What fertilizer is good for broccoli topdressing?

Broccoli topdressing time

After the broccoli survives the first transplant, you can apply fertilizer to help it grow. The second fertilization should be done 15 to 18 days after transplanting, the third fertilization should be done 25 to 28 days after transplanting, and the fourth fertilization should be done 37 to 40 days after transplanting.

What fertilizer to use for broccoli topdressing

The first time fertilizing broccoli is with fertilizer for tree growth, the second and third times fertilization is with 75-90kg of urea and 60kg of potassium chloride per hectare, and the fourth time needs to be heavy with fertilizer for bud formation and potassium sulfate compound fertilizer.

Should urea or compound fertilizer be used for topdressing broccoli?

When planting broccoli, you can apply organic fertilizer and compound fertilizer, mainly nitrogen, phosphorus and potassium compound fertilizer. Pay attention to appropriately increase the amount of potassium fertilizer used. At the same time, foliar fertilization is also needed. Foliar fertilization mainly applies trace elements, which can increase the yield and quality of broccoli.

Broccoli topdressing method

After broccoli is planted, top dressing can be done, mainly with urea. During the growth period, chemical fertilizers should be applied frequently and thinly 4-5 times. During the head formation period, the growth rate is faster, and the amount of fertilizer should be increased, especially phosphorus and potassium fertilizers, to promote the growth of leaves and head. Timely spraying of vegetable stem strengthener can improve quality and enhance disaster resistance.

Principles of topdressing for broccoli

During the growth process of broccoli, the ratio of the macroelements N, P, and K is 14:5:8. At the same time, it also has different degrees of demand for trace elements such as boron, molybdenum, and magnesium. Therefore, when applying fertilizer to broccoli, it can effectively increase the yield based on these fertilizer requirements.

Broccoli topdressing dosage

When broccoli enters the rosette stage, top dressing can be carried out once, with 3-5 kg ​​of pure nitrogen and 6 kg of potassium oxide applied per mu. The second top dressing can be carried out after the rosette stage, with 2-3 kg of pure nitrogen and 4 kg of potassium oxide applied per 6 mu. In the early stage of flower head formation, 0.5% borax can be sprayed on the roots.

Precautions for topdressing broccoli

During the development of broccoli head, broccoli has a high demand for trace elements, especially boron, molybdenum and magnesium. Therefore, an appropriate amount of trace element foliar fertilizer can be applied before budding, which can increase yield and quality.