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丁立忠, 金锦, 汪智勇, 周菊敏, 童志鹏, 周平山, 马闪闪. 临安不同产区镇山核桃林地土壤肥力水平的变化研究[J]. 浙江林业科技, 2020, 40(3): 45-50. DOI: 10.3969/j.issn.1001-3776.2020.03.007
引用本文: 丁立忠, 金锦, 汪智勇, 周菊敏, 童志鹏, 周平山, 马闪闪. 临安不同产区镇山核桃林地土壤肥力水平的变化研究[J]. 浙江林业科技, 2020, 40(3): 45-50. DOI: 10.3969/j.issn.1001-3776.2020.03.007
DING Li-zhong, JIN Jin, WANG Zhi-yong, ZHOU Ju-min, TONG Zhi-peng, ZHOU Ping-shan, MA Shan-shan. Changes of Soil Fertility in Carya cathayensis Stands in Major Production Towns of Lin’an City[J]. Journal of Zhejiang Forestry Science and Technology, 2020, 40(3): 45-50. DOI: 10.3969/j.issn.1001-3776.2020.03.007
Citation: DING Li-zhong, JIN Jin, WANG Zhi-yong, ZHOU Ju-min, TONG Zhi-peng, ZHOU Ping-shan, MA Shan-shan. Changes of Soil Fertility in Carya cathayensis Stands in Major Production Towns of Lin’an City[J]. Journal of Zhejiang Forestry Science and Technology, 2020, 40(3): 45-50. DOI: 10.3969/j.issn.1001-3776.2020.03.007

临安不同产区镇山核桃林地土壤肥力水平的变化研究

Changes of Soil Fertility in Carya cathayensis Stands in Major Production Towns of Lin’an City

  • 摘要: 监测林地土壤肥力动态变化有利于山核桃Carya cathayensis 林地土壤地力维护及科学经营管理。以杭州市临安区山核桃主产区7 个镇山核桃林地土壤为研究对象,分别于2008 年、2013 年和2018 年调查、采集固定位点254 个样地土壤样品,研究不同镇山核桃林地土壤肥力的动态变化。结果表明,2018 年山核桃林地土壤pH 平均为5.77,有机碳平均含量为19.52 g·kg-1,水解氮、有效磷、速效钾平均含量分别为74.96 mg·kg-1,3.64 mg·kg-1,99.93 mg·kg-1;2018 年,7 个镇山核桃林地的土壤水解氮含量显著低于2008 年和2013 年(P<0.05);7 个镇林地土壤磷素有效性普遍较低,均不能满足山核桃正常生长磷素需求;不同镇山核桃林地土壤速效钾含量以2013 年为最低,其中,岛石镇、河桥镇土壤速效钾含量显著低于2008 年(P<0.05);2008-2018 年,7 个镇山核桃林地的土壤有机碳和土壤pH 总体上呈升高趋势,而土壤水解氮、有效磷和速效钾含量下降明显。今后,在山核桃林经营过程中仍需大力推广测土施肥技术,科学施用氮肥,重视钾肥施用,提高磷肥利用率,促进山核桃林地土壤营养均衡供给。

     

    Abstract: In 2008, 254 sampling point locations were established in Carya cathayensis stands in 7 towns of Lin’an, Zhejiang province. Soil determinations were carried out respectively in 2008, 2013 and 2018 on fertilities. The results showed that in 2018, the mean soil pH, organic carbon (SOC) content, hydrolysable nitrogen (N), phosphorus (P) and potassium (K) were 5.77, 19.52 g/kg, 74.96 mg/kg, 3.64 mg/kg and 99.93 mg/kg. Soil available N contents in the tested towns were significantly lower in 2018 than that in 2008 and 2013 (P<0.05). Soil available P was in serious shortage in tested towns. Soil available K content was the lowest in 2013 for all towns. Soil organic carbon and soil pH increased from 2008 to 2018, while hydrolysable N, available P and K decreased evidently.

     

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