Rabbit Manure Compost for Seedling Nursery Blocks: Suitability and Optimization of the Manufacturing Production Process

Abstract

Using rabbit manure to prepare growing media is an effective method to solve environmental pollution and realize resource utilization. The solution to rabbit manure management is the composting process which could produce compost suitable for seedling nursery blocks, which could improve transplanting efficiency and seedlings’ survival rate. Seedling nursery blocks were obtained by mixing rabbit manure compost, vermiculite, rice straw, and peat. The effect of cold pressing parameters, including moisture content (25–45%), binder content (1–5%), molding compression ratio (2.5–4.5:1), and strain maintenance time (0–120 s), were investigated on blocks quality (i.e., ventilatory porosity, relaxation density, compressive resistance, and specific energy consumption) through a general rotation combined experiment. These results showed there were significant interaction effects between molding compression ratio and moisture content, moisture and binder content, binder content and strain maintenance time, and molding compression ratio and binder content on block quality. The optimal parameters for manufacturing blocks were that the molding compression ratio, moisture content, binder content, and strain maintenance time were 4:1, 33.5%, 3.1%, and 60 s, and the relaxation density, ventilation porosity, and specific energy consumption were 363.31 kg/m3, 18.72%, and 0.44 J/g, which could achieve emergence performance.

Understanding the drying mechanism of straw substrate culture block: Physicochemical properties, pore structure, and drying optimization

“…These applications primarily utilize crop residues like rice straw and corn stover as substrate materials. Other components, such as cow dung, are added and physically compressed and molded to form solid block substrates for growing mediums and seedling breeding purposes [ [24] , [25] , [26] , [27] ].…”

Increasing silage maize yield and nitrogen use efficiency as a result of combined rabbit manure and mineral nitrogen fertilization

“…Rabbit manure can be used directly to fertilize crops 10 , 12 , 13 , as an ingredient in plant growth substrates 14 , 15 , as an adsorbent 16 , for biochar production 17 , 18 , and even in anaerobic fermentation to produce methane 19 .…”

Sustainable Utilization of Humic Substances and Organic Waste in Green Agriculture

“…The effect of cold pressing parameters on block quality was also examined. Thus, eco-friendly resource recycling management with respect to rabbit manure is achieved [10].…”