With the continuous improvement of living standards, people have increasingly higher quality requirements for food, fruits and vegetables. In addition to using organic microbial fertilizers, spray granulation, amino acid fertilization, and other organic fertilizers, farmers are paying more and more attention to their application. Organic fertilizers such as pigs, cattle and sheep manure, but in general farmers use basal fertilizers as unripe organic fertilizers, causing many hidden dangers to crops.
Burning roots
Unfermented livestock manure is applied to the farmland, because the fermentation is not complete, "secondary fermentation" occurs, when the fermentation conditions are met, under the action of microorganisms, raw manure fermentation; when the fermentation site is closer to the root or crop When the plants are small, the heat produced by the fermentation will affect the growth of the crops, causing "burning of roots, burning seedlings", and in severe cases it will lead to plant death.
Pest threats
Faeces contain coliforms, nematodes, and other pathogens and pests. Direct use can cause the spread of diseases and pests, and the incidence of crops. It also affects the health of people who eat agricultural products. When unfermented organic matter is fermented in the soil, it can easily grow bacteria and bacteria. Insect pests cause plant diseases and pests to occur.
Poison gas hazard
Unfaded feces produce methane, ammonia and other harmful gases during the decomposition process, causing acid and damage to the soil and crops and root damage.
Lead to soil hypoxia
Unfaded feces deplete the oxygen in the soil during the decomposition process, temporarily leaving the soil in an anoxic state. Under such an anoxic condition, crop growth is inhibited.
Nutrient nutrient loss
In the process of traditional stacking of manure, due to natural decomposition, wind and rain, etc., the loss of nutrients such as nitrogen, phosphorus and potassium is very serious, and the general utilization rate is only 50%.
Fertility is obviously slow
The nutrients in unfermented and decomposed organic fertilizers are mostly organic or slow-acting, and cannot be directly absorbed and utilized by crops. Only the decomposition and conversion into the quick-effect state can be absorbed and utilized by crops. Therefore, direct application without fermentation will slow down the effect of the fertilizer.
This shows that raw manure or unfamed animal manure can not be directly applied to farmland, otherwise it will bring harm to crops.
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