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[1]ZHAN Yufang,LU Yanfang,ZHEN Weiling,et al.Spatial Distribution Characteristics of Root System of Lycium barbarum L. in Hexi Irrigation Area[J].Research of Soil and Water Conservation,2016,23(04):133-137.

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Spatial Distribution Characteristics of Root System of Lycium barbarum L. in Hexi Irrigation Area

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 23 Number of periods: 2016 04 Page number: 133-137 Column: Public date: 2016-04-28

Title:: Spatial Distribution Characteristics of Root System of Lycium barbarum L. in Hexi Irrigation Area

Author(s):: ZHAN Yufang, LU Yanfang, ZHEN Weiling, DA Shicai; Zhangye Academy of Forestry, Zhangye, Gansu 734000, China

Keywords:: Lycium barbarum L.; root density; root extinction coefficient; Hexi irrigation area

CLC:: Q948.1

DOI:: -

Abstract:: Soil drilling method is used to investigate root distribution characteristics of Lycium barbarum L. in Hexi irrigation area.The results indicated that fine roots, coarse roots concentrated in the soil layer of 20-40 cm; fine and coarse root biomass exponentially decreased with distance increase from the trunk; according to the distribution characteristics of Lycium barbarum L. wolfberry root, the reasonable fertilization methods should be furrow fertilization or ring fertilization,with 30~90 cm away from Lycium barbarum L. trunk and the depth of 30 cm; combining with the tree root extinction coefficient, from the quantitative point of further analysis of the root distribution characteristics of different ages of Lycium barbarum L., it was found that with increase of distance from the stem, the value increased with the increase of the horizontal distance after 3 years, 8 years of Lycium barbarum L., the maximum values of root extinction coefficient occurred in the site 60 cm away from the stem, which were 0.960 3 and 0.984 0, respectively;the crude Lycium barbarum L. root β value increased with the increase of distance from the stem, the distribution of range was wide in the site 90 cm away from the stem, which played the very important role in regulating water and nutrients in the trees. The β value of fine root was greater than that of the thick root, fine root distribution was deeper than coarse root in the vertical direction, the ability of the fine root to absorb the deep soil water and nutrient was greater, the distribution characteristics expanded space and was conducive to Lycium barbarum L., trees to absorb the deep water and nutrients, and promote the growth of ground parts and tree development.

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