相关，叶色与可溶性蛋白含量呈显
著正相关；冬季菜心的最大叶长、最大叶宽、薹粗与硝酸盐含量呈显著负相关，叶色与维生素C、可溶性总
糖和可溶性蛋白含量都有较高的相关性。因此，夏季适宜选择颜色鲜绿、叶片和叶柄长的菜心；而冬季适宜
选择颜色鲜绿、叶片大和薹粗的菜心。 |
| 英文摘要: |
| In order to investigate nitrate content and nutrition of flowering Chinese cabbage in Guangzhou city，
in summer and winter，30 varieties of flowering Chinese cabbage collected from four vegetable markets tested and
analyzed. The results showed that nitrate pollution of flowering Chinese cabbage in Guangzhou was serious. Five
varieties’ nitrate content exceeded national standard，and 15 varieties reached the serious pollution level. The nitrate
content of flowering Chinese cabbage in winter was lower than in summer，meanwhile its appearance and nutritional
quality were better. Correlation analysis results showed that petiole length of flowering Chinese cabbage in summer
was correlated significantly and negatively with nitrate content，and leaf color was significantly positively correlated
with soluble protein content. In winter，the nitrate content of flowering Chinese cabbage had significant negative
correlation with maximum lead length，maximum leaf width and stem diameter，and leaf color had high correlation
with vitamin C content，soluble sugar content and soluble protein content. Therefore，flowering Chinese cabbages
with bright green color，long leaf and petiole in summer，or with big stalk diameter in winter，have better quality. |
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