| 氮用量和株距对烤烟K326光合作用、干物质积累、产质量的影响(英文) |
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| 引用本文： | 张志高,刘齐元,何宽信,冯小虎,程元强,邓懿,程谦,荣冠,李琰琰,李立新.氮用量和株距对烤烟K326光合作用、干物质积累、产质量的影响(英文)[J].农业科学与技术,2016(3):645-649. |
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| 作者姓名： | 张志高 刘齐元 何宽信 冯小虎 程元强 邓懿 程谦 荣冠 李琰琰 李立新 |
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| 作者单位： | 1. 江西省烟草公司抚州市公司，江西抚州344000; 江西农业大学农学院/作物生理生态与遗传育种教育部重点实验室/江西省作物生理生态与遗传育种重点实验室，江西南昌330045;2. 江西省烟草公司抚州市公司,江西抚州,344000;3. 江西省烟叶科学研究所,江西南昌,330025 |
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| 基金项目： | Ltd.(201101006)，Jiangxi S&T Planning Program (20112BBF60001).基金项目江西省烟草专卖局科技项目(201101006)；江西省科技计划项目(20112BBF60001)。 |
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| 摘 要： | 以烤烟K326品种为材料,通过大田试验研究氮肥用量和株距对烤烟大田光合作用、干物质积累、产质量的影响。研究结果表明:不同处理间胞间CO2浓度以M2N2(中密中氮)最高,M1N1(低密低氮)最低,且二者差异极显著;净光合速率以M2N2处理最高,M3N3最小。团棵期和现蕾期,株距相同时各处理随着氮肥用量增加,根系干重呈增加趋势,茎则无明显规律,叶干物质积累呈现慢快慢的节奏。同一生育期内叶的干物质积累均高于茎和根,随着生育期的进行,烟叶所占全株比值逐步减小且变化明显,但一直都占50%以上比例。综合考虑产量、质量、产值等因素,得出以处理M2N2效果最好。
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| 关 键 词： | 氮用量 株距 产质量 |
Effects of Nitrogen Application and Plant Spacing on Photosynthesis |
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| Abstract: | Taking the flue-cured tobacco variety K326 as material, the research con-ducted field experiment to study the effects of quantity of nitrogen fertilizer and plant spacing on tobacco photosynthesis, dry matter accumulation, yield and quality. The results showed that the CO2 concentration in the intercel ular space was the highest in M2N2, and was the lowest M1N1, with extremely significant differences. The net photosynthetic rate was the highest in M2N2 and the lowest in M3N3. In resettling and squaring stages, with the same spacing, the weights of root dry matter were growing in different treatments upon nitrogen quantity; the weight of dry matter in stem showed irregularity; the dry matter of leaf accumulation kept slow in early and end stages, but fast in middle stage. In the same growth stage, dry matter accu-mulation of leaf was higher than those of stem and root, and the proportion of to-bacco leaf to the whole plant was decreasing though always kept above 50%. In general, it can be concluded from yield, quality and output value that M2N2 per-formed the best. |
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| Keywords: | Nitrogen application Plant spacing Yield and quality |
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