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Chinese Agricultural Science Bulletin ›› 2020, Vol. 36 ›› Issue (5): 53-59.doi: 10.11924/j.issn.1000-6850.casb18090027

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Stumping of Caragana korshinskii Kom During Growth Period: Effects on the Storage of Nutrients in Roots

Wen Xuefei   

  1. Institute of Desertification Control, Ningxia Academy of Agriculture and Forestry Sciences/Key Laboratory of Sand Control and Soil and Water Conservation in Ningxia, Yinchuan 750002
  • Received:2018-09-06 Revised:2019-04-18 Online:2020-02-15 Published:2020-02-21

Abstract:

The paper aims to study the effects of stumping on the storage of conventional nutrients and soluble nutrients in the roots of Caragana korshinskii Kom in different months. The author determined the conventional nutrients by the feed monitoring method and the soluble nutrients by referring to the Phytophysical Experiment Guide and Plant Physiology and Biochemistry Experiment Principles and Techniques. The results showed that: with the delay of the stumping time, the protein content of the roots of Caragana korshinskii Kom decreased gradually, and the interaction between starch and fat was coordinated to maintain life or regeneration; soluble carbohydrates were the main storage nutrients of Caragana korshinskii Kom roots which was sensitive to the response of Caragana korshinskii Kom in different months; the ratio of soluble sugar to soluble starch increased gradually with the increase of the month which was beneficial to the plant against frost damage; simultaneously, stumping in the germination period and the first frost period had a greater influence on the nutrients of Caragana korshinskii Kom roots. In summary, the best time for stumping of Caragana korshinskii Kom during growth period should be from April to August.

Key words: Caragana korshinskii Kom, root, stumping, nutrients, growth period

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