Fertilizer is easy to use, so it is loved by farmers, if not properly applied it is easy to waste the fertilizer and will easily cause fertilizer damage. Now let’s take a look at what to pay attention to when applying fertilizer, the taboo to fertilizer application.
1.Drying of organic fertilizer
Human manure and chicken manure have become the main basal fertilizer for the production of vegetables in greenhouses, but the vegetable farmers often dry and dehydrate human waste and chicken manure in the fields for the convenience of application. This method will cause maggot reproduction, nitrogen volatilization, loss of nitrogen nutrient of fertilizer.
2.Calcium magnesium phosphate is used as foundation fertilizer in alkaline soil
Calcium Magnesium Phosphate is a weakly acidic fertilizer that is insoluble in water and can be gradually converted to water-soluble phosphates to be absorbed by crop roots under weak acid conditions and applied to alkaline soils; It can not solve the urgent need of the seeding for phosphorus, which cause the physiological deficiency of phosphorus
3.The superphosphate surface withdrawal for top dressing
Phosphorus mobility in the soil is small, usually application of 0.5cm at the move range of 1-3cm. Therefore, it is difficult to reach the root of crops, which can not play a role in supplementing the body for phosphorus in the crop
4.Immediately watering after the application of urea
Urea is an amylose nitrogen fertilizer, soluble in water, after being applied into the soil, it must be decomposed to be converted into ammonium bicarbonate. It is absorbed and used by the crops, water immediately after the surface treatment is applied. It is easy to make urea lose with water and reduce fertilizer efficiency.
5.Ammonium bicarbonate is spread with water
This method often results in more fertilizer in the water inlets, the crops grow in different ways, difficult to manage, however the shed temperature rise high in the afternoon, ammonia gas escaped from the soil, smoked the leaves of the lower part of the crops, resulting in fertilizer damage.