Comparison of the effects of fertilizer and Polygonum cuspidatum residue on the growth and development of 27-month-old Polygonum cuspidatum

doi:10.14088/j.cnki.issn0439-8114.2025.08.022

Abstract

Abstract: In 2022, using Polygonum cuspidatum residue and chemical fertilizer potassium sulfate as base fertilizers respectively, after 27 months of field cultivation, the above-ground agronomic traits, single leaf surface area, stomatal number, medicinal component content of the root system, and soil water-soluble aggregates of Polygonum cuspidatum were determined. The fresh and dry weights of the above-ground parts were measured, and the proportion of each part was calculated to analyze the effects of chemical fertilizer potassium sulfate or Polygonum cuspidatum residue on Polygonum cuspidatum cultivation. The results showed that compared with the no-fertilization treatment(CK + seed stems), both chemical fertilizer potassium sulfate and Polygonum cuspidatum residue significantly promoted the dry weight of above-ground stems and leaves, plant height, stem diameter, number of main stem nodes, number of leaves, and total branches of Polygonum cuspidatum. Additionally, Polygonum cuspidatum residue also significantly promoted the above-ground fresh weight, single leaf surface area, and single leaf stomatal number of Polygonum cuspidatum, while chemical fertilizer potassium sulfate only significantly promoted the fresh weight of leaves and branches of Polygonum cuspidatum. In addition, the content of polydatin in the root system of 27-month-old Polygonum cuspidatum met the pharmacopoeial standards, but the contents of emodin and resveratrol did not meet the relevant standards. There was no significant difference in soil water-soluble aggregates in the root system of 27-month-old Polygonum cuspidatum, and only the 2~4 mm aggregate content in rhizosphere soil and MWD (mean weight diameter) of Polygonum cuspidatum seedlings cultivated under the condition of Polygonum cuspidatum residue were larger. Polygonum cuspidatum residue could be used as base fertilizer for returning to the field, and its effect was better than that of chemical fertilizer potassium sulfate.

Key words: fertilizer, Polygonum cuspidatum residue, returning to field for utilization, agronomic traits, comparison

CLC Number:

S567.22
S6-3

ZHANG Ze-zhi, SHANG Fang, LIU Shu, FENG Hai-dong. Comparison of the effects of fertilizer and Polygonum cuspidatum residue on the growth and development of 27-month-old Polygonum cuspidatum[J]. HUBEI AGRICULTURAL SCIENCES, 2025, 64(8): 147-151.

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