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FOREST RESOURCES WANAGEMENT ›› 2023›› Issue (1): 94-103.doi: 10.13466/j.cnki.lyzygl.2023.01.012

• Scientific Research • Previous Articles     Next Articles

Effects of Different Fertilization Measures on the Growth Characteristics of Catalpa bignonioides

LI Zhi(), ZHOU Huina, WANG Yange, LIU Zhen, WANG Yanmei, LI Mingwan, BI Huitao()   

  1. College of Forestry,Henan Agricultural University,Zhengzhou 450002,China
  • Received:2022-10-26 Revised:2023-02-18 Online:2023-02-28 Published:2023-05-05

Abstract:

The effects of different fertilization measures on the growth characteristics of Catalpa bignonioides seedlings were studied to provide theoretical basis for fertilizer supply of Catalpa bignonioides seedlings.Three month old Catalpa bignonioides seedlings with good and even growth were used as materials,part of "3414" scheme was used to design test:three kinds of inorganic fertilizers,including N,P and K,were combined with biochar organic fertilizer,with a total of 8 treatments and 3 fertilization measures:indifferent levels of N,P and K,deficiency of different N,P and K fertilizers and biochar addition,the changes of growth indexes and chlorophyll content(SPAD value) of Catalpa bignonioides seedlings were analyzed.The results showed that:compared with P and k elements,Catalpa bignonioides needed more nitrogen regulation.Reasonable fertilization could promote the growth and development of Catalpa bignonioides seedlings.The fertilization ratio of N,P and K is 8g/plant,4g/plant and 6g/plant,can be used as a nutrient supply plan for the cultivation of Catalpa bignonioides seedlings.

Key words: fertilizers, biochar fertilizer, Catalpa bignonioides, growth index, chlorophyll content

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