1. We should make good use of the advantages and disadvantages to improve the soil fertility.
Chemical fertilizer has single nutrient, high content, quick fertilizer effect, but short duration; organic fertilizer has complete nutrient and long fertilizer effect, which can improve soil and fertility.
The mixed use of the two can give full play to the nutrients needed for crop growth, enhance the robust growth of crops and increase the yield.
2. Keep and store nutrients and reduce loss.
Chemical fertilizer dissolves quickly and has high solubility.
After being applied into soil, the concentration of soil solution will increase quickly, resulting in higher osmotic pressure of crops, affecting the absorption of nutrients and water by crops, and increasing the loss and opportunity of nutrients.
The mixed use of organic fertilizer and chemical fertilizer can restrain the problem of soil solution increasing sharply.
At the same time, organic fertilizer can improve the nutrient absorption conditions of crops, improve the soil water and fertilizer conservation capacity, avoid and reduce the loss of fertilizer nutrients, and improve the utilization rate of chemical fertilizer.
3. Reduce nutrient fixation and improve fertilizer efficiency.
After the chemical fertilizer is applied into the soil, some nutrients will be absorbed by the soil, and the fertilizer efficiency will be reduced.
If superphosphate and calcium magnesium phosphate are directly applied to the soil, they are easy to combine with iron, aluminum, calcium and other elements in the soil, forming insoluble phosphoric acid and being fixed, resulting in the loss of effective nutrients.
If mixed with organic fertilizer, it can not only reduce the contact surface with soil, reduce the fixed opportunity of soil and chemical fertilizer, but also make those insoluble phosphorus in phosphate fertilizer into available phosphorus that can be used by crops, and improve the fertilizer efficiency of phosphorus fertilizer.
4. Improve soil structure and increase production.
Long term application of chemical fertilizer alone will damage the soil aggregate structure, cause the soil to be sticky and hard, and reduce the tillage performance and fertilizer supply performance.
Organic fertilizer contains abundant organic matter, which can activate fluffy soil and reduce its capacity; it can improve the physical and chemical properties of soil such as water, fertilizer, air, heat, etc.; and adjust the pH value.
The mixture of the two can not only increase the yield, but also promote the sustainable development of agriculture.
5. Reduce consumption and pollution.
The combination of organic fertilizer and chemical fertilizer can reduce the amount of chemical fertilizer application by 30% - 50%.
On the one hand, the amount of chemical fertilizer can reduce the pollution to the land, on the other hand, part of the organic fertilizer can degrade the chemical fertilizer and pesticide residues in the soil.
6.It can promote the activity of microorganism and increase the soil nutrient.
Organic fertilizer is the energy of microbial life, and chemical fertilizer is the inorganic nutrition for microbial growth.
The mixture of the two can promote microbial activity, and then promote the decomposition of organic fertilizer, and produce a large amount of carbon dioxide and organic acid, which is conducive to the dissolution of insoluble nutrients in soil and supply for crops to absorb.
Carbon dioxide can increase the carbon nutrition of crops and improve the photosynthetic efficiency.
The life of microorganism is short.
After death, it will release nutrients for crops to absorb and use.
Post time: May-06-2021