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本研究为盆缽试验,用蛭石作基质,以山崎配方为基础,设五个氮素水平(7、9、11、13、15 m·mol NO_3-N/l)。每处理14盆。结果表明,植株体内氮素累积量随氮素用量增加而增加。其长势及地上部生长量基本与氮素水平呈正相关。盛蕾期对磷的吸收较为缓慢,随着果实膨大,吸磷量上升较快。但植株体内磷素累积量随氮素水平的提高有降低趋势。钾的吸收累积量与氮素水平的关系与磷相似。果实产量和干物质重以氮素用量9—11m·molNo_3-N/L的处理为最高,氮素利用率亦较高。产品中还原糖,维生素C含量随氮素水平的提高而降低。粗蛋白质含量则相反。
In this study, pot experiment was conducted with vermiculite as substrate. Five nitrogen levels (7, 9, 11, 13, 15 m · mol NO_3-N / l) were set based on the Yamazaki recipe. 14 pots for each treatment. The results showed that nitrogen accumulation in plants increased with the increase of nitrogen application. Its growth and shoot growth basically correlated positively with nitrogen level. Shenglei period of phosphorus absorption more slowly, with the fruit enlargement, phosphorus up quickly. However, the accumulation of phosphorus in plants decreased with the increase of nitrogen level. The relationship between potassium uptake and nitrogen level is similar to phosphorus. The fruit yield and dry matter weight were the highest with nitrogen application of 9-11m · molNo_3-N / L and the nitrogen utilization rate was also high. Products of reducing sugar, vitamin C content decreased with the increase of nitrogen level. The crude protein content is the opposite.