| Recently, agriculture and stock-raising develop rapidly in China. The composition of crop farming is adjusted deeply and the area of protected cultivation increases significantly. However, plenty of agricultural wastes, such as straw, livestock and poultry manure were produced. The environment has been seriously polluted by littering freely these wastes. So it is urgent to find ways to disposal this waste. Besides, the deficiency of CO2, soil degradation, soil-borne diseases and continuous cropping obstacles have become the important factors affecting the quality and yield of the vegetables in the greenhouse. In this research, the effects of CO2 enrichment by fermentation of organic wastes on the yield and quality of strawberry in the greenhouse, and the effects of compost mixed with some functional microorganisms on production and quantity of Chinese cabbage, on the culture of seeding of strawberry named "Hongjia" in plot and on alleviating the problem of the continuous cropping soil in indoor cultivating experiment were studied. The aim is 1) to improve the technical system that using residuals of compost by fermentation of agriculture waste to application of CO2; 2) to make use of the resource and increase profit; 3) to provide foundations for culture of vegetables. The results obtained from experiments are as follows:1. Effects of CO2 enrichment by fermentation of organic wastes on the yield and quality of vegetables in the greenhouseThe yield and quality of strawberry was studied under CO2 enrichment via the fermentation of agricultural organic wastes (swine feces and rice straw) in the greenhouse.The yield and the number and fruit weight per plant of strawberry in the greenhouse could be significantly increased by CO2 enrichment via fermentation of organic wastes. The yield and income of strawberry was increased by 19% and 25% respectively. Furthermore,2 weeks predated for harvest for strawberry. Besides, the quality of the vegetables was also significantly improved. The content of soluble sugar of strawberry was increased by 18.35%. The content of vitamin C of strawberry was increased 15.62%. The contents of soluble solid of strawberry were increased by 13.28%, and the ratio of sugar/organic acid was increased from 5.93 to 8.39. At the same time, the nitrate content of strawberry was half of the CK. The content of organic acid of strawberry was decreased by 20.00%.2. Effects of compost inoculated with functional microorganisms on the yield and quality of Chinese cabbageUnder the lower nitrogen fertilizer application rate, the effects of biological organic fertilizer (SPOF) on restoration and fertilization of soil, the Chinese cabbage growth, yield and quality were studied through pot experiments. The following results were got out:The results indicated that SPOF could significantly improve soil quality, enhance the bacteria/fungus ratio and increase soil available nutrient and the amount of microorganism. At the same time, SPOF could remarkably facilitate the growth and yield of Chinese cabbage. Furthermore, the content of soluble sugar, Vitamin C and sugar/acid ratio of Chinese cabbage was significantly increased, while nitrate content was decreased. In conclusion, SPOF could not only alleviate continuous cropping obstacles, remarkably promote the yield and quality of plant, but also reduce the amount of applied chemical nitrogen and the cost of production, improve the agriculture waste resource utilization efficiency, the economic benefit and pollution-free and green production.3. Effects of compost inoculated with functional microorganisms on the yield and quality of "Hongjia" strawberryThe effects of biological organic fertilizer (SPOF) on restoration and fertilization of soil, the "Hongjia" strawberry culture of seedling, the disease resistance were studied through pot experiments. The following results were got out:The results indicated that SPOF could significantly improve soil quality, increase soil organic matter, available nutrient and the amount of microorganism, enhance the bacteria/fungus ratio. At the same time, SPOF could remarkably facilitate the culture of seedling of "Hongjia" strawberry. Furthermore, SPOF could strengthen the disease resistance.4. Effects of the compost mixed with microorganisms on the improvement of cropping soil in the greenhouseUnder the condition of different temperatures, the effects of two microorganisms isolated by ourselves (By), commercial microorganism (Bio), and the mixed microorganism (Bio+By) on the growing speed of microorganism in the compost were studied in this research. An indoor soil cultivating experiment was carried out to study the effects of different microorganisms on alleviating the problem of the continuous cropping soil. The following results were got out:Between 30℃,35℃and 40℃, the number of the microorganisms in the compost was the most in 35℃on the seventh day. The number of the microorganisms could increased to 2.13×109 cfu·g-1 compost.The compost mixed with microorganisms could significantly improve soil quality, increase soil organic matter, available nutrient and the amount of microorganism, enhance the bacteria/fungus ratio. At the same time, Additions of the compost mixed with microorganisms to soil is better.
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