Abstract:

Took ‘K326’ of flue-cured tobacco as the experiment stuff. Preceding crops, depending on its type, has been commonly thought having positive or negative effect on rhizosphere microorganisms of flue-cured tobacco plant. Two field experiments were conducted with various before two ecology area different stubble to the smoke rhizosphere edaphon’s influence. The first stubble green manure, the wheat can increase the flue-cured tobacco rhizosphere soil mid and late part bacterium, ray fungi quantity, reduced the rhizosphere fungus quantity. Before the barley, fallow, pinches off the stubble when to smoke, before rhizosphere soil fungi quantity obviously were bigger than the rape, the wheat and the green manure, the stubble. In two ecology climatic regions, the first stubble planter rape affects not obviously to the smoke field rhizosphere soil fungi community, before the barley and the green manure, under the stubble plants the smoke soil rhizosphere microorganism quantity to be bigger than several other kind, stubble type obviously, by green manure good in barley.