The two fertilizers are mutually exclusive

For example, the surplus available phosphorus fertilizer combined with available zinc in soil to form insoluble zinc phosphate precipitation, resulting in the deficiency of available zinc in soil.Not only that, but the excess available phosphorus also inhibits nitrogen uptake by crops, causing nitrogen deficiency.Another example is the increased use of potash, which reduces the uptake of nitrogen, magnesium, calcium, boron and zinc by crops, causing a shortage of these nutrients in crops.
The two fertilizers are mutually exclusive
Even organic fertilizers should not be used too much.If applied too much, the microorganism and the crop in the soil will have the contradiction of "competing for nitrogen" and "gaining nitrogen", causing a temporary lack of nitrogen in the soil for a period of time, and the surplus organic matter and zinc form complexes or chelates, which will reduce the effectiveness of zinc.The following measures can be adopted to prevent the "phase gram" between fertilizers:
Balanced fertilization as much as possible.
Excessive or excessive application of simple fertilizers to crops not only wastes fertilizer and increases production costs, but also leads to the shortage of some other nutrients or other elements.When fertilizing, according to the different structure of crop needs fertilizer and the ability of soil to feed, achieve the amount of input, not much balance of nutrients, so that peace can be achieved.
In addition, it is necessary to increase with increase and decrease with decrease according to the proportion of different crops' demands for various nutrients.
Relative to simple fertilizer, the proportion of nutrients in compound fertilizer or compound fertilizer is more appropriate and harmonious.Therefore, when fertilizing, compound fertilizer should be the main fertilizer, supplemented by simple fertilizer. For example, for the crops that require large amount of potassium, such as vegetables with tubers and roots, the potassium sulfate simple fertilizer can be added appropriately on the basis of the application of sulfur compound fertilizer.
The two fertilizers are mutually exclusive
Iii. Staggered application period or application site.
If zinc fertilizer and phosphate fertilizer mix, can produce certainly "the gram".Therefore, phosphate fertilizer should be applied as base fertilizer and zinc fertilizer should be applied as top fertilizer.Large amount of element fertilizer such as nitrogen, phosphorus and potassium should be based on rhizospheric fertilizer, and micro fertilizer should be sprayed by leaf surface.
Narrow the scope of contact.
The method of spraying nitrogen and potash fertilizer can be adopted.The method of concentrated fertilization can be adopted for phosphate fertilizer;Micro fertilizers can be divided into seed dressing, seed soaking and root dipping, so that trace elements can be confined within a small range of the root and not contact with a large number of elements.