| 湿加松林地土壤微生物数量与理化性质的季节动态变化 |
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| 引用本文： | 宋贤冲,曹继钊,邓小军,颜权,覃其云.湿加松林地土壤微生物数量与理化性质的季节动态变化[J].广西林业科技,2013(3):234-236. |
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| 作者姓名： | 宋贤冲 曹继钊 邓小军 颜权 覃其云 |
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| 作者单位： | [1]广西林业科学研究院国家林业局中南速生材繁育实验室广西优良用材林资源培育重点实验室,南宁530002； [2]广西国有派阳山林场,宁明532500 |
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| 基金项目： | 广西林科院基本科研业务费专项（林科201212）;国家林业公益性行业科研专项项目（201204101-11） |
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| 摘 要： | 分析测定不同采样时间的湿加松（Pinus elliottii×P caribaea）林地土壤微生物和土壤理化性质，并分析不同的采样季节其变化规律。结果表明：从冬季至夏季，湿加松林地土壤细菌和真菌数量呈现先下降后上升的趋势，而土壤放线菌数量单调下降。总体来看，细菌数量居多，放线菌数量次之，真菌数量最少。土壤pH和含水量也呈先下降后上升的趋势，土壤有机质、全N、碱解N含量呈上升趋势；全P、有效P以及速效K含量里先上升后下降的趋势；全K呈下降趋势。土壤P和K含量偏低，可适当补充P肥和K肥来促进林木生长。
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| 关 键 词： | 湿加松 土壤微生物 土壤养分 动态变化 |
Seasonal Dynamic Change between Soil Microbial Population and Physicochemical Properties in Stands of Pinus elliottii ~ P. caribaea var. hondurensis |
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| Authors: | SONG Xian-chong^ CAO Ji-zhao^ DENG Xiao-jun^ YAN Quan^ QIN Qi-yun |
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| Institution: | 1 ( I. Guangxi Forestry Research Institute, Key Laboratory of Central South Fast-growing Timber Cultivation of Forestry Ministry of China, Guangxi Key Laboratory of Superior Timber Trees Resource Cultivation, Nanning 530002, China; 2. Guangxi Paiyangshan State Forest Farm, Ningming, Guangxi 532500, China) |
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| Abstract: | Abstract： Soil microbial population and physicochemical properties in stands of Pinus elliottii x P. car ibaea var. hondurensis from different sampling time were analyzed and measured, and different sampling seasons and change regularities were analyzed. The results showed that from winter to summer, the popu lation of bacteria and fungi increased after decreasing, while the population of actinomyce showed mono tonic decrease. In general, the amount of bacteria was the largest followed by actinomyce, and fungi was the least, pH and moisture content of soil also increased after decreasing. The eontent of organic matter, total N, effective N showed monotonic increase. The content of total P, effective P and effective K rose after falling, while the content of total K was monotonic decrease. The content of P and the content of K were low, which could be supplied to promote the growth of plantations. |
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| Keywords: | P elliottii X P caribaea var hondurensis soil microbe soil nutrients dynamic change |
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