Screening On Quickly Rot Microbial Agents For Pig Breeding Pad Material And Application Effect Of Its Composting On Vegetables

In order to provide the scientific basis for pig-breeding litter waste to fertilizer use, this thesis used the compost test combined with laboratory analysis methods, studied the fermentation effect of different agents on litter waste compost of pig-breeding; By field test combined with laboratory analysis method to research the effect of pig-breeding litter waste compost on vegetable.The main results were as follows:1. Adding agents and chicken droppings was good to compost maturity. The electrical conductivity of composting pre-treatment increased rate and post-treatment decreased rate in treatment2and3was significantly faster than that in treatment1. The maximum of the E4/E6values of treatment2and3was lower than that of treatment1. The pH of treatment3declined the fastest, with the maximum of water-soluble content of ammonia nitrogen in treatment3and the fastest rising rate of water-soluble nitrate nitrogen content in treatment3of the fermentation process. The change of the content of total nitrogen in2and3was stable and the content of total phosphorus and total potassium was gradually increased. The water-soluble organic C/N of each treatment was a trend to decrease with increasing fermentation days. Compared to treatment1, the lignin degradation rates of2and3were higher by29.41%,34.03%, respectively, the cellulose degradation rate were higher by17.43%,20.18%, respectively, the hemi-cellulose degradation rates were higher by20.00%,17.02%, respectively.2. Composting was better by adding agents2and agents4. The high temperature did not last long throughout the fermentation process in each treatment. The electrical conductivity values of treatments by agents reached the maximum by7days in advance compared to the control, the E4/E6value of each treatment was the trend to increase and then to decrease. The pH value of treatment2reached the maximum for 7d in advance compared to the other treatments. Before22d of composting, the treatments of water-soluble ammonium nitrogen were higher than that in control. The content of water-soluble nitrate nitrogen rised the fastest in treatment4. The content of total nitrogen was the highest in treatment2and4, total phosphorus and total potassium in each treatment were gradually increased in the fermentation process. Water-soluble organic C/N in each treatment could exceed10in about10days, with The fastest speed of decomposition was treatment2. The lignin degradation rate of all treatments was increased by12.20%-49.60%, the cellulose degradation rate was increased by8.20%-16.90%, the hemi-cellulose degradation rate was increased by12.20%-21.30%.3. The content of chlorophyll presented an increased trend in cabbage. When transplanting22d, the organic-inorganic fertilizer treatments increased by6.00%-24.06%compared to that of pure chemical fertilizer treatment. As the increasing days of transplanting, the photosynthetic rate and transpiration rate of cabbage leaf presented downward trend, stomatal conductance and cell intercellular CO2concentration presented upward trend on the whole. There were no significant difference of the total absorption area,the active absorption area,the active absorption area ratio in each treatment of the cabbage's root. Root activity of E treatment was the highest in the post-period. Cabbage production of organic-inorganic fertilizer processing was higher than that of pure chemical fertilizer treatment, increased by1.48%-8.15%, E treatment got a highest yield. Vitamin C content of E treatment was the highest in the edible parts of the cabbage, with the highest content of soluble sugar of B treatment. The nitrate nitrogen content of C, D and E treatment were reduced by14.36%,17.66%and25.28%compared with pure chemical fertilizer treatment. Crude fiber content was the lowest in A treatment.4. There was the highest chlorophyll content in D treatment. The organic-inorganic fertilizer treatments had some influence on the lettuce in photosynthesis. After25days of transplanting, C treatment presented the strongest root activity;50days of transplanting, D treatment presented the strongest root activity. The total yield of lettuce was the highest with A treatment, all organic-inorganic treatment presented higher yield by5.63%-25.15%than that of the pure chemical fertilizer treatment. The vitamin C content of treatment A and C was higher in lettuce stem. The vitamin C content of E treatment was the highest in lettuce leaves. The soluble sugar content of A treatment was the highest in lettuce stems. The soluble sugar content of pure chemical fertilizer treatment was the highest in lettuce leaves. The nitrate content of C treatment was the minimum in lettuce stem and lettuce leaves. Crude fiber content of E treatment was the minimum in the lettuce stems and the lowest crude fiber content in lettuce leaves of B treatment.5. The compost test one got the best composting effect by adding agents and chicken manure treatment, compost test two got the best composting effect by adding agent2. In field trials, the A and E treatment had the best effect on improving photosynthesis, chlorophyll content, root activity, yield and quality of cabbage and lettuce.