Effects of Microorganism Numbers from Different Crop Stubbles on Tobacco Quality
The soil microorganism numbers from differernt crop stubbles were analyzed during different growth periods of tobacco,and their effects on tobacco quality were studied.The results showed that the numbers of bacteria,actinomycetes,fungi increased largely in flourish and mature period of tobacco,then decreased.Soil of cabbage stubble,sweet potato stubble and sesame stubble belongs to the bacterial soil and the soil of maize stubble belongs to the fungal soil.Tobacco quality from the fungal soil treated by maize stubble was not good.At the same time,tobacco quality from the bacterial soil treated by sweet potato stubble and sesame stubble was better,so the bacterial soil is conducive to improve the quality of tobacco.