| 石小虎,曹红霞,杜太生,牛云慧,王雪梅.温室膜下沟灌水氮耦合对番茄品质的影响与评价研究[J].干旱地区农业研究,2013,31(3):79~82 |
| 温室膜下沟灌水氮耦合对番茄品质的影响与评价研究 |
| Impact of water and nitrogen coupling on quality of greenhouse tomato with furrow irrigation under film |
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| DOI：10.7606/j.issn.1000-7601.2013.03.12 |
| 中文关键词: 膜下沟灌 水氮耦合 番茄 品质 主成分分析法 综合评价 |
| 英文关键词:furrow irrigation under membrane water and nitrogen coupling tomato quality principal component analysis comprehensive evaluation |
| 基金项目:水利部公益性行业科研专项(201001061)；陕西省自然科学基金项目(2012JM3004)；中央高校基本科研业务费专项资金(QN2011022) |
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| 中文摘要: |
| 以温室番茄为试材，研究了膜下沟灌水氮耦合对番茄一些品质指标(有机酸、可溶性糖、Vc、硝酸盐、
糖酸比)的影响，并采用主成分分析法对其进行多目标综合评价。试验设置1485 m3·hm-2、2080 m3·hm-2两个灌水
水平和225 kg·hm-2、410 kg·hm-2和630 kg·hm-2三个施氮水平。结果表明，灌水量和施氮量作为单一因子和水氮
交互作用对番茄不同品质指标影响均不同；增加灌水量，可提高番茄果实有机酸、硝酸盐含量；施氮过多或过少可
降低番茄果实可溶性糖含量、Vc含量、糖酸比；果实中硝酸盐含量随施氮量的增加而提高，随灌水量的增加而降低。
采用主成分分析法对番茄品质指标进行多目标综合评价，得到综合评价最高的处理为低水中氮(W1485N410)处理，综合评价最低的处理为高水高氦(W2080N630)处理。 |
| 英文摘要: |
| Impact of water and nitrogen coupling on tomato
quality indicators(organie acids, soluble sugar, Ve, nitrate, sugar acid ratio)with furrow irrigation under film was studied in this paper by using multi-objective evaluation with principal component analysis. Two irrigation levels(1485m3·hm-2 and 2080 m3·hm-2)and three N levels(225 kg·hm-2,410 kg·hm-2 and 630 kg·hm-2)were used in this study. The results showed that irrigation and nitrogen
amount as a single factor, in combination with water and nitrogen interaction, affected tomato quality indicators in different degrees.Increasing irrigation amount improved tomato fruit organie acids, nitrate content; while excess or lack of nitrogen reduced tomato fruit soluble sugar content, Vc content, sugar acid ratio. Nitrate content in the fruit inereased with increase of nitrogen, decreased with increase of irrigation volume. By using multi-objective evaluation of tomato quality indicators with principle component analysis, we draw conclusion that low water medium nitrogen process(W1485N410)had highest colligate index, on other hand, high water high nitrogen proeess(W2080N630)had the lowest one. |
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