Effect of Strawberry Continuous Cropping on Soil Microflora and Soil Nutrients Content in Greenhouses

In order to definite the causes of continuous cropping of strawberry in greenhouse,the effect of strawberry continuous cropping on soil microflora,water-soluble salt content,soil nutrient content were studied and analyzed.The results showed that soil acidity changed significantly,and the pH was between 5.8～5.9,which had reached the level of acidification;the number of fungi in the soil was 7～8 times higher than the background plots,a serious increase in the number of pathogens;the salt content in the soil had increased to some extent,especially Ca2+,NO3- and SO42- content increased significantly;soil nutrient content would not reduce or lost with continuous cropping,on the contrary,due to chemical fertilizer applied,some nutrients also showed a trend of increase.