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覆草对果园土壤腐殖质组成和生物学特性的影响

open access: yesShuitu Baochi Xuebao, 2005
在杏园和苹果园覆盖麦草,研究其对土壤腐殖质组成、微生物区系及土壤酶活性变化的影响。结果表明:覆草显著提高了土壤腐殖质的含量,褐腐酸(HA)含量及褐腐酸与黄腐酸比值(HA/FA)增大;重组腐殖质和松结态、紧结态腐殖质含量增高,尤其是松结态腐殖质不仅绝对含量提高,而且与重组腐殖质及紧结态腐殖质的相对含量也明显提高。覆草增加了土壤细菌、放线菌及氨化细菌和纤维分解菌的数量,降低了硝化细菌数量;同时提高了土壤多酚氧化酶、蔗糖酶、碱性磷酸酶、脲酶、纤维素酶活性,对过氧化氢酶活性影响不大。
doaj  

[Clinical value of plasma Epstein-Barr virus DNA monitoring in lymphoproliferative disorders after allogeneic hematopoietic stem cell transplantation in children]. [PDF]

open access: yesZhongguo Dang Dai Er Ke Za Zhi
Ding ZH   +12 more
europepmc   +1 more source

[A case of cirrhosis combined with myeloproliferative neoplasms]. [PDF]

open access: yesZhonghua Gan Zang Bing Za Zhi
Li WC, Zhao SX, Liu SH, Han F, Nan YM.
europepmc   +1 more source

[HDAC2-mediated H3K27 acetylation promotes the proliferation and migration of hepatocellular carcinoma cells]. [PDF]

open access: yesBeijing Da Xue Xue Bao Yi Xue Ban
Tang S   +5 more
europepmc   +1 more source

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