Due to the zero growth policy of chemical fertilizers and pesticides, the increase of government subsidy, the change of farmers’ understanding of bio-organic fertilizer and the improvement of crop product quality and other factors make bio-organic fertilizer usher in an unprecedented development opportunity, and bio-organic fertilizer production team is formed. Bio-organic fertilizer plays the most important role in improving the quality of agricultural products. It is the most effective way to keep the soil health for the sustainable development of agriculture. It is an effective way of agricultural waste recycling, with less resource consumption and the lowest cost.

         The role of bio-organic fertilizer on the health of the soil is reflected in the preservation of water, fertilizer, insulation, gas (not condensed, not desertified, no saline) and so on, and can provide a complete plant nutrients (essential chemical elements, Molecular active substances) and a perfect soil ecological structure. The use of microorganisms to solve the problem of excessive soil heavy metals. Reducing the total amount of heavy metals in farmland is a long and costly process in which soil heavy metals can not be degraded and can be activated using microbes. Microbial activation of mineral nutrients at the same time, there is the possibility of activation of symbiotic heavy metals, microorganisms can be adsorbed and passivated soil heavy metals, thereby reducing plant heavy metals.

          Detection of the quality of bio-organic fertilizer, the most simple and intuitive method of detection is sensory determination — dark brown, odorless, with the taste of the soil will be qualified. Another simple method is the water glass test method: the fertilizer into the water, the upper the more floating objects, the lower the lower the better the sediment, cut the middle layer of transparent brown.

          Bio-organic fertilizer industry is also a problem. Enterprises, the bacteria production enterprises and fertilizer production enterprises out of touch, and the lack of coordinated development of fertilizer enterprises is the industry’s difficult point, resulting in uneven quality of bio-organic fertilizer products.