Journal of Integrative Agriculture ›› 2013, Vol. 12 ›› Issue (2): 344-351.DOI: 10.1016/S2095-3119(13)60234-8

• 论文 • 上一篇    下一篇

Spatial Distribution of Soil Organic Matter and Nutrients in the Pear Orchard Under Clean and Sod Cultivation Models

 XU Ling-fei, ZHOU Peng, HAN Qing-fang, LI Zhi-hui, YANG Bao-ping , NIE Jun-feng   

  1. 1.College of Horticulture, Northwest A&F University, Yangling 712100, P.R.China
    2.Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest China, Ministry of Agriculture, Yangling 712100,P.R.China
    3.Key Laboratory of Crop Production and Ecology, Minister of Agriculture, Yangling 712100, P.R.China
  • 收稿日期:2012-02-13 出版日期:2013-02-01 发布日期:2013-02-06
  • 通讯作者: Correspondence XU Ling-fei, Tel: +86-29-87082150, E-mail: lingfxu@yahoo.com.cn
  • 基金资助:

    This research was supported by the China Agriculture Research System (CARS-29-40).

Spatial Distribution of Soil Organic Matter and Nutrients in the Pear Orchard Under Clean and Sod Cultivation Models

 XU Ling-fei, ZHOU Peng, HAN Qing-fang, LI Zhi-hui, YANG Bao-ping , NIE Jun-feng   

  1. 1.College of Horticulture, Northwest A&F University, Yangling 712100, P.R.China
    2.Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest China, Ministry of Agriculture, Yangling 712100,P.R.China
    3.Key Laboratory of Crop Production and Ecology, Minister of Agriculture, Yangling 712100, P.R.China
  • Received:2012-02-13 Online:2013-02-01 Published:2013-02-06
  • Contact: Correspondence XU Ling-fei, Tel: +86-29-87082150, E-mail: lingfxu@yahoo.com.cn
  • Supported by:

    This research was supported by the China Agriculture Research System (CARS-29-40).

摘要: The soil organic matter and nutrients are fundamental for the sustainability of pear production, but little is known about the spatial distribution of soil organic matter and nutrients in a pear orchard. With the soil of the pear (cv. Dangshansu on P.betulifolia Bunge. rootstock) orchard under clean and sod cultivation models as test materials, the experiment was conducted to evaluate spatial variability of soil organic matter (SOM), total nitrogen (STN), total phosphorus (STP), total potassium (STK), available nitrogen (SAN), and available potassium (SAK) in and between rows at different soil depths (0-60 cm). The SOM, STN, STP, STK, SAN and SAK of the different soil layers under the two tillage models were different in the vertical direction. The SOM, STN, STP and SAN in the 0-20 cm soil layer were higher than those in the 20-40 and 40- 60 cm soil layers. The STK of 40-60 cm soil layer was higher than that in the 0-20 and 20-40 cm soil layers. The STK increased with the depth of soil in the vertical direction in the clean cultivated pear orchard. Variability of the SOM, STN, STP, STK, SAN and SAK of sample sites in between rows of the same soil layer was found in the pear orchard soil in the horizontal direction under clean and sod cultivation management systems, except that STK of all sites did not show the difference in identical soil layers in the pear orchard under clean cultivation. The sod cultivation model improved the SOM, STN, and STK in the 0-20 cm soil layer in the pear orchard, and the three components increased by 12.8, 12.7 and 7.3% compared to clean cultivation, respectively. The results can be applicable to plan collection of orchard soil samples, assess orchard soil quality, and improve orchard soil management practices.

关键词: spatial distribution , soil organic matter , soil nutrients , clean cultivation , sod cover , pear orchard

Abstract: The soil organic matter and nutrients are fundamental for the sustainability of pear production, but little is known about the spatial distribution of soil organic matter and nutrients in a pear orchard. With the soil of the pear (cv. Dangshansu on P.betulifolia Bunge. rootstock) orchard under clean and sod cultivation models as test materials, the experiment was conducted to evaluate spatial variability of soil organic matter (SOM), total nitrogen (STN), total phosphorus (STP), total potassium (STK), available nitrogen (SAN), and available potassium (SAK) in and between rows at different soil depths (0-60 cm). The SOM, STN, STP, STK, SAN and SAK of the different soil layers under the two tillage models were different in the vertical direction. The SOM, STN, STP and SAN in the 0-20 cm soil layer were higher than those in the 20-40 and 40- 60 cm soil layers. The STK of 40-60 cm soil layer was higher than that in the 0-20 and 20-40 cm soil layers. The STK increased with the depth of soil in the vertical direction in the clean cultivated pear orchard. Variability of the SOM, STN, STP, STK, SAN and SAK of sample sites in between rows of the same soil layer was found in the pear orchard soil in the horizontal direction under clean and sod cultivation management systems, except that STK of all sites did not show the difference in identical soil layers in the pear orchard under clean cultivation. The sod cultivation model improved the SOM, STN, and STK in the 0-20 cm soil layer in the pear orchard, and the three components increased by 12.8, 12.7 and 7.3% compared to clean cultivation, respectively. The results can be applicable to plan collection of orchard soil samples, assess orchard soil quality, and improve orchard soil management practices.

Key words: spatial distribution , soil organic matter , soil nutrients , clean cultivation , sod cover , pear orchard