| 紫外分光光度法在杂交棉氮素营养诊断中的应用研究 |
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| 引用本文： | 姜益娟,郑德明,王红叶. 紫外分光光度法在杂交棉氮素营养诊断中的应用研究[J]. 土壤通报, 2011, 0(6): 1345-1349 |
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| 作者姓名： | 姜益娟 郑德明 王红叶 |
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| 作者单位： | 塔里木大学植物科学学院; |
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| 基金项目： | 新疆维吾尔自治区高校科研计划科学研究重点项目(XJEDU2007I42)资助 |
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| 摘 要： | 在滴灌条件下,应用紫外分光光度法测定了杂交棉不同生育期叶柄硝酸盐含量,对杂交棉氮素营养诊断及氮肥推荐进行了田间试验。结果表明:杂交棉在现蕾期、初花期、盛铃期和铃期的倒4叶叶柄硝酸盐含量与施氮量之间呈极显著线性相关,各生育期叶柄硝酸盐含量与产量之间也具有极显著相关性,由此确定了杂交棉现蕾期、初花期、盛铃期和铃期的硝酸盐临界值,分别为18596.3、2625.7、3431.3和2462.8 mg L-1;用一元二次模型模拟氮肥与产量之间的关系,得到在滴灌条件下,最佳产量为6413.7 kg hm-2,对应的最佳施氮量为348.1 kg hm-2;根据杂交棉各生育期叶柄硝酸盐浓度与施氮量和产量之间的关系,建立了各生育期氮肥推荐模型。
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| 关 键 词： | 紫外分光光度法 杂交棉 氮素 营养诊断 |
Application of UV-Spectrophotometry in the Nutrition Diagnosis of Nitrogen in Hybrid Cotton |
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| JIANG Yi-juan,ZHENG De-ming,WANG Hong-ye. Application of UV-Spectrophotometry in the Nutrition Diagnosis of Nitrogen in Hybrid Cotton[J]. Chinese Journal of Soil Science, 2011, 0(6): 1345-1349 |
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| Authors: | JIANG Yi-juan ZHENG De-ming WANG Hong-ye |
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| Affiliation: | JIANG Yi-juan,ZHENG De-ming,WANG Hong-ye(College of Plant Science and Technology,Tarim University,Alar 843300,China) |
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| Abstract: | Under drip irrigation,field experiments were conducted to test the nitrogen diagnosis of hybrid cotton and nitrogen fertilizer recommendation.UV-Spectrophotometry was applied to measure NO3-concentration of the fourth expanding petiole at different growth stages of hybrid cotton.The results showed that there were distinctly significant linear correlation between the nitrate concentrations in the fourth expanding petiole of hybrid cotton and the application amounts of N fertilizer at the budding stage,early ... |
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| Keywords: | UV-spectrophotometry Hybrid cotton Nitrogen Nutrition diagnosis |
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