毕业论文移动版

摘要以4种不同种类牛粪与6种不同种类蚓粪为原材料，对牛粪、蚓粪进行物理化学性质研究。物理性质研究表明：牛粪颜色大多呈黑色或黑褐色，颗粒状、团状不等，略有氨臭味;蚓粪颜色呈黑褐色，均一泥土状，有自然泥土味。牛粪、蚓粪的吸附-脱附曲线属于Type Ⅳ型，且蚓粪具有更大的比表面积和孔隙体积，其主要由中孔构成孔隙。化学性质方面：蚓粪pH值在6。5-7。7之间；牛粪的pH值在8。0-9。0之间。蚓粪较牛粪含有较多种类的无机组分，两者都存在不同的矿物组成，但蚓粪中晶体矿物种类更加丰富。同时，蚓粪的速效磷含量显著高于牛粪，速效氮和速效钾的含量则低于牛粪。V6蚓粪即牛粪源蚓粪的无机元素K、Na、Ca、Mg、P含量最高，速效磷含量也是最高。V6蚓粪和C2牛粪的速效氮含量在同类中为最高，其速效肥力最好。88097

Use four different kinds of cow dung and six different kinds of Vermicompost as raw materials, and studies were conducted about on its physical and chemical properties。 The cow dung mostly in black or dark brown color, some are granular or massive, having a slightly smell of ammonia; Vermicompost is dark brown in colour, homogeneous, having a smell of natural soil。 The adsorption stripping curve of Cow dung and Vermicompost belongs to Type Ⅳ, and Vermicompost has bigger specific surface area and pore volume, mainly made up of holes in the pore。 The pH value of Vermicompost is between 6。5 to 7。7; and the pH value of cow dung is between 8。0 to 9。0。 Vermicompost contains more kinds of inorganic components, both of which exist different mineral, but the crystal mineral species in Vermicompost are more abundant。 At the same time, The available phosphorus content in vermicompost was significantly higher than that in cow dung, the content of available nitrogen and available potassium is below cow dung。 V6 is made by cow dung which has the highest inorganic elements K, Na, Ca, Mg, P and available P。 V6 and C2’s available nitrogen content was the highest, so its quick-acting fertility is best。 源-于,优W尔Y论L文.网wwW.youeRw.com 原文+QQ75201,8766

毕业论文关键词： 牛粪; 蚓粪; 物理化学性状

Keyword:  Cow dung; Vermicompost; Physical and chemical properties

目    录

1、引言 4

2、材料与方法 4

2。1供试材料 4

2。2牛粪与蚓粪的物理化学特性测定方法 5

2。2。1颜色与气味 5

2。2。2 pH值 5

2。2。3电导率EC 5

2。2。4灰分 5

2。2。5有机质含量 5

2。2。6阳离子交换量 5

2。2。7比表面积与孔径分布 5

2。2。8全量磷 6

2。2。9全量K、Na、Ca、Mg 6

2。2。10速效氮 6

2。2。11速效磷 6

2。2。12速效钾 6

2。2。13 X射线衍射分析（XRD） 6

3、数据处理 6

4、结果与分析 6

4。1牛粪、蚓粪的颜色与气味 6

4。2牛粪、蚓粪基本理化性质 6

4。3牛粪、蚓粪比表面积与孔径分布 (责任编辑：qin)