Straw is the remaining part of mature crops after the seeds are harvested. It is a renewable biomass resource. However, a large amount of straw is burned or discarded, which not only causes serious environmental pollution, but also wastes valuable organic fertilizer resources. Therefore, strengthening the development and utilization of crop straw resources is a way to realize straw resource utilization. Returning crop stalks to the field is a fertility-increasing measure that is generally valued and applied in the world today. It saves fertilizers, turns waste into treasure, and avoids incineration. It is a typical low-carbon agricultural measure. Several common straw fertilization techniques include direct return to the field, incineration, return to the field by composting, return to the field through the belly, and return to the field with compost.
At present, the advantages of straw composting technology are:
(1) During the process of stacking and decomposing the straw, the high temperature generated can eliminate most of the pathogens and pests, reduce the pathogen base, reduce the insect population density, and produce some beneficial microorganisms, thereby reducing the occurrence of crop diseases, insect pests and weeds. At the same time, it also has multiple functions such as solving continuous cropping, fixing nitrogen, resolving potassium, and improving the quality of crops, and is suitable for large-scale promotion in rural areas.
(2) In the process of stacking and decomposing straw, most of the easily decomposable organic matter is decomposed. After the compost is returned to the field, it will not cause root burning and crop death. The currently vigorously developed bio-stalk reactor technology is to use high-temperature bacterial preparations to quickly pile straw into high-quality organic fertilizer. On the one hand, the straw fiber is quickly decomposed, the carbon dioxide content of farmland is increased, and the farmland microclimate is improved; Bacterial protein is absorbed or converted into humus by plants, which increases soil organic matter.
Straw fermentation equipments required for biofertilizer production
High configuration: continuous trough turning and polishing machine, automatic feeding bin, sliding screening machine, semi-wet material crusher, horizontal mixer, granulator, dryer, cooler, grading screener, coating machine, automatic Packaging machine equipment, belt conveyors, etc.
Standard configuration fertilizer manufacturing equipment
: straw manure dehydrator, fermentation turner, semi-wet material shredder, horizontal mixer, granulator, dryer, cooler, drum screening machine, film coating machine, packaging equipment, belt conveyor, etc.
Medium configuration: semi-wet material crusher, horizontal mixer, drum granulation
granulator, dryer, cooler, drum screening machine, packaging equipment, belt conveyor, etc.
Low configuration: semi-wet material crusher, horizontal mixer, granulator, drum screening machine, packaging equipment, belt conveyor, etc.