What fertilizer is good for cucumber topdressing?

Cucumber topdressing time

1. Germination period: The period from cucumber sowing to the first true leaf is called germination period, which generally lasts for 5-6 days. At this time, the soil needs to be kept moist and a suitable temperature needs to be provided to promote early and uniform germination of seeds and improve the survival rate.

2. Seedling stage: From the time when the cucumber seedlings grow 4-5 true leaves to before transplanting is called the seedling stage. This stage lasts about one month and is an important and critical period for flower bud differentiation and laying the foundation for early yield.

3. Initial flowering period: The initial flowering period refers to the stage from planting to the growth of the first flower of cucumber, which lasts about 25 days. It is a critical period for the transition from vegetative growth to reproductive growth. Vegetative growth and reproductive growth occur together. At this time, the first topdressing should be carried out, mainly with slow-release organic fertilizers to ensure a continuous supply of nutrients.

4. Fruiting period: The stage from when the root cucumber is firmly established to when the vines are pulled out is called the fruiting period. During this period, cucumbers have a very high demand for various nutrients, so it is necessary to focus on field water management, timely irrigation, and timely fertilization.

What fertilizer to use for cucumber topdressing

Cucumbers can be fertilized with nitrogen fertilizer once after planting and combined with watering, using about 10 kg per mu. Fertilizer can be added multiple times from the beginning of the expansion of the root melon to the end of the fruit harvest.

Should I use urea or compound fertilizer for cucumber topdressing?

After the cucumbers are planted, you can apply seedling-promoting fertilizer when watering. You can use urea. Before entering the fruiting period, in order to promote root development, you can dig holes in the soil and apply triple compound fertilizer. Fertilization can be applied with water flushing. In the peak fruit-bearing period, combined with spraying pesticides, you can spray potassium dihydrogen phosphate, calcium nitrate, and borax to increase yield.

Cucumber topdressing method

1. Increase the application of organic fertilizer

Organic fertilizer can be applied when planting cucumbers. This can provide various nutrients for the growth and development of cucumbers, reduce soil bulk density, and improve the physical properties of the soil. It plays an important role in increasing fruit yield, activating and improving the soil.

2. Reasonable application of fertilizers

Cucumbers have shallow roots and cannot tolerate concentrated fertilizers. Excessive fertilizer concentration will cause root burn. Cucumbers should reduce the use of chemical fertilizers, apply small amounts and multiple times, and topdressing should be done at any time during the growth process. The total amount is 47 to 53 kg of urea and 52 to 58 kg of potassium sulfate per mu.

3. Spray foliar fertilizer

During the peak period of cucumber fruiting, there is a great demand for fertilizer. At this time, the temperature is low and the root absorption capacity is reduced. In order to meet the nutritional needs of normal fruiting, fertilizer can be sprayed on the leaves. It is necessary to spray Harvest No. 1 in time to ensure the normal growth of cucumbers.

Precautions for topdressing cucumber

If the cucumber soil is too moist, do not apply topdressing, as this may easily lead to differentiation of female flowers, deformed cucumbers, and other physiological diseases. Fertilizing under high temperature conditions will cause a large amount of water evaporation from the plant leaves, which will also affect the effectiveness of the fertilizer. In addition, it is best to apply fertilizer in the early morning or evening.