Misunderstanding 1: Immediately after urea application, watered urea is an amido ammonia nitrogen fertilizer, which is easily soluble in water. It can be converted into ammonium bicarbonate after it is applied to the soil. It is absorbed and used by crops, water is applied immediately after surface treatment, and urea is easily absorbed. Loss of water, reduce fertilizer efficiency.
Myth II: Calcium, Magnesium, and Phosphor Fertilizers are Basic Fertilizers on Alkaline Soils Calcium, Magnesium, and Phosphorus Fertilizers are weakly acidic fertilizers that are insoluble in water and can be gradually converted to water-soluble phosphates that are absorbed by crop roots in weakly acidic conditions. Applying on the soil can not solve the urgent need of the crop seedlings for phosphorus, and it is easy to cause physiological phosphorus deficiency in crops.
Misunderstanding 3: Superphosphate surface application as top dressing Phosphorus is less mobile in the soil, moving in the range of 1-3 cm. Therefore, it is very difficult for the surface treatment to be transmitted to the crop rhizosphere, and therefore it is not possible to supplement phosphorus in the crop.
Misunderstanding 4: Ammonium bicarbonate with this method of water application often results in more fertilizer in the intake, and the crop grows differently and is difficult to manage. In the afternoon, the temperature of the greenhouse increases, and ammonia easily escapes from the soil and smears the lower leaves of the crop. Causes damage.
Myth 5: Organic manure dried manure and chicken manure have become the main basal fertilizers for producing greenhouse vegetables. However, for the convenience of application, vegetable farmers frequently dry human feces and chicken manure in the fields to dry and dehydrate. This practice will cause the fly maggots to reproduce and nitrogen will volatilize, which will result in damage to the fertilizer's nitrogen nutrient.
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