|Table of Contents|

Characterstics of Root Distribution and Wetting Body of Infiltration With Different Flow Rate for ‘Korla Pear’

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2021年04
Page:
10-16
Research Field:
Publishing date:

Info

Title:
Characterstics of Root Distribution and Wetting Body of Infiltration With Different Flow Rate for ‘Korla Pear’
Author(s):
JI Guangpeng1JIANG Jiyuan2NIU Linglei1ZHANG Donghai1ZHAO Sifeng3WU Yurong1
(1.Institute of Agriculture Science and Technology,Division No.3 of Xinjiang Production and Construction Group,Tumisuke,Xinjiang 843900;2.Xinjiang Academy of Agricultural and Reclamation Science,Shihezi,Xinjiang 832000;3.Agricultural College,Shihezi University,Shihezi,Xinjiang 832000)
Keywords:
‘Korla Pear’root distribution characteristicsdripper flowsoil wetting body characteristicssoil water content
PACS:
-
DOI:
10.11937/bfyy.20202207
Abstract:
The aim of this study was to investigate wetting body characterstics of infiltration with different flow rate and characterstics of root distribution for ‘Korla Pear’,analyze the high degree of agreement between the characteristics of soil moisture front transport and root distribution with time,screen the best dripper flow and the most suitable irrigation time.The profile grid sampling method was used to investigate the horizontal and vertical distribution characteristics of the root length density of ‘Korla Pear’,explore the depth,breadth and concentrated distribution area of the root distribution of ‘Korla Pear’.Through the section grid method,monitor the water content of the infiltration body of five kinds of dripper flow every hour,according to the degree of coincidence between the moist front movement characteristics and the concentrated distribution area of ‘Korla Pear’,select the best dripper flow rate and the most suitable drip irrigation time for water-saving irrigation.The results showed that the vertical distribution area of ‘Korla Pear’ in the vertical growth period was 20-60 cm,and the horizontal distribution area was 50-80 cm.In the area where the pear roots were concentrated in the horizontal direction.The treatment with a dripper flow rate of 9.2 L?h-1 could make the water move smoothly migrate from downward to both sides of the dripper,it was estimated that five hours after the start of drip irrigation,the horizontal profile in the vertical range of 0-80 cm would be saturated.In the area where the pear roots were concentrated vertically.The treatment with the dripper flow rate of 9.2 L?h-1could make the water move from the surface layer to the lower layer more smoothly,five hours after the start of drip irrigation,the vertical profile in the 0-100 cm horizontal range would reach saturation.The law of horizontal and vertical migration of soil moistening body under different dripper flow,it was recommended to use the dripper flow rate of 9.2 L?h-1 for drip irrigation in this plot.The best dripping time was five hours.

References:

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Last Update: 2021-06-04