|Table of Contents|

Effects of Different Pruning on the Microenvironment of Precocious Walnut in Xinjiang

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2025年4
Page:
60-67
Research Field:
Publishing date:

Info

Title:
Effects of Different Pruning on the Microenvironment of Precocious Walnut in Xinjiang
Author(s):
ZHANG Hui1; 2; HAN Liqun2; MA Kai2; ZHAO Yu2; LIU Liqiang1
(1.College of Horticulture，Xinjiang Agricultural University，Urumqi，Xinjiang 830052；2.Horticultural Crops Research Institute，Xinjiang Academy of Agricultural Sciences，Urumqi，Xinjiang 830091)
Keywords:
walnut; pruning; photosynthetic ability; light intensity
PACS:
S 664.1
DOI:
10.11937/bfyy.20243300
Abstract:
Taking 15-year-old ‘Xinxin 2’ walnut as the test material，different degrees of pruning mode was used,the effects of different degrees of pruning on the illumination，temperature and humidity，photosynthetic characteristics (net photosynthetic rate，stomatal conductivity，transpiration rate，intercellular CO2 concentration) and relative chlorophyll content (SPAD value) of leaves in the delayed-open central leader shape and natural open center shape were studied,in order to provide reference for the rationalization of walnut pruning.The results showed that the light intensity and relative humidity inside the delayed-open central leader shape and natural open center shape were in the order of heavy shear treatment>light shear treatment>CK,and the temperature was all CK>light shear treatment>heavy shear treatment;two tree shapes of net photosynthetic rate were bimodalcurves，delayed-open central leader shape was unimodalcurves，natural open center shape was bimodalcurves，and control treatments was unimodalcurves.The daily variation curve of stomatal conductivity and transpiration rate was basically consistent with the daily variation curve of net photosynthetic rate.The CO2 concentrations in both trees decreased and were heavy shear treatment>light shear treatment>CK.The relative chlorophyll content of both trees was heavy shear treatment>light shear treatment>CK.The pruning of different degrees of delayed-open central leader shape and natural open center shape could obviously affect the environmental factors in the crown and then change the photosynthetic ability.The heavier the pruning degree，the more obvious the effect.

References:

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Last Update: 2025-02-28