Buy compound fertilizer should pay attention to what?

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/2018-01-23
/By Huifeng Runda

Buy compound fertilizer should pay attention to what?

Compound (mixed) fertilizer contains a variety of nutrients, compared with the application of simple fertilizer yield significantly, and the high concentration, less dosage, handling convenience, very popular with farmers. However, most farmers do not know that even if they buy qualified compound fertilizers, they may also cut their production due to improper selection or improper application. Therefore, during the critical period of spring plowing and preparing fertilizer, farmers should pay attention to the following points when they buy compound fertilizer:
Potassium sulfate compound fertilizer
First, according to the characteristics of the local soil to buy suitable compound fertilizer.
For the alkaline soil calcareous, acidic or neutral compound fertilizer should generally be purchased; alkaline or neutral compound fertilizers should be selected for acidic soils; for soils with low organic matter content, organic compound fertilizers or organic – Inorganic compound fertilizer.
Second, according to the kinds of crops to buy fertilizer.
For field crops, NPK fertilizer should generally be used; for vegetables, fruit trees and other cash crops, especially crops due to the need for more potassium, should use a higher potassium nitrogen NPK fertilizers; Avoid chlorine crops such as grapes, potatoes, tobacco, sugar beet and other should not be applied to potassium chloride, ammonium chloride as a raw material for the production of high chloride ion compound fertilizer, potassium sulfate compound fertilizer is more appropriate.
Third, according to the nature of fertilizer to buy fertilizer.
The national standard GB15063-2001 stipulates that the effective nutrient content of compound fertilizer (compound fertilizer) is divided into three types: high concentration NPK≥40%, medium concentration NPK≥30%, low concentration NPK ≥ 25%, excluding trace elements and the amount of elements; water-soluble phosphorus content ≥ 40% and so on. Different nutrient content, the number of applications and technical requirements are also different.
Fourth, according to fertilizers to buy fertilizer.
In order to improve the fertilizer efficiency, different fertilizers should use different types of compound fertilizer. Such as the base fertilizer, to buy granular compound fertilizer, or purchase slow release fertilizer compound fertilizer, fertilizer, beneficial to improve the utilization of nitrogen. Top dressing to choose when water-soluble fast-acting fertilizer. Humic acid compound fertilizer base effect is better than topdressing effect.