Can wheat be fertilized? How to fertilize it?

When topdressing wheat, there is indeed a certain controversy about topdressing urea or compound fertilizer in the actual process, but if we analyze this controversy from the perspective of agricultural planting, there is no right or wrong. The specific reasons are described in detail below.

Urea mainly supplements nitrogen, and compound fertilizer often refers to ternary compound fertilizer, which can supplement nitrogen, phosphorus and potassium. In terms of supplementary elements, compound fertilizer is more comprehensive than urea, and in terms of price, urea is lower than compound fertilizer.

Ah Qun asked many wheat farmers that when topdressing, more farmers chose urea. First, it has become a habit to choose urea for wheat topdressing in previous years, and the yield is ok, and it will not increase or decrease the yield; The second reason is that compound fertilizer is used as base fertilizer when wheat is sown, and it is not necessary to use compound fertilizer when topdressing. Just topdressing some nitrogen fertilizer to promote growth, and adding some foliar fertilizer to supplement medium and trace elements during "one spraying and three prevention" is enough; The third reason is that compound fertilizer is more expensive, topdressing urea will save some costs, the output is relatively stable, and it is afraid of spending more money, which has not yet achieved the effect of increasing production.

Farmers topdressing compound fertilizer for two reasons. 1. The wheat in the field has been deficient in phosphorus and potassium (potassium deficiency in wheat is mainly manifested in early blueness, poor green root development, short growth and bluish yellow leaves, etc.). ); The main manifestations of phosphorus deficiency in wheat are dark green leaves, purplish red, dull, short plants and few tillers. ). The effect of single topdressing with urea is limited, so it is necessary to cooperate with compound fertilizer to promote the normal growth of wheat. Secondly, our own plot, because it is not very fertile, after applying compound fertilizer a few years ago, the yield is higher than that of single topdressing urea. Although the cost increased a little when topdressing, the yield increased.

In fact, the choice of urea or compound fertilizer for wheat topdressing is related to many factors, such as the growth of wheat. If wheat grows well, urea can generally be topdressing. If the wheat is weak and lacks nutrients, compound fertilizer should be applied at this time. In addition to the growth of wheat, we should also consider the fertility of the soil itself, and at the same time, we should also consider the fertility preservation ability of the soil itself. If all is well, urea can be used as topdressing. On the contrary, compound fertilizer needs topdressing. Finally, it depends on the amount of base fertilizer and the proportion of base fertilizer application. If the proportion of nitrogen is relatively small and the dosage is insufficient, the main topdressing is urea. On the contrary, if the base fertilizer is high-nitrogen compound fertilizer, and there are relatively few phosphate and potash fertilizers, compound fertilizer can be selected when topdressing.

To sum up, the choice of urea or compound fertilizer for wheat topdressing depends on the actual situation of growing wheat, not on what others use. What suits you is right.