连续3年施用生物有机肥对土壤养分、微生物生物量及酶活性的影响
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国家公益性行业(农业)科研专项(201103004,200803031)和石河子大学高层次人才专项(RCZX201132)资助


Effects of Continuous Application of Bio-organic Fertilizer for Three Years on Soil Nutrients, Microbial Biomass and Enzyme Activity
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    摘要:

    通过温室盆栽试验,研究了连续3年在不同土壤中施用不同量的生物有机肥的土壤养分、微生物生物量、酶活性及棉花各器官干物质量的变化。结果表明:连续3年施用生物有机肥,3种土壤的养分、酶活性、微生物量和各器官干物质量均有不同程度的提高。随着其用量的增加,土壤养分、微生物量及脲酶活性也在增加,土壤pH则相反,土壤蔗糖酶、多酚氧化酶、蛋白酶活性表现先上升后下降的趋势,且在不同土壤施用生物有机肥10 ~ 30 g/kg时基本达到最高,过氧化氢酶活性无显著变化。高、中、低有机质含量的土壤的棉花各器官干物质量分别在施用生物有机肥10 ~ 20、20 ~ 30、40 g/kg时基本达到最高。随着施肥年限的延长,3种土壤微生物生物量碳、氮均表现为先降低后升高的趋势,土壤酶活性则变化差异较大。通过在不同有机质含量土壤中施肥与不施肥比较发现,本底有机质含量越低的土壤,施肥较不施肥的土壤养分、脲酶、蔗糖酶、蛋白酶活性及微生物量增加幅度越大。

    Abstract:

    Pot experiment in greenhouse with different application rates of bio-organic fertilizer on three kind soils were carried out for three years. Effects of fertilization on soil microbial biomass, enzyme activities and nutrients were studied. The results showed that, soil nutrients, microbial biomass and enzyme activity of treatments applied bio-organic fertilizer during three years increased compared with the no fertilization treatment in different contents of organic matter soils. The amounts of soil nutrients, microbial biomass and urease activity increased with the increase of application rate of bio-organic fertilizer, while pH value on the contrary. The soil invertase, polyphenol oxidase, protease activity increased first and then decreased, reached the highest when bio-organic fertilizer 10-30 g/kg applied in three kinds of soils, there was no significant change in catalase activity. Cotton dry matter accumulation reached the highest with application 10-20, 20-30 and 40 g/kg of bio-organic fertilizer, respectively in soils with higher, middle, and low contents of organic matter. Soil microbial biomass carbon and nitrogen decreased first and then increased and soil enzyme activity changed quite differently with the extension of fertilizer years in three kinds of soils. Soil nutrient, urease, invertase, protease activity and microbial biomass increased higher with bio-organic fertilizer applied in soil with the lower background organic matter.

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田小明,李俊华,王 成,褚贵新,危常州,郑 倩,邓世伟.连续3年施用生物有机肥对土壤养分、微生物生物量及酶活性的影响[J].土壤,2014,46(3):481-488. TIAN Xiao-ming, LI Jun-hua, WANG Cheng, CHU Gui-xin, WEI Chang-zhou, ZHENG Qian, DENG Shi-wei. Effects of Continuous Application of Bio-organic Fertilizer for Three Years on Soil Nutrients, Microbial Biomass and Enzyme Activity[J]. Soils,2014,46(3):481-488

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  • 在线发布日期: 2014-07-11
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