EM bacteria from a variety of beneficial bacteria constitute the function as a whole, to make the EM bacteria play its powerful features, you must provide a suitable environmental conditions for the bacteria. EM bacteria use as a foliar activity in order to increase the flora of stomatal conductance, deposit the carbon dioxide absorption, increased leaf cuticle translucent, while the secretion of growth-promoting substances, increase chlorophyll content, and comprehensively improve light performance. The easiest way to create a suitable environment for the growth, the best use of time is to choose EM bacteria. EM probiotics do not contain surfactants and adhesives, adhesion on the blade is not strong, intolerant rainfall, therefore, must not be used before the rain; higher summer temperatures, EM bacteria sprayed on the leaf surface liquid quickly evaporated to dryness, combined with the strong ultraviolet radiation in sunlight during the day have a higher inhibitory bactericidal effect, a serious impediment to the activity of EM bacteria play, so should not be used in the morning; Then there can not be mixed with fungicides, the best in use fungicides for 5-7 days and then spraying EM bacteria; evening when the temperature is lower blades evaporation less, the sun light is weak, conducive to EM bacteria survive, to facilitate the functioning Furthermore it will not rain cloudy day is good use of time .