| 肉桂人工林土壤速效养分与酶活性的季节变化 |
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| 引用本文： | 何斌,刘运华,陆志科,戴军.肉桂人工林土壤速效养分与酶活性的季节变化[J].经济林研究,2004,22(3):1-4. |
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| 作者姓名： | 何斌 刘运华 陆志科 戴军 |
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| 作者单位： | 1. 广西大学林学院,广西,南宁,530001
2. 广西高峰林场,广西,南宁,530000 |
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| 基金项目： | 广西大学科研基金资助项目(X022044)。 |
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| 摘 要： | 研究了广西高峰林场林龄为3年和6年的肉桂人工林土壤速效养分(水解N、速效P、速效K)和土壤酶活性(过氧化氢酶、脲酶、酸性磷酸酶)的季节变化规律及其相互关系。结果表明：两种林地土壤速效养分含量和土壤酶话性均表现出明显的季节动态．：E壤速效N、P、K含量和L壤脲酶活性均以肉桂生长初期(3月中旬)最高．其次是第一个生长高峰期(6月中旬)或第二个生长高峰期(9月中旬)，最低是生长未期(12月中旬)；而土壤过氧化氢酶和酸性磷酸酶活性以第一个生长高峰期或第二个生长高峰期最高．其次是生长初期,最低是生长末期；士壤速效养分与土壤酶活性的季节变化密切相关。因此，生长初期至第一个生长高峰期是肉桂林地施用N、P、K肥的适当时期。
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| 关 键 词： | 生长初期 生长高峰期 土壤速效养分 人工林 土壤酶活性 肉桂 林龄 含量 酸性磷酸酶 过氧化氢酶 |
| 文章编号： | 1003-8981(2004)03-0001-04 |
| 修稿时间： | 2004年5月12日 |
Seasonal Changes of Soil Available Nutrients and Enzyme Activity of Cinamomum cassia Plantation |
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| HE Bin,LIU Yun-Hua,LU Zhi-Ke,DAI Jun.Seasonal Changes of Soil Available Nutrients and Enzyme Activity of Cinamomum cassia Plantation[J].Economic Forest Researches,2004,22(3):1-4. |
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| Authors: | HE Bin LIU Yun-Hua LU Zhi-Ke DAI Jun |
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| Institution: | HE Bin~1,LIU Yun-Hua~2,LU Zhi-Ke~1,DAI Jun~2 |
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| Abstract: | The dynamic property of available nutrient and enzyme activities in soil of Cinamomum Cassia of 3 and 6 years old in Gaofeng farm was studied. And the relationship between them was discussed. The result showed that available N, P, K and urease activity were the highest during bud flush (mid-March), then were the first fast growing season (mid-June) or the second fast growing season (mid-September), and the lowest were growing pre-dormancy. Bat catalase and acid phosphatase were the highest during the first fast growing season or the second fast growing season, then were bud flush, and the lowest were growing pre-dormancy. There was positive relationship between available nutrient and enzyme activities in soil. Therefore, the optimal fertilization period is between bud flush and the first fast growing season. |
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| Keywords: | Cinamomum cassia plantation available nutrient in soil enzyme activities in soil seasonal changes |
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