First, it is best not to use large amounts of unripe cake fat in greenhouses.
Second, do not use ammonium sulfate in greenhouses in winter. After application, high temperature and high concentration of ammonia and organic acids are easily generated locally, and roots are easily burned. Secondly, the application of ammonium bicarbonate is prohibited. Ammonium bicarbonate is a physiological acid fertilizer that will increase the acidity of the soil and damage the soil structure after application.
3. Under drought conditions, fruit trees in greenhouses should be carefully fertilized. If fertilization is conducted in the absence of moisture, not only can the fertilizer effect not be fully exerted, but also the concentration of the soil solution will suddenly increase and the roots of the fruit tree will be easily burned. Fertilization should be combined with irrigation.
4. Do not use too much diammonium phosphate in greenhouses in winter. In order to avoid ammonia volatilization, causing ammonia harm.
5. Be careful not to apply iron fertilizer into the soil. Because iron is easily converted by the soil into poorly soluble compounds, it loses its effectiveness. Iron does not easily flow on the leaves and can be sprayed evenly on the fruit leaf surface with a ferrous sulfate solution.
6. In winter greenhouses, a large number of elemental water-soluble fertilizers should be applied in combination with seaweed water-soluble fertilizers or humic acid-based water-soluble fertilizers. Can play a role in raising the temperature, nursing the roots, and avoiding damage to the crop roots.
YT-H706
YT-H706
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