Chăn nuôi phân là một nguồn chất dinh dưỡng cho cây trồng và có thể nâng cao năng suất đất. Tuy nhiên, những lợi ích của phân bón được hiểu lầm. Ví dụ, như là một nguồn chất dinh dưỡng chính, phân bón cung cấp ít hơn nhiều, pound pound, so với một thùng chứa phân bón vô cơ. phân bón các thuộc tính phụ thuộc vào nhiều yếu tố: các loài động vật, chế độ ăn uống, tiêu hóa, protein và chất xơ, và chăm sóc động vật, nhà ở, môi trường, và giai đoạn sản xuất. Đặc trưng trong một số cách, phân. | 3 Manure Characteristics Don t hogs on small farms stink . Sure but they are spread out and they are in the open air. The smell is nothing compared to closing in a massive number of animals. You drive past a herd a cattle grazing in a pasture. There s no smell. You drive past a feedlot it stinks. With the hog farms we are talking a large number a confined animals. Proulx 2002 p. 114 INTRODUCTION Livestock manure is a valuable source of nutrients for crops and can improve soil productivity. However the benefits of manure are widely misunderstood. For example as a source of primary nutrients manure offers much less pound for pound than a container of inorganic fertilizer. Manure properties depend on several factors animal species diet digestibility protein and fiber content and animal care housing environment and stage of production. Characterized in several ways manure has important properties for collection storage handling and use including the solids content the percent of solids per unit of liquid and the size and makeup of manure solids fixed and volatile solids suspended solids and dissolved solids . Manure contains primary nutrients nitro-gen phosphate and potash but in small amounts. For example you would need eight times as much horse manure as 5-10-10 fertilizer to supply a given amount of nitrogen. It literally takes a pile of manure to provide an adequate supply of primary nutrients. Manure components can be characterized as organic and inorganic. To help control diseases and parasites human waste should not be mixed with animal manures especially pig dog and cat manure . The livestock manure described in this chapter is of an organic nature and agricultural origin. The information and data presented here can be used for planning and designing waste management systems and system components and for selecting waste handling equipment. LIVESTOCK WASTE CHARACTERIZATION VARIABLES Livestock waste characteristics are subject to wide variation both .
