外源性氮和磷对藜蒴林凋落叶分解的影响
发布时间：2019-05-27 20:30
【摘要】：研究了外源性氮和磷对藜蒴(Castanopsis fissa)凋落叶的分解速率、分解过程中N、P、K含量的变化,有助于了解外源性N、P和N+P影响藜蒴凋落叶分解的机理,以便为科学合理经营藜蒴人工林提供科学依据。在广东云勇林场的藜蒴林地采用尼龙网袋分解法,设置了对照(CK)、施N(10 g·m-2)、施P(5 g·m-2)、施N+P(10 g·m-2+5 g·m-2)4种处理。结果表明:施N和N+P阻碍了凋落叶的分解,施P促进了凋落叶的分解。24个月后,对照、施N和P处理的凋落叶N含量显著大于凋落叶初始N含量;除施N处理外,其余处理的凋落叶P含量显著大于其初始P含量,其中施P和N+P使凋落叶的P含量大幅上升;凋落叶K含量在整个分解过程中波动较大。
[Abstract]:The decomposition rate of (Castanopsis fissa) litter by exogenous nitrogen and phosphorus and the changes of N, P and K contents in the decomposition process were studied, which was helpful to understand the mechanism of exogenous N, P and P affecting the decomposition of capsule litter. In order to provide scientific basis for scientific and rational management of capsule plantation. Four treatments, N (10 g 路m ~ (- 2), P (5 g 路m ~ (- 2) and N P (10 g 路m ~ (- 2) 路m ~ (- 2), were used in the resveratrocapsule forest land of Yunyong Forest Farm, Guangdong Province. The results showed that the application of N and N P hindered the decomposition of litter, and the application of P promoted the decomposition of litter. After 24 months, the N content of litter treated with N and P was significantly higher than that of initial N content of litter. Except for N treatment, the P content of litter leaves in other treatments was significantly higher than that in the initial P content, and the P content in litter leaves increased significantly with the application of P and N P, and the K content in litter fluctuated greatly in the whole decomposition process.
【作者单位】： 华南农业大学林学与风景园林学院;
【基金】：中央财政林业科技推广示范项目“广东省生态公益林培育技术推广”(2015-GDTK-07)
【分类号】：S714
本文编号：2486457
[Abstract]:The decomposition rate of (Castanopsis fissa) litter by exogenous nitrogen and phosphorus and the changes of N, P and K contents in the decomposition process were studied, which was helpful to understand the mechanism of exogenous N, P and P affecting the decomposition of capsule litter. In order to provide scientific basis for scientific and rational management of capsule plantation. Four treatments, N (10 g 路m ~ (- 2), P (5 g 路m ~ (- 2) and N P (10 g 路m ~ (- 2) 路m ~ (- 2), were used in the resveratrocapsule forest land of Yunyong Forest Farm, Guangdong Province. The results showed that the application of N and N P hindered the decomposition of litter, and the application of P promoted the decomposition of litter. After 24 months, the N content of litter treated with N and P was significantly higher than that of initial N content of litter. Except for N treatment, the P content of litter leaves in other treatments was significantly higher than that in the initial P content, and the P content in litter leaves increased significantly with the application of P and N P, and the K content in litter fluctuated greatly in the whole decomposition process.
【作者单位】： 华南农业大学林学与风景园林学院;
【基金】：中央财政林业科技推广示范项目“广东省生态公益林培育技术推广”(2015-GDTK-07)
【分类号】：S714
【相似文献】
相关期刊论文 前1条
1 曹珍;刘姝媛;曾曙才;;三种林木凋落叶淋滤液性质及对赤红壤硼锌的影响[J];土壤;2011年04期
，本文编号：2486457
本文链接：https://www.wllwen.com/kejilunwen/nykj/2486457.html
