PT菌剂对陕北黄土区土壤性质和油松苗木的影响

于海艳; 张国全; 孙宾; 聂立水; 朱清科

doi:10.13961/j.cnki.stbctb.2016.05.015

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PT菌剂对陕北黄土区土壤性质和油松苗木的影响

试验研究

- PT菌剂对陕北黄土区土壤性质和油松苗木的影响
- Effect of Pisolithus Tinctorius Inoculant on Soil Properties and Pinus Tabulaeformis Seedlings in Northern Shaanxi Loess Plateau
- 水土保持通报 2016年36卷第5期页码：46-50
- 作者机构：
  
  1. 北京林业大学林学院,北京,100083
  2. 北京林业大学水土保持学院,北京,100083
- 作者简介：
- 基金信息：
  
  林业公益性行业科研专项课题“黄土丘陵严重侵蚀区植被恢复和重建技术研究”（201104002-2）
- DOI：10.13961/j.cnki.stbctb.2016.05.015
  中图分类号：
- 纸质出版：2016
- 稿件说明：
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于海艳, 张国全, 孙宾, 等. PT菌剂对陕北黄土区土壤性质和油松苗木的影响[J]. 水土保持通报, 2016,36(5):46-50.

YU Haiyan, ZHANG Guoquan, SUN Bin, et al. Effect of Pisolithus Tinctorius Inoculant on Soil Properties and Pinus Tabulaeformis Seedlings in Northern Shaanxi Loess Plateau[J]. Bulletin of Soiland Water Conservation, 2016, 36(5): 46-50.
于海艳, 张国全, 孙宾, 等. PT菌剂对陕北黄土区土壤性质和油松苗木的影响[J]. 水土保持通报, 2016,36(5):46-50. DOI： 10.13961/j.cnki.stbctb.2016.05.015.

YU Haiyan, ZHANG Guoquan, SUN Bin, et al. Effect of Pisolithus Tinctorius Inoculant on Soil Properties and Pinus Tabulaeformis Seedlings in Northern Shaanxi Loess Plateau[J]. Bulletin of Soiland Water Conservation, 2016, 36(5): 46-50. DOI： 10.13961/j.cnki.stbctb.2016.05.015.

摘要

[目的] 分析PT菌剂对陕北黄土区土壤性质和油松苗木的影响，为干旱和半干旱黄土高原植被恢复提供科学依据。[方法] 在陕西黄土高原丘陵区采用完全随机区组试验（2013年3-10月），以常规施肥为对照，以上、中、下3个坡位为区组，研究施用PT菌剂对6年生油松苗木地径、树高、成活状况以及0-60 cm这3个不同层次土壤主要养分含量的影响。[结果] 施用PT菌剂油松地径平均生长量为4.5 mm，是对照的2倍；树高总生长量达10 cm，比对照高54%；油松死亡率比对照低9%。施用PT菌剂后土壤有机质含量平均达到7.8 g/kg，是对照的2倍多；土壤全氮的含量平均为0.41 g/kg，比对照高52%；速效钾的含量平均达到42.4 mg/kg，比对照增加了26%；PT菌剂对有效磷提高不明显；坡位对油松地径和树高影响不显著，对各层次土壤养分性质有显著影响。[结论] PT菌剂能改善造林地土壤性质，促进油松成活和生长，建议在黄土高原地区油松造林实践中施用PT菌剂。

Abstract

[Objective] The aim of this study is to analyze the effect of Pisolithus tinctorius(PT) inoculant on soil properties and Pinus tabulaeformis seedlings

in order to provide a scientific basis for vegetation restoration in arid and semi-arid Loess Plateau.[Methods] Field experiments were conducted on a newly established 6 a P. tabulaeformis seedlings site at three slope positions(upper

middle

lower) from March to October in 2013 in the Northern Shaanxi loess plateau region. The conventional fertilization was used as control(CK).The effects of PT inoculants on ground diameter

height and growth and survival rate of the 6-year seedlings and soil nutrient contents at different depths (0-60 cm) were investigated.[Results] The average increment of P. tabulaeformis seedlings treated with PT was 4.5 mm

which was 2 times than the control group. The total tree height was 10 cm

which was 54% higher than the control group. The mortality rate was 9% lower than the control group. With the application of PT inoculant

the average organic matter content reached to 7.8 g/kg

which was 2 times higher than the CK. The average total nitrogen content was 0.41 g/kg

and the available potassium was 42.4 mg/kg

which was 52% and 26% higher than that of CK

respectively. There was no significant difference in available phosphorus between PT inoculant treatment and CK. Slope position did not show significant effects on the base diameter and seedling height

but showed remarkable effects on the content of soil organic matter

total nitrogen

and available potassium.[Conclusion] PT inoculant can improve soil properties

increase the survival rate and growth of P. tabulaeformis seedlings. PT inoculant can be used in the P. tabulaeformis seedling afforestation practice in Loess Plateau.

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