I'm here to say that not all Shenyang compound fertilizer All can be flushed, or are suitable for flushing! Some conditions must be met before proceeding. The following points should be noted:
First of all, it is not recommended to apply slow-release fertilizer and controlled-release fertilizer, which are widely used in the north. Why? Because of this Compound fertilizer They are specially processed. Compared with ordinary compound fertilizers, their process is more complex. After being applied into the soil, they can slowly release the nutrients contained in the fertilizer, meet the needs of the whole crop growth period, and their utilization rate can be higher. Moreover, the cost of this fertilizer is not low. Its purpose is to release nutrients slowly, while the purpose of flushing is to see the effect quickly. Therefore, flushing is not appropriate.
2、 Nitrogen, phosphorus and potassium sold on the market Mixed fertilizer It is also not recommended to carry out flushing construction for this kind of project. Why? Diammonium and other fertilizers may be used as the main raw materials of phosphorus fertilizer in the mixed fertilizer, while monoammonium and diammonium and other fertilizers are not recommended to be washed with water, because phosphorus has poor mobility in the soil and is easy to be fixed. After washing, it is easy to be washed with water and soil loss!
3、 Phosphorus fertilizer is not recommended to be applied with water. In the second reason, we also said that phosphorus is very poor in mobility in the soil, easy to be fixed, and forms insoluble substances. In addition, when applied with water, more phosphorus is lost with water and soil! As we often use monoammonium and diammonium as base fertilizer, the effect will be better!
4、 When using, consider the water solubility of fertilizers. Some fertilizers are particularly good in water solubility; Some of them are generally water-soluble and cannot be completely dissolved; Some do not dissolve in water at all. For this problem, you can consult the fertilizer dealer or do the water solubility effect experiment in advance. Such as potassium nitrate and potassium sulfate, which are commonly used by us, can be flushed.
When the compound fertilizer meets these conditions, the flushing application can be considered. At present, the flushing application method of compound fertilizer is mostly used in vegetable planting areas, because it has quick effect and low cost! However, when applying compound fertilizer, there are some problems that should be paid attention to!
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