|Table of Contents|

Effects of Organic Fertilizers Replacing Chemical Nitrogen Fertilizers on the Growth of Apple Trees and the Spatiotemporal Variation of Soil Nutrients

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2024年17
Page:
26-33
Research Field:
Publishing date:

Info

Title:
Effects of Organic Fertilizers Replacing Chemical Nitrogen Fertilizers on the Growth of Apple Trees and the Spatiotemporal Variation of Soil Nutrients
Author(s):
CHEN Yanan1ZHAO Qi1HE Yongbo1LI Qian1CHANG Yuansheng2LI Lei1
(1.College of Horticulture,Shanxi Agricultural University,Taiyuan,Shanxi 030031;2.Linyi County Fruit Industry Development Center,Linyi,Shanxi 044100)
Keywords:
appleorganic-chemical substitutionnutrientspatial and temporal variation
PACS:
S 661.1
DOI:
10.11937/bfyy.20240747
Abstract:
Fifteen-year-old ‘Fuji’ apple trees in a vigorous fruit period were used as the experimental material.The experiment had four organic-chemical replacement treatments with a replacement ratio of 20%,40%,60% and 100%,respectively,with a chemical fertilizer treatment as the control.The effects of organic-chemical replacement on apple tree growth,shoot nutrients and soil nutrient contents were studied,in order to provide reference for scientific fertilization of apple cultivation in Shanxi Province.The results showed that compared with the control,organic-chemical replacement by 40% increased the length of new shoots,the base roughness of new shoots,the number of leaves and the SPAD value of leaves by 24.94%,9.70%,21.35% and 2.27%,respectively.In the same treatment,the single fruit weight was increased by 11.74%,respectively.Organic-chemical replacement by 60% increased total potassium content of new shoots by 81.60%.Both 40% and 100% replacement treatments decreased total nitrogen content in the upper soil (0-40 cm).Compared with the soil basic available potassium content measured before starting the experiment,contents of available potassium in the 0-20 cm soil of the control,40% replacement and 100% replacement treatments decreased by 39.39%,37.28% and 26.98%,respectively.As soil depth increased,content of available phosphorus in the 60-100 cm soil depth of the 40% replacement treatment decreased by 13.91%-44.34%.In summary,organic-chemical replacement was found to promote the growth of apple trees and fruits,and increase soil nutrient utilization efficiency.A replacement by 40% achieved best agronomic and environmental outcomes among all treatments.

References:

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Last Update: 2024-09-24