|Table of Contents|

Study on the Microchange Rule of Stem Diameter of ‘Yellow Crown’ Pear Trees

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2019年07
Page:
10-16
Research Field:
Publishing date:

Info

Title:
Study on the Microchange Rule of Stem Diameter of ‘Yellow Crown’ Pear Trees
Author(s):
CHENG Xuan; WANG Qingjiang; CHENG Fuhou
(College of Landscape and Ecological Engineering,Hebei University of Engineering,Handan,Hebei 056001)
Keywords:
pear tree; stem diameter; maximum daily shrinkage; daily increase; soil water potential
PACS:
-
DOI:
10.11937/bfyy.20183010
Abstract:
Using the ‘Yellow Crown’ pear tree as the test material,the stem diameter,the soil water potential (SWP) and the air temperature (T) were continuously monitored.The micro variation of the stem diameter of the pear trees was studied.The results showed that the diurnal variation trend of the full water treatment (Well-irrigation,WI) and the gradual drought treatment (Gradual-drought,GD) was obviously different,and the maximum daily shrinkage(MDS) treated by GD was obviously smaller than that of WI treatment.The maximum stem diameter(MXSD) of GD showed a parabolic trend which rose first and then decreased as time went on;with the decrease of SWP,the MDS,the daily growth (DI) and the daily recovery time (RT) and the SWP were a good linear relationship,positive slope and negative slope;the MDS treated by GD had a significant positive correlation with the daily mean temperature (T),air relative humidity (RH) and light intensity (L),while the MDS in WI treatment was negatively correlated with T,RH and L.The DI treated by WI was not affected by RH,L and wind speed,but it was negatively correlated with T,and the DI treated by GD was not affected by RH and wind speed,but it was significantly influenced by T and L,which was negative correlation.In GD treatment,the linear relationship between SWP and DI was more practical,and DI could be used as an index to guide pear irrigation.

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Last Update: 2019-04-30