How to identify the advantages and disadvantages of water soluble fertilizer!

Now the water soluble fertilizer products on the market are various, let farmers friends do not know how to choose a high-quality water soluble fertilizer, most of the farmers friends have chosen to use a for a, the heart can not find a really suitable for crop water soluble fertilizer, the following small series of steps, the church to identify high-quality water soluble fertilizer.

1. Look at the formula

Water-soluble fertilizer is actually formula fertilizer, according to different crops, different soil and different water quality formulation, in order to maximize the need to meet crop nutrition, improve fertilizer utilization, reduce waste, so formula is the key to identify the quality of water-soluble fertilizer.

1) look at the ratio of NPK.For example, the commonly used high-potassium formula has the best ratio of nitrogen, phosphorus and potassium at 2:1:4 according to the nutritional requirements of the fruit setting period of general crops.

2) check whether the trace elements are complete and the proportion is reasonable.High-quality water-soluble fertilizer must contain all 6 trace elements, and must have a scientific ratio, because there is a problem of antagonism and synergy among various nutrient elements, it is not good to have a high content of one or several elements, but a scientific and reasonable ratio.

2, look at the content of good water soluble fertilizer selection is industrial grade or even food grade raw materials, high purity, and will not add any filler, so the content is relatively high, 100% can be used by the crop absorption of nutrients, nitrogen, phosphorus and potassium content can reach 60% or higher in general.Poor water-soluble fertilizers are generally low in content, and each less content will lead to different costs and different fertilizer prices.

3. To identify the water solubility of water-soluble fertilizers, it is only necessary to dissolve the fertilizer into clear water to see whether the solution is clear and transparent.If there is turbidity or even precipitation in the solution, the water solubility will be very poor, which cannot be used in the drip irrigation system, and the waste of fertilizer will be more.

4, smell good water-soluble fertilizer is made with high purity of raw materials, there will be a fragrant smell or no smell, aromatic smell is added vitamins, the human body needs vitamin supplement nutrition, crops need vitamins but also supplement their nutrition.Smelly fertilisers, which are either hormonally added or have too many harmful substances, are quick to use but do little to improve the plant's disease resistance or its continued yield and quality.

5. Comparison after preliminary screening of water-soluble fertilizers through the above simple methods, then field comparison is made to determine which water-soluble fertilizers should be selected according to the actual application effect.Good fertilizers don't work quickly because nutrients are absorbed and converted.A good water-soluble fertilizer can be applied two or three times, and it will show obvious differences in plant growth, crop quality, crop yield and disease resistance. The more it is applied, the greater the difference will be.