Cultivation of Caragana Korshinskii in Southeastern Edge of Tengger Desert

Tang Ximing; Li Minlan; Qu Jianjun; Song Naiping; Meng Chen

doi:10.13961/j.cnki.stbctb.2021.02.018

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Cultivation of Caragana Korshinskii in Southeastern Edge of Tengger Desert

- Cultivation of Caragana Korshinskii in Southeastern Edge of Tengger Desert
- Bulletin of Soiland Water Conservation Vol. 41, Issue 2, Pages: 135-141(2021)
- 作者机构：
  
  1. 中卫市自然资源局中卫市治沙林场, 宁夏中卫 7550001
  2. 宁夏大学西北土地退化与生态恢复国家重点实验室培育基地,宁夏,银川,750021
  3. 中国科学院西北生态环境资源研究院敦煌戈壁荒漠生态与环境研究站/沙漠与沙漠化重点实验室,甘肃,兰州,730000
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2021.02.018
  CLC： S728.3
- Published：2021
- 稿件说明：
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Tang Ximing, Li Minlan, Qu Jianjun, et al. Cultivation of Caragana Korshinskii in Southeastern Edge of Tengger Desert[J]. Bulletin of Soiland Water Conservation, 2021, 41(2): 135-141.
DOI：

Tang Ximing, Li Minlan, Qu Jianjun, et al. Cultivation of Caragana Korshinskii in Southeastern Edge of Tengger Desert[J]. Bulletin of Soiland Water Conservation, 2021, 41(2): 135-141. DOI： 10.13961/j.cnki.stbctb.2021.02.018.

摘要

[目的] 探究在腾格里沙漠东南缘应用沙漠造林器栽植苗木的保水效果，观测其沙漠造林器是否更有利于苗木成活，同时为提高沙漠地区苗木栽植成活率提供科学支持。[方法] 通过采用对比两种栽植方式（铁锹和沙漠造林器）下不同土层土壤含水量，并使用相应公式计算，从土壤有效含水量、土壤水分亏缺程度、土壤水分变异系数等方面进行综合分析，评定哪种栽植方式更好。[结果] ①在草方格内进行人工栽植，采用沙漠造林器会大大降低各土层土壤水分的损耗风险，并且造林器作用下的土壤含水量均高于铁锹，最高达1.42倍，最低是1.04倍。②两种栽植方式深度不同，以致柠条根系所在土层不同，进而对水分的利用策略不同。铁锹组柠条主要利用15—40 cm土层土壤水，造林器组柠条主要利用20—50 cm土层土壤水。造林器组柠条根系所对应的土层土壤水分亏缺程度较轻，更有利于柠条的初期生长。③铁锹栽植苗木成活率为45%～55%，沙漠造林器栽植苗木成活率为70%～75%，提高了25%左右。沙漠造林器栽植苗木成活率更高。[结论] 从土壤水分保持以及对应的所栽柠条成活率等方面综合来看，相比铁锹栽植，使用沙漠造林器栽植柠条效果更好。

Abstract

[Objective] The water retention effect of planting seedlings with desert planters on the southeastern edge of the Tengger Desert was explored to observe whether the desert planters are more conducive to the survival of seedlings

in order to provide scientific support for improving the survival rate of seedlings in desert areas.[Methods] Soil water content of different soil layers under two planting methods (shovel and desert afforestation device) was compared. The corresponding formula was used to calculate effective soil water content

soil water deficit degree and soil moisture variation coefficient

to comprehensively assess which planting method was better.[Results] ① The risk of soil moisture loss in each soil layer could be greatly reduced by using desert afforestation devices in grass square

and the soil moisture content under the action of afforestation devices was higher than that of shovel

with the highest being 1.42 times and the lowest being 1.04 times. ② The depths of the two planting methods were different

so that the roots of Caragana korshinskii distributed differently in soil layers

and thus the water use strategies were different. Caragana korshinskii in the shovel group mainly used soil water in the 15-40 cm soil layer

while Caragana korshinskii in the afforestation group mainly used soil water in the 20-50 cm soil layer. The soil moisture deficit of Caragana korshinskii roots in the afforestation group was less

which was more conducive to the initial growth of Caragana korshinskii. ③ In terms of the survival rate of planted seedlings

the survival rate of seedlings planted by shovel was 45%-55%; the survival rate of seedlings planted by desert afforestation tools was 70%-75%

which was increased by about 25%. The survival rate of seedlings planted by desert afforestation tools was higher.[Conclusion] According to soil moisture retention and the survival rate of the planted Caragana korshinskii

compared with shovel planting

the effect of planting Caragana korshinskii with desert afforestation equipment is better.

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