茶园生物菌肥的营养效应研究

研究腊状芽孢杆菌(Bacillus megaterium)、K1菌株(胶质芽孢杆菌)(Bacillus mucilaginosus)及K2(胶质芽孢杆菌)、K3(胶质芽孢杆菌),两类细菌在实验室条件下的解磷、解钾作用,通过对特定波长、不同pH值条件下培养液的吸光度来确定单位体积菌数的多少,结果显示,在pH值为5.5~6.5之间的吸光度较高,即这些菌株能在此pH值范围内较好生长。将菌株发酵液与菜籽饼混合,配制成生物菌肥施入茶园土壤具有提高土壤速效养分含量、促进茶树新梢生长、增加茶叶产量的效果。结果表明:所选菌株作为菌种配制茶园生物菌肥,对提高土壤肥力,促进茶树生长,增加茶叶产量均有较好效果。

Study on Nutritional Function of Bacterial Bio-fertilizer on Tea Plant

The phosphorus-releasing and potassium-releasing ability of two species of bacterium in soils of tea garden (pH5.5~6.5) was investigated under laboratory condition. The amounts of bacterium per unit volume were ascertained by the absorbance of culture solution under special wavelength and various pH. Results showed the absorbance was relatively high under pH5.5~6.5, that meant these bacterium grew well under the above pH range: the bacterial bio-fertilizer made of bacterial fermentation liquid and rapeseed cake can enhance the contents of fast-acting phosphorus and potassium, improve the growth of tea shoots and increase the tea yield after applied in the soils of tea garden. Results indicated that the selected bacterial strain and the produced bio-fertilizer showed good effectiveness in proving the soil fertility and growth of tea plant and increase the yield of tea garden.