Matters needing attention in the use of fertilizer for vegetables

Irrigating fertilizer is a way of topdressing to provide supplementary nutrition during the period of rapid crop growth, which is mainly used in vegetable growing season and widely used in greenhouse planting and open field cultivation. Because the effect of flushing fertilizer is fast, and it can only take effect after a few days of application, it has been widely used for many years. However, if the fertilizer is not applied properly, there will be problems with the growth of vegetables, so we should pay attention to some problems when flushing fertilizer.

1. Choose the type of fertilizer correctly.

There are many kinds of fertilizers, but not all fertilizers are suitable for flushing. Urea, ammonia, ammonium sulfate and ammonium nitrate are commonly used in nitrogen fertilizers, while potassium chloride, potassium sulfate or potassium nitrate are commonly used in potash fertilizers. It should be noted that even monoammonium phosphate and diammonium phosphate, which are water-soluble in the tree potential, should not be washed, because the mobility of phosphate fertilizer is poor after dissolution, it is very easy to be fixed, and can not be infiltrated into the soil layer with water, so its best application method is to apply it into the soil layer layer by layer, so as to improve its fertilizer use efficiency.

2. The amount of fertilizer per application should be simplified.

The amount of fertilizer should also be controlled properly, and the amount of fertilizer should not be increased at will, and the application rate of pure nitrogen should be controlled at 2-3 kg per mu for each planting of high-yield vegetables, especially nitrate nitrogen must be controlled below 2-3 kg per mu. The limited number of potash fertilizer is generally controlled at 2-3 kg per mu. Otherwise, the waste and loss of nutrients is large, which not only reduces the utilization rate of nitrogen fertilizer, but also may cause water pollution. It is generally appropriate to apply fertilizer twice during the whole growth period, and too much will have a normal adverse effect on vegetables.

3. Fertilising time

The proper timing of fertilising is better than if vegetables are carried out in the full fruit period and after picking, while Chinese cabbage is suitable in the heart-wrapped period. in autumn vegetable planting, it is necessary to choose the decrease of air temperature and soil mineralization, and it is appropriate for vegetables to grow in large quantities.

4. Irrigation quantity control

Border irrigation mode to prevent flood irrigation, canal irrigation, ditch depth is suitable for water, to prevent the loss of nutrients dissolved in water with water.

The above is an introduction to the matters needing attention in the use of vegetable fertilizer. I hope it can help you. If you want to know more about it, please follow us.