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首页> 外文期刊>Plant and Soil >Effects of soil extracts from repeated plantation woodland of Chinese-fir on microbial activities and soil nitrogen mineralization dynamics.
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Effects of soil extracts from repeated plantation woodland of Chinese-fir on microbial activities and soil nitrogen mineralization dynamics.

机译：杉木人工林地土壤提取物对微生物活性和土壤氮矿化动态的影响。

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摘要

Extracts of soils taken from under second and third rotations of Cunninghamia lanceolata significantly inhibited growth of non-pathogenic soil fungi, reduced soil respiration activities and net soil nitrogen mineralization rates, and increased the growth of pathogenic fungi. The combination of soil extracts and pathogenic fungi did not significantly reduce the growth of C. lanceolata seedlings compared with soil extracts alone. The combination of soil extracts with pathogenic and non-pathogenic fungi significantly increased the growth of seedlings compared with soil extracts and pathogenic fungi. These results suggest that the allelochemicals from soil extracts, rather than pathogenic fungi, are the key factor regulating the productivity and nitrogen cycling in repeated rotations of forest trees.
机译：从杉木第二轮和第三轮旋转下提取的土壤提取物显着抑制了非病原性土壤真菌的生长，降低了土壤呼吸活性和土壤净氮矿化率，并增加了病原真菌的生长。与单独的土壤提取物相比，土壤提取物和病原真菌的组合并没有显着降低轮叶杉木幼苗的生长。与土壤提取物和病原真菌相比，土壤提取物与病原性和非病原性真菌的结合显着提高了幼苗的生长。这些结果表明，土壤提取物中的化感物质而不是致病真菌是调节林木反复轮作过程中生产力和氮循环的关键因素。

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