新疆农业科学 ›› 2019, Vol. 56 ›› Issue (12): 2219-2227.DOI: 10.6048/j.issn.1001-4330.2019.12.007

• 作物遗传育种与栽培·种质资源·分子生物学 • 上一篇    下一篇

不同氮效棉花品种植株农艺性状、氮素积累及光合特性差异

娄善伟, 阿斯卡尔·卡地尔, 李杰, 马腾飞, 郭峰, 帕尔哈提·买买提, 张鹏忠   

  1. 国家棉花工程技术研究中心,乌鲁木齐 830091
  • 收稿日期:2019-07-29 出版日期:2019-12-20 发布日期:2019-12-27
  • 作者简介:娄善伟(1982-),男,山东日照人,副研究员,研究方向为棉花栽培生理,(E-mail)wei.lou@163.com
  • 基金资助:
    新疆维吾尔自治区自然科学基金“不同氮效棉花品种植株氮素阈值及其影响因子研究”(2017D01A07)

The Differences in Plant Agronomic Traits, Nitrogen Accumulation and Photosynthetic Characteristics of Cotton Varieties with Different Nitrogen Efficiency

LOU Shan-wei, Asikaer Kadier, LI Jie, MA Teng-fei, GUO Feng, Paerhati Maimaiti, ZHANG Peng-zhong   

  1. The National Engineering Research Center of Cotton, Urumqi 830091, China
  • Received:2019-07-29 Online:2019-12-20 Published:2019-12-27
  • Correspondence author: LOU Shan-wei(1982-), male, Rizhao Ren, Shandong Province, associate researcher, mainly engaged in cotton cultivation physiology and other work,(E-mail) wei.lou@163.com.

摘要: 目的】研究不同氮效品种之间农艺性状,氮素积累及光合特性,为合理施氮提供参考。【方法】以棉花品种新陆早32号(氮高效品种)和新陆早36号(非氮高效品种)为材料,设置240、360 kg/hm2两个氮素水平,寻找差异,优化品种选育,提高氮素效率。【结果】无论在低氮还是高氮条件下,新陆早32号的株高、茎粗和果枝数均高于新陆早36号,分别相差8.34 cm、2.34 mm和1.56台。在氮素积累上,2个品种根的含氮量呈逐渐下降的趋势,但新陆早32号高于新陆早36号;在低氮水平时新陆早32号的茎后期可以积累更多的氮素,与叶片积累相反,而高氮水平时,后期茎的氮素积累相差不大,叶片则一直是新陆早32号含量高,差距保持在3.0 g/kg以上。在光合特性上,新陆早32号的净光合速率、胞间CO2浓度基本高于新陆早36号,而蒸腾速率则相反。【结论】高氮水平下新陆早32号产量最高,为4 022.82 kg/hm2。不同氮水平下氮效品种均有差异,尤其是在低氮条件下,氮高效品种更能有效的利用氮素,保证产量,并在氮充足条件下提高产量。

关键词: 棉花; 品种; 氮效; 积累量

Abstract: Objective】 By studying the differences of agronomic traits, nitrogen accumulation and photosynthetic characteristics among different nitrogen-efficiency varieties, the breeding of varieties was optimized to improve nitrogen efficiency and provide reference for rational nitrogen application.【Method】Using cotton varieties Xinluzao 32 and Xinluzao 36 as experimental materials, two nitrogen levels of 240 and 360 kg/hm2 were set up to study the differences of nitrogen efficiency among different cotton varieties.【Results】The results showed that the plant height, stem diameter and number of fruit branches of Xinluzao 32 were higher than those of Xinluzao 36 under both low and high nitrogen conditions, with a difference of 8.34 cm, 2.34 mm and 1.56 sets, respectively.In terms of nitrogen accumulation, the nitrogen content in roots of the two cultivars decreased gradually, but Xinluzao 32's was higher than that of Xinluzao 36. At low nitrogen level, Xinluzao 32 could accumulate more nitrogen in the later stage of stem, contrary to leaf accumulation. At high nitrogen level, the nitrogen accumulation in the later stage of stem was similar, while Xinluzao 32 had high nitrogen content in leaves, and the difference remained above 3.0 g/kg.In terms of photosynthetic characteristics, the net photosynthetic rate and intercellular carbon dioxide concentration of Xinluzao 32 were higher than those of Xinluzao 36, while the transpiration rate was the opposite.【Conclusion】At high nitrogen level, the yield of Xinluzao 32 was the highest, which was 4 022.82 kg/hm2. Comprehensive analysis showed that the characteristics of different nitrogen-efficiency varieties were different. Especially under low nitrogen conditions, nitrogen-efficient varieties could utilize nitrogen more effectively, ensure yield and increase yield under sufficient nitrogen conditions.

Key words: cotton; varieties; nitrogen efficiency; accumulation

中图分类号: 


ISSN 1001-4330 CN 65-1097/S
邮发代号:58-18
国外代号:BM3342
主管:新疆农业科学院
主办:新疆农业科学院 新疆农业大学 新疆农学会

出版单位:《新疆农业科学》编辑部
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