| Analysis of the soil texture and fertility status of hillside close-planting jujube field on the Loess Plateau |
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| DOI：10.7606/j.issn.1000-7601.2009.03.32 |
| Key Words: hillside field jujube soil texture soil fertility Loess Plateau |
| Author Name | Affiliation | | YAN Yadan | Institute of Soil and Water Conservation Chinese Academy of Sciences and Ministry of Water Resource, Yangling, Shaanxi 712100, China；Graduate University of Chinese Academy of Sciences, Beijing 100049, China | | JIANG Zhongbo | Northwest A ＆ F University, Yangling, Shaanxi 712100, China | | XU Fuli | Institute of Soil and Water Conservation Chinese Academy of Sciences and Ministry of Water Resource, Yangling, Shaanxi 712100, China；Northwest A ＆ F University, Yangling, Shaanxi 712100, China | | WANG Youke | Institute of Soil and Water Conservation Chinese Academy of Sciences and Ministry of Water Resource, Yangling, Shaanxi 712100, China；Northwest A ＆ F University, Yangling, Shaanxi 712100, China | | ZOU Cheng | Institute of Soil and Water Conservation Chinese Academy of Sciences and Ministry of Water Resource, Yangling, Shaanxi 712100, China；Graduate University of Chinese Academy of Sciences, Beijing 100049, China |
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| Abstract: |
| Study was made on the soil texture and fertility status of hillside close-planting jujube field on the Loess Plateau.The results displayed: The soil appears low-fertility due to serious lack of N, P but K;The soil is sandy loam that has good soil aeration but bad water and nutrient retention.The content of soil nutrients of 0～60 cm is as follows: organic matter: 1.687～5.002 mg·kg-1, total N: 0.072～0.316 g·kg-1, NO-3-N: 2.325～16.846 g·kg-1, NH+4-N: 1.187～2.146 g·kg-1, avail-P: 0.270～2.480 mg·kg-1, avail-K: 51.9～169.1 mg·kg-1. All of them above decrease gradually with the decreasing of soil profile.The soil particle is silt particle and the content is generally 65.75%～68.98%.With the increasing of content of organic matters, the 0.25～0.05 mm microaggregate reduced but <0.05 mm microaggregate increased.The fertility status of jujube close planting in hillside field on the Loess Plateau was on the low side as a whole.All the nutrients content was lower except avail-K was on a middle grade. |
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