Pilot Study On Dairy Manure Composting Treatment And Effect Of The Quality Of Brassia Campestris L. After Compost Application

Effect on dairy manure treatment by static bed composting, outdoor windrow composting and microbe reagent inoculation had been studied. Temperature, rate of water content, pH, conductivity, dynamic variations of key nutrient elements and seed germination index were measured to evaluate the compost maturity. The mature dairy manure are applied in Brassia campestris L. planted, proving up the capability and quality effect of organic fertilizer to c, through inspecting the growth, nitrate content, Vc content, chlorophyll content and the carotenoid content of Brassia campestris L.. The results as follows:1. Comparing with the outdoor windrow composting, the static bed composting system was more efficacious in outcome application, could save 50% land, reduce the second pollution and avoid the disadvantage to the ferment from rainfall.2. Microbe reagent could accelerate the dairy manure maturity, improve the compost efficiency, reduce the Ammonia-N emission and dismiss of moisture quickly. The water content decreased to 32% which was so low that microorganism growth and metabolism were restrained in the outdoor composting inoculated microbe reagent. After the artificial turning, microorganism resumed metabolism at the moisture content of 60%.3. The temperatures within the compost piles were maintained at 55℃for more than 3 days and more than 50℃for 5~7 days. Pathogens and parasite eggs can be killed on the conditions that meet the demand for sanitation and maturity of compost. In this study, every composting process was innocuity according to GB7959-87.4. In the compost application study, seed Germination Index(GI) changed with time according to the rule of GI increasing. GI with outdoor compost added microbe reagent increased to 1.13 at 25th day from initial 0.59. The results showed that the compost was mature.5. The mature dairy manure can accelerate the increase of biomass, reduce the nitrate content of Brassia campestris L.. Security of vegetable could be ensured. The yield with organic-inorganic mixed fertilizer increased by 29.61% than that with chemical fertilizer. The nitrate content with organic fertilizer was reduced by 68.39% compared to that with chemical fertilizer. There were quite significant differences at 1% level between the treatments with organic fertilizer and chemical fertilizer. There were not significant differences for Vc, chlorophyll and carotenoid content between the treatments with organic fertilizer and inorganic fertilizer. The chlorophyll and carotenoid content of the treatment with organic fertilizer reduced by 13.74% and 10.35% than the treatment with chemical fertilizer, respectively.