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氨化细菌

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The amount of ammonfying took absolute dominance while that of cellulolytic was the lowest. Aerobe azotobacter played an important role in fixing nitrogen while aerobe bacteria was vital in fibrin-dissolving.

氨化细菌总数处于绝对的优势,纤维素分解菌的数量最少,好气固氮菌在固氮活动中起主要作用,纤维素的分解主要是好气性菌在起作用。

Results: Variations of heterotrophic bacteria, vibro, denitrifying bacteria, ammonifier, sulfatereductin...

结果:总异养菌、弧菌、反硝化细菌、氨化细菌、硫酸还原菌、总大肠菌群和粪大肠菌群在水体、底泥和梭子蟹体内具有相同的数量变化趋势。

The pH value in soil was significantly increased in litter aqueous extract of four decomposition stages. The NH+4-N concentration was significantly decreased in soil amended with litter aqueous extract of 10-day decomposition which promoted the growth of Aerobic azotobacter and Ammonifier but inhibited the growth of Aerobic cellulose-decomposer. Available phosphorus concentration was significantly increased and phenolic acid content was significantly decreased in soil amended with litter aqueous extract of 60-day decomposition which inhibited the growth of Aerobic azotobacter but promoted the growth of Aerobic cellulose-decomposer.

不同分解时间的凋落物浸提液均造成了土壤pH值的显著升高;分解10d的凋落物浸提液对土壤铵态氮的含量具有显著的降低作用,对土壤好气性自生固氮菌和氨化细菌的生长均具有显著的促进作用,而对好气性纤维素分解菌的生长具有抑制作用;分解60d的凋落物浸提液显著地降低了土壤酚酸含量,对土壤有效磷含量具有显著的升高作用,对好气性自生固氮菌的生长具有抑制作用,而对好气性纤维素分解菌的生长具有促进作用。

The change of remaining litter weight was the largest in the earlier 30 days during 60-day litter decomposition, and there was no significant difference in subsequent 30 days. The phenolic acid content of litter was significantly reduced with the decomposition time prolonging, and the releasing quantity of phenolic acid was the highest at the tenth day. The amounts of soil Aerobic azotobacter, Ammonifier and Aerobic cellulose-decomposer and the soil chemical properties such as pH, phenolic acid content, NH+4-N and available phosphorus were significantly affected by the litter aqueous extract of four decomposition stages.

凋落物分解的60d中,凋落物残留量在前30d内变化最大,30d后无显著变化;凋落物中酚酸含量随分解时间的延长,呈显著降低的趋势,且在分解10d时,酚酸释放量最大。4个分解动态的凋落物浸提液显著地改变了土壤好气性自生固氮菌、氨化细菌、好气性纤维素分解菌的数量和土壤pH值、酚酸含量、铵态氮、有效磷等化学性质。

The phenolic acid content of litter was significantly reduced with the decomposition time prolonging, and the releasing quantity of phenolic acid was the highest at the tenth day. The amounts of soil Aerobic azotobacter, Ammonifier and Aerobic cellulose-decomposer and the soil chemical properties such as pH, phenolic acid content, NH+4-N and available phosphorus were significantly affected by the litter aqueous extract of four decomposition stages.

凋落物分解的60 d中,凋落物残留量在前30 d内变化最大,30 d后无显著变化;凋落物中酚酸含量随分解时间的延长,呈显著降低的趋势,且在分解10 d时,酚酸释放量最大。4个分解动态的凋落物浸提液显著地改变了土壤好气性自生固氮菌、氨化细菌、好气性纤维素分解菌的数量和土壤pH值、酚酸含量、铵态氮、有效磷等化学性质。

Result] The annual mean value of azotobacter,ammonifiers and nitrobacteria in the river water were 140,1 179 and 691 CFU/ml resp.,the yearly average of nitrosation and denitrifying bacteria were 647 and 369 MPN/ml.

结果] 水体中固氮菌、氨化细菌、硝化细菌年平均数分别为140、1 179和691 CFU/ml,亚硝化和反硝化细菌年平均数分别为647和369 MPN/ml。

With the increase of continuous cropping year, ammonifying bacteria, azotobacter and cellulolytic bacteria showed the tread of first increases and then decreases and reached the biggest value at continuous cropping for 5 and 3 yr, while the nitrifying bacteria quantity was decreased sharply with the increase of continuous cropping year.

随连作年限的增加,氨化细菌、固氮菌和纤维素分解菌数量呈现先增加后降低的趋势,分别在连作5、3和3年达到最大值,而硝化细菌数量随连作年限的增加急剧下降。

After insecticide carbofuran was applied to soil, the results were compared with control soil: The number of soil aerobic bacteria actinomyces, ammonifying bacteria and mold was strongly restrained, and the restrainratio and pesticide concentration have positive correlation.

土壤中添加杀虫剂呋喃丹后,与未添加农药的对照土壤相比,土壤中好氧性细菌、放线菌、氨化细菌、霉菌均受到较强的抑制,且抑制率与施药浓度呈正相关性。

Correlation coefficients between ammonifying bacteria and urease, polyphenol oxidase, bacteria and phosphatase, total microbe quantity were significant at 0.05 levels, and correlation coefficients between aromatic decomposing bacteria and urease, catalase, phosphatase and total microbe quantity were significant at 0.01 levels.

相关分析表明,氨化细菌与脉酶、多酚氧化酶均呈显著正相关;芳香族分解菌与脉酶、过氧化氢酶呈极显著正相关;细菌、微生物总量分别与磷酸酶呈显著、极显著正相关。

Straw returned to field played a positive role in increasing soil insect communities with the largest contribution, primarily the amounts of individuals and dominant species of macro and meso/micro soil animal, especially Neanuridae and Isotomidae animals individual amounts increased by nearly 10 times.(3) Soil nutrien had a positive correlation with soil bacteria, azotobacter, ammonifying bacteria, cellulose decomposing bacteria and denitrifying bacteria. Straw returned to field could stimulate effective microorganisms growth and population quantity in the soil. The increase of microbe community amount is 15%~44% more than that of CK.(4) Soil nutrien had a positive correlation with soil phosphatase, urease and sucrase activities, and a negative correlation with catalase.

研究发现:(1)长期配施秸秆能提高土壤速效氮、磷、钾含量,平均分别提高15%、48%和22%;(2)配施秸秆对土壤昆虫群落呈正向作用且贡献最大,主要增加了大型、中小型农田土壤动物的个体总数和优势类群数量,尤其是疣跳科和等节跳科动物个体数量增加近10倍;(3)土壤养分与土壤细菌、固氮菌、氨化细菌、纤维分解菌和反硝化细菌呈正相关,秸秆还田激发土壤有益微生物的生长和类群数量,使土壤微生物类群数量比对照增加15%~44%;(4)土壤养分与土壤磷酸酶、脲酶、蔗糖酶活性呈正相关,与过氧化氢酶呈负相关,秸秆还田增强土壤蔗糖酶、磷酸酶和脲酶活性,特别是脲酶和蔗糖酶活性平均提高26.5%。

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