欢迎访问《植物研究》杂志官方网站,今天是 分享到:

植物研究 ›› 2021, Vol. 41 ›› Issue (5): 712-720.doi: 10.7525/j.issn.1673-5102.2021.05.009

• 研究报告 • 上一篇    

绿色环保肥料增效剂聚天冬氨酸对杨树幼苗生长的影响

曹丹, 王世震, 韩梅()   

  1. 南京林业大学生物与环境学院,南方现代林业协同创新中心,南京 210037
  • 收稿日期:2020-12-10 出版日期:2021-09-20 发布日期:2021-07-05
  • 通讯作者: 韩梅 E-mail:sthanmei@njfu.edu.cn
  • 作者简介:曹丹(1996—),女,硕士研究生,主要从事植物生化与分子生物学研究。
  • 基金资助:
    国家自然科学基金项目(31700525);江苏高校优势学科建设工程项目

Effect of the Environment-friendly Nutrient Synergist Polyaspartic Acid on the Growth of Poplar Seedlings

Dan CAO, Shi-Zhen WANG, Mei HAN()   

  1. College of Biology and the Environment,Co-Innovation Center for Sustainable Forestry in Southern China,Nanjing Forestry University,Nanjing 210037
  • Received:2020-12-10 Online:2021-09-20 Published:2021-07-05
  • Contact: Mei HAN E-mail:sthanmei@njfu.edu.cn
  • About author:CAO Dan(1996—),femal,master student,majoring in plant biochemistry and molecular biology.
  • Supported by:
    National Natural Science Foundation of China(31700525);The Priority Academic Program Development of Jiangsu Higher Education Institutions(PAPD)

摘要:

聚天冬氨酸(PASP)是一种环境友好型高分子氨基酸聚合物,具有肥料增效剂和缓释剂的作用。本研究通过对水培“南林895杨”幼苗设置不同浓度氮和PASP共12个梯度处理,探讨PASP在木本植物杨树中的增效作用和机制。研究发现,在氮供应不足时,营养液中添加一定的PASP促进了杨树幼苗株高、叶片数、地上部分鲜重和氮的利用效率的增加,降低了杨树幼苗根冠比和硝态氮含量。而在高氮条件下施加PASP效果不显著甚至会加重高氮胁迫,抑制植物生长。这些研究结果表明,PASP可以用作杨树的肥料增效剂,添加适量PASP有望在实际生产中促进低氮条件生长的杨树生物量的增加。

关键词: 南林895杨, 聚天冬氨酸, 硝酸还原酶, 天冬氨酸转氨酶, 氮利用效率

Abstract:

Polyaspartic acid(PASP) is an environment-friendly polymeric substance that has been frequently used as fertilizer synergist and sustained release agent in agriculture. In order to investigate the effects of PASP on nitrogen uptake and utilization in poplar seedlings, 12 gradient treatments of different concentrations of nitrogen and PASP were set in the hydroponic-grown poplar hybrid ‘Nanlin 895’ seedlings. The results showed that the addition of PASP in nutrient solution had an obvious promoting effect on poplar growth and development when nitrogen supply was inadequate, and it improved the plant height, number of leaves and shoot biomass and the utilization efficiency of nitrogen, whereas the root to shoot ratio and nitrate concentration in seedlings was decreased. However, the exogenous supplement of PASP aggravated the stress of high nitrogen under the condition of high nitrogen. The results demonstrated that PASP could be used as fertilizer synergist for poplar, and the appropriate addition of PASP under insufficient nitrogen conditions would promote growth performance of poplar seedlings.

Key words: poplar hybrid ‘Nanlin 895’, polyaspartic acid, nitrate reductase, aspartate aminotransferase, nitrogen use efficiency

中图分类号: