覆盖物对土壤性质及微生物生物量碳氮的影响

doi:10.3969/j.issn.1000-2006.2017.01.014

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南京林业大学学报（自然科学版） ›› 2017, Vol. 60 ›› Issue (01): 89-95.doi: 10.3969/j.issn.1000-2006.2017.01.014

覆盖物对土壤性质及微生物生物量碳氮的影响

倪雪^1,2,张焕朝³,杨秀莲¹,王良桂^1*

1.南京林业大学风景园林学院,江苏南京 210037;
2.安徽工业大学建筑与工程学院,安徽马鞍山 243000;
3.南京林业大学林学院,江苏南京 210037

出版日期:2017-02-18 发布日期:2017-02-18
基金资助:
基金项目:“十二五”国家科技支撑计划(2013BA001B06); 江苏高校优势学科建设工程资助项目(PAPD); 江苏省农业科技自主创新资金项目(CX(14)2031)
第一作者:倪雪(236873217@qq.com)。*通信作者:王良桂(wlg@njfu.com.cn),教授。

Effects of mulching on soil property and microbial biomass carbon and nitrogen

NI Xue^1,2, ZHANG Huanchao³,YANG Xiulian¹,WANG Lianggui^1*

1.College of Landscape Architecture, Nanjing Forestry University, Nanjing 210037, China;
2. College of Civil Engineering and Architecture, Anhui University of Technology, Maanshan 243000, China;
3.College of Forestry, Nanjing Forestry University, Nanjing 210037, China

Online:2017-02-18 Published:2017-02-18

摘要/Abstract

摘要： 【目的】比较不同覆盖物处理下,深度为0～5、≥5～10 cm处土壤的性质和微生物生物量碳氮含量的变化,以期明确适宜‘日香桂’种植的覆盖物。【方法】采用5种覆盖物(无覆盖对照(CK)、马尼拉草皮覆盖(T)、五针白皮松树皮覆盖(W)、鹅卵石砾覆盖(G)、陶土颗粒覆盖(C))处理,每种覆盖3块重复并按随机区组排列。处理后,对土壤样品进行pH、全氮、有效氮、全磷、有效磷含量、脲酶活性、磷酸酶活性、微生物生物量碳氮含量进行测定。【结果】从整体看,覆盖材料对土壤密度和全氮含量的影响不显著,但是可以提高土壤有机物含量。在0～5 cm土壤深度,T和W覆盖处理降低了土壤pH,而G和C覆盖处理增加了pH。覆盖T与W比其他覆盖处理更有效地提高了土壤有效磷、有效氮含量,以及土壤脲酶、磷酸酶活性和微生物生物量碳氮含量,其中W覆盖在提高微生物生物量碳氮含量上表现更突出。在≥5～10 cm土壤深度,覆盖物均对土壤pH有提高作用,无机覆盖G和C对土壤性质和微生物生物量影响甚微; T和W覆盖的作用效果虽比0～5 cm的作用效果有所下降,但对土壤脲酶、磷酸酶、微生物生物量碳氮的提升作用依然存在。【结论】无论是0～5 cm,还是≥5～10 cm深度,在对于土壤性质和微生物改善方面,松鳞树皮和马尼拉草覆盖(W和T覆盖)都表现出优于其他覆盖的效果,且W覆盖对土壤微生物生物量碳氮、有效氮的促进作用更显著。

Abstract: 【Objective】 This research was aimed at comparing the effects of mulching on soil properties at 0-5 cm and ≥5-10 cm depths to provide better treatments on Osmanthus fragrans L. ‘Rixianggui’ planting. 【Method】The experiment was conducted for over a period of 12 months. Three replicates of five treatments, inorganic(round gravel(G), clay pellets(C)), organic(wood chips(W)), living(Zoysia matrella L. ‘Manila’ turf, a type of the cold-season sod(T))mulching and unmulched control(CK)treatment, were arranged in a randomized block design. The characters of soil were analyzed, including pH, total nitrogen,available nitrogen,total phosphorus,available phosphorus,MBC,MBN.【Result】Mulching did not affect soil bulk density, or total nitrogen content, but consistently improved soil organic matter. At 0-5 cm depth, T and W treatments decreased pH, while G and C treatments increased it. T and W treatments were effective for enhancing available nitrogen, soil urease activity, soil phosphatase activity and microbial biomass compared to G and C treatments, and W treatments is more effective in increasing soil microbial biomass compared to T. At ≥5-10 cm depth, mulching increased pH. G and C treatments did not promote soil properties. Furthermore, T and W treatments were still advantageous for improving soil urease activity, soil phosphatase activity and microbial biomass, but not significantly. 【Conclusion】Thus, our findings suggest that T and W treatments, improved the soil environment at 0-5 cm and ≥5-10 cm depths. Considering the effect of mulching on soil available nitrogen and microbial biomass,wood chips appear to be a better choice than others in ‘Rixianggui’ nurseries.

中图分类号:

S714

倪雪,张焕朝,杨秀莲,等. 覆盖物对土壤性质及微生物生物量碳氮的影响[J]. 南京林业大学学报（自然科学版）, 2017, 60(01): 89-95.

NI Xue, ZHANG Huanchao,YANG Xiulian,WANG Lianggui. Effects of mulching on soil property and microbial biomass carbon and nitrogen[J].Journal of Nanjing Forestry University (Natural Science Edition), 2017, 60(01): 89-95.DOI: 10.3969/j.issn.1000-2006.2017.01.014.

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覆盖物对土壤性质及微生物生物量碳氮的影响

Effects of mulching on soil property and microbial biomass carbon and nitrogen

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