Study On The Process Of "Organic-inorganic Compound Fertilizer" Made From Tea Residue And Effect Of The Fertilizer On Tea Quality And Soil Environment

Tea residue was fermented by four species of microorganisms isolated from the landfill of tea residue. A new-type of organic- inorganic compound fertilizer of tea residue (OICFTR) has been researched and developed. The effects of the fertilizer on tea yield, tea ingredient, and soil were studied. The results were concluded as follows:1. Yeast, Penicillium, Aspergillusniger and OidiumLactis Fresenius had been separated from the landfill of tea residue.2. The optimum condition for fermenting tea residue was three days of aeration and then three days of anaeration. The physiochemical properties of the fermented tea residue were: pH 5.0, tea polyphenols 4.5%, amino acids 1.85%, water extraction 22.12%, crude fiber 21.30% and the total nitrogen content 4.95%.3. The process to produce OICFTR is as follows:aerobic microorganisms grew in tea residue medium anaerobicmicroorganisms grew in tea residue medium dried fermented tearesidue add some compounds and mixed triturated shaped dried packed OICFTR4. The tea yield of tea garden fertilized by the OICFTR in Hangzhou was 18.7% higher than that of the carbamide. Tea yields were 8.5% and 26.2% higher than those of by rape cake in April and May, respectively. The catechins and caffeine of tea used with OICFTR were higher than that of with carbamide in Hangzhou, the amino acid of tea used with the OICFTR was 44.8% and 10.8% higher than that of with carbamide inApril and May, the water extract of tea used with OICFTR was 18.1% and 16.2% higher than that of with carbamide in April and October. On the whole, tea ingredient used with the OICFTR was higher than that of with Changzheng organic fertilizer.5. The OICFTR had little effect on the soil acidity, but the carbamide did. The organic matter content of the surface soil(0-15cm) used with OICFTR was 80.7% and 30.2% higher than that of with carbamide and rape cake. The tea polyphenols could inhibit the activities of the urease, the activities of the urease used with the OICFTR was 16.4% lower and the activities of the urease used with Changzheng organic fertilizer was higher 26.9% than that of with carbamide in the surface soil(0-15cm). The amount of microbes, actinomyces and the epiphytes in soil used with the OICFTR was 69.0%, 22.6% and 162.5% higher than that of with the carbamide, respectively.