Sulfur nutrition status in trees and soils of 'Guanximiyou' pomelo orchards.
Sulfur nutrition status in trees and soils of 'Guanximiyou' pomelo orchards.
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DOI：
10.13925/j.cnki.gsxb.20190606
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发表时间：
2020-01-01
影响因子：
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通讯作者：
Li, Y.
中科院分区：
文献类型：
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作者：
Lin, Wei-jie;Li, Xinbo;Li, Y.
研究结果为合理使用含硫化肥提供了理论和实践依据。分析了蜜柚果园土壤硫含量状况、土壤硫分布特征及影响土壤硫含量的因素。中国从福建省平和县10个蜜柚主产镇(文峰、岐岭、芦溪、九峰、南胜、国强、板仔、上阁、下寨、小溪)中选取了314个具有代表性的蜜柚果园进行土壤和叶片样品采集。为探讨速效硫在土壤剖面中的分布特征，选取27个种植年限在15年以上的蜜柚果园，在距冠层滴线内侧10 cm处采集了0~20 cm、20~40 cm、40~60 cm 3个土层的土壤样品，以避开施肥沟。共采集了81个蜜柚园土壤剖面样品。风干后，将土壤样品轻轻研磨、筛分(0.850 mm和0.150 mm)并妥善储存，然后进行分析。此外，还从平和县市场上采集了55个市售有机肥样品，进行了干重全硫含量的测定。平和县蜜柚果园存在土壤和叶片含硫量超标问题。土壤有效硫的增加导致土壤酸化。硫磺在土壤中容易淋失，这促进了土壤中钙和镁的淋失。平和县应控制含硫化肥的使用。
This paper presents the results of a study conducted to provide theoretical and practical basis for the rational application of sulfur-containing fertilizers. The soil sulfur content status, soil sulfur distribution characteristics and factors affecting sulfur content in honey pomelo ('Guanximiyou') orchards were analyzed. A total of 314 representative honey pomelo orchards for soil and leaf sample collection were selected from 10 major pomelo producing towns (Wenfeng, Qiling, Luxi, Jiufeng, Nansheng, Guoqiang, Banzai, Shange, Xiazhai and Xiaoxi) in Pinghe county, Fujian province, China. To explore the distribution characteristics of available sulfur in the soil profile, 27 honey pomelo orchards with planting years of 15 or more were selected, and soil samples from three soil layers (0-20 cm, 20-40 cm and 40-60 cm) were collected at 10 cm inward from the canopy drip line for avoiding fertilization ditch. A total of 81 soil profile samples from honey pomelo orchards were collected. After air drying, the soil samples were gently ground, sieved (0.850 mm and 0.150 mm) and properly stored before analysis. In addition, 55 samples of commercial organic fertilizers were collected from the market in Pinghe county for test of total sulfur content on dry weight basis. There was a problem of excessive sulfur in the soil and leaves in honey pomelo orchards in Pinghe county. Soil available sulfur enrichment led to soil acidification. Sulfur is easily leached in the soil, which promotes the leaching of calcium and magnesium in the soil. The use of sulfur-containing fertilizers should be controlled in Pinghe county.