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利用1995年到2006年长期定位各处理土壤有机碳含量及气候因子的资料,分析各气候因子与有各处理土壤有机碳含量的相关性。结果表明:营养生长阶段月平均气温变化对土壤有机碳含量的影响较大,与施用有机肥的处理相关性较强,生殖生长阶段温差越大越利于有机碳的积累;各月降水量对有机碳的影响基本上呈负相关,在苗期和乳熟期降水增多不利于有机碳的积累;日照时数的增加可以提高有机碳的含量,这一作用在生殖生长阶段表现的更为明显。整体来说,不施有机肥处理土壤有机碳含量受气候因子的影响比较明显,尤其是CK处理,而施用有机肥的处理的土壤有机碳含量仅在营养生长阶段受气候因子的影响比较明显。
Based on the long-term positioning data of soil organic carbon and climatic factors from 1995 to 2006, the correlation between each climatic factor and soil organic carbon content was analyzed. The results showed that the changes of monthly mean temperature in vegetative growth stage had a great influence on soil organic C content, which had a strong correlation with the application of organic manure. The larger the temperature difference during the reproductive growth stage was, the more conducive to the accumulation of organic carbon. The effect of precipitation was basically negatively correlated. The increase of precipitation in seedling stage and milky milky stage was not conducive to the accumulation of organic carbon. The increase of sunshine duration could increase the content of organic carbon, which was more obvious in reproductive growth stage. On the whole, the soil organic carbon content without organic manure was more affected by climatic factors, especially CK treatment. However, organic manure content with organic manure application was more affected by climatic factors only during vegetative growth stage.