| 不同氮钾水平对番茄产量、品质及蔗糖代谢的影响 |
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| 引用本文： | 齐红岩,李天来,周 璇,富宏丹.不同氮钾水平对番茄产量、品质及蔗糖代谢的影响[J].中国农学通报,2005,21(11):251-251. |
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| 作者姓名： | 齐红岩 李天来 周 璇 富宏丹 |
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| 作者单位： | 辽宁省设施园艺重点实验室沈阳农业大学园艺学院 沈阳110161 |
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| 基金项目： | 国家自然科学基金资助项目“番茄光合运转糖-蔗糖的代谢及其调控”（30170640）,辽宁省自然科学基金资助项目“设施番茄光合物质生产、分配与代谢的环境调控机理研究”（20022080）. |
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| 摘 要： | 以“辽园多丽”番茄为试材，在日光温室内桶栽条件下，研究不同氮钾水平对番茄产量、品质以及蔗糖代谢的影响。结果表明：土壤中适量的氮肥配施钾肥不仅可明显促进番茄植株的营养生长，促进番茄丰产形态的建立，使产量提高，而且还可提高果实中可溶性糖含量及糖酸比，降低有机酸含量，从而提高番茄的品质。但过量施用氮肥对番茄各器官生长发育、产量以及糖分积累均不利。同时，钾离子对蔗糖代谢的相关酶具有重要的调节作用。增施钾素，提高了蔗糖代谢相关酶的活性，促进了光合产物的合成和运输，同时也促进了成熟果实中蔗糖的代谢。而氮素过高或过低均对
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| 关 键 词： | 番茄 氮钾处理 产量 品质 蔗糖代谢 |
| 收稿时间： | 2005-04-12 |
| 修稿时间： | 2005-04-122005-07-13 |
Effects of Different Nitrogen and Potassium Levels on Yield, Quality and Sucrose Metabolism of Tomato |
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| Qi Hongyan,Li Tiantai,Zhou Xuan,Fu Hongdan.Effects of Different Nitrogen and Potassium Levels on Yield, Quality and Sucrose Metabolism of Tomato[J].Chinese Agricultural Science Bulletin,2005,21(11):251-251. |
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| Authors: | Qi Hongyan Li Tiantai Zhou Xuan Fu Hongdan |
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| Institution: | Key laboratory of Protected Horticulture of Liaoning province, Horticultural College, Shenyang Agricultural University, Shenyang 110161 |
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| Abstract: | "Liaoyuanduoli" tomato was planted in pot in solar greenhouse. The effects of different nitrogen and potassium levels on yield, quality and sucrose metabolism of tomato were conducted in this experiment. The results indicated that vegetation growth of tomato plant was promoted with application of potassium fertilizer on the basis of suitable nitrogen. Furthermore, there was the more of potassium fertilizer application the more of better yield configuration build of tomato to some extent. Therefore, the yield increased greatly. Soluble sugar of fruit and the ratio of sugar/acid increased and organic acid decreased with enhancing application of potassium fertilizer. Hence, fruit quality improved. On the contrary, excessive nitrogen had negative influence on all aspects which have mentioned above. K played an important role in regulating sucrose-metabolizing enzymes. Activities of sucrose-metabolizing enzymes were enhanced with increasing application of potassium. Hence, synthesize and transport of photosynthates were accelerated, and the hydrolysis of sucrose was strengthened of ripe fruit. Activities of sucrose -metabolizing enzymes were restrained with excessive or deficient application of nitrogen while it was benefit to increase activities of enzymes of proper nitrogen level in soil. In a word, as to obtain high yield and quality tomato, it would be more preferable to apply little or absent nitrogen fertilizer when there was enough nitrogen in soil and to apply proper potassium. |
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| Keywords: | Tomato (Lycopersicon esculentum Mill ) Different nitrogen and potassium levels Yield Quality Sucrose metabolism |
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