[1]Wang Dawei,Chen Dongkai,Luo Han,et al.Spatial Characteristics of Soil Moisture in Dense Planting Dwarf Rootstock Apple Orchards with Different Tree Ages in Weibei Dry Highland[J].Research of Soil and Water Conservation,2024,31(06):188-198.[doi:10.13869/j.cnki.rswc.2024.06.033]
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
31
Number of periods:
2024 06
Page number:
188-198
Column:
Public date:
2024-12-10
- Title:
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Spatial Characteristics of Soil Moisture in Dense Planting Dwarf Rootstock Apple Orchards with Different Tree Ages in Weibei Dry Highland
- Author(s):
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Wang Dawei1,2,3, Chen Dongkai4, Luo Han2,4, Xie Yongsheng2,4,5
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(1.Research Center of Soil and Water Conservation and Ecological Environment, Chinese Academy of Sciences and Ministry of Education, Yangling, Shaanxi 712100, China; 2.Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi 712100, China; 3.University of Chinese Academy of Sciences, Beijing 100049, China; 4.College of Soil and Water Conservation Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100...)
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- Keywords:
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Weibei dry highland; dwarf rootstock dense planting; apple orchards; soil moisture; spatial distribution
- CLC:
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S661.1; S152.7
- DOI:
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10.13869/j.cnki.rswc.2024.06.033
- Abstract:
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[Objective]The aims of this study are to enhance soil water utilization efficiency, to provide a reference for water management in dense planting dwarf rootstock apple orchards, and to realize the sustainable and high-quality development of orchards. [Methods]The space-time substitution method was employed to regularly collect soil samples of 0—300 cm from 6-year-old, 9-year-old, and 12-year-old orchards through artificial drilling. Soil moisture conditions at different spatial positions such as under trees, between plants, midpoints and rows were consistently monitored to reveal the characteristics of soil moisture changes in orchards with varying tree ages and spatial positions. [Results](1)Vertically, significant differences existed in soil moisture content among orchards of different ages during pre-rainy season periods, mid-rainy season periods and post-rainy season periods. The trend of soil moisture content exhibited a ‘decrease-increase-decrease-increase' shape with the depth.(2)Horizontally, the distribution characteristics of soil moisture content in orchards of different ages during pre-rainy season, mid-rainy season, and post-rainy seasons were similar. Specifically, the moisture content under trees was significantly lower than between plants, between rows, and at intermediate points. Especially, the shallow layer(0—60 cm)and middle layer(60—160 cm)of soil under trees experienced the most water loss. [Conclusion]The period before rainy season(March—July)is the most serious period of water deficit in dense planting dwarf rootstock apples. Timely artificial irrigation should be carried out. The main water absorption parts of apple trees are the shallow layer(0—60 cm)and the middle layer(60—160 cm)of the soil under the tree. The irrigation in the soil under the tree should be strengthened.