What are the common problems with cucumber fertilization?

What are the common problems with cucumber fertilization? Please try to avoid these five!

1. Avoid insufficient fertilizer

In the process of cucumber planting, many novice growers think that as long as the base fertilizer is applied, it is wrong to apply less fertilizer later. With the harvest of cucumber, nutrients are continuously consumed, and a stable and long supply of nutrients is needed. If the topdressing is neglected in the later stage, the cucumber is prematurely deficient due to lack of fertilizer, the effective harvesting period is shortened, the cucumber yield is decreased, and the deformed melons such as curved melons are increased. In order to ensure the needs of later nutrients, generally cucumbers need to be topdressed 8 to 10 times after planting, combined with the application of organic fertilizer.

2. Avoid improper application of foliar fertilizer

Foliar fertilizer application has an auxiliary fertilizer supply effect. Foliar fertilization should be carried out in accordance with the principle of deficiency and supplementation, and timely replenishment during plant growth. Pay attention to the following points when applying foliar fertilizer:

(1) Foliar fertilizers containing a large amount of hormones should be used with caution. The large amount of hormones contained in the leaf fertilizer will cause premature senescence of the plants, lower yield and lower quality of the plants.

(2) Spray the foliar fertilizer to avoid mixing with the fungicide.

(3) The use of foliar fertilizer is generally in the period of fruiting, and the nutrient is sufficient in the early stage. After the melon is planted, the reproductive growth is strong, and the required fertilizer is large. At this stage, the temperature is lower, the root activity is poor, and the nutrient absorption capacity is reduced. To meet the needs of normal melon, the foliar spray fertilizer can supplement the plant. The nutrients needed.

(4) Pay close attention to the changes of cucumber leaves, and timely supplement calcium, iron, zinc, boron and other elements to prevent the occurrence of deficiency syndrome.

What are the common problems with cucumber fertilization? Please try to avoid these five!

3. Avoid improper application of carbon dioxide gas fertilizer

Pay attention to the following two points when applying carbon dioxide gas fertilizer to greenhouse greenhouse cucumbers:

(1) When applying carbon dioxide gas fertilizer, the temperature in the shed should be above 15 °C, and the application should be started 1 hour after the curtain is opened, and 1 hour before the ventilation.

(2) Applicable period is usually when the cucumber is sitting on the melon, the carbon dioxide is very deficient; and it should be applied in the sunny morning when the light is sufficient, the concentration can be controlled at 1000~1500 mg/l; the cloudy weather can be applied less or not. It can't be applied in rainy and snowy weather.

4. Avoid excessive application of nitrogen fertilizer

Nitrogen fertilizer is the main fertilizer in cucumber production. Rational application of nitrogen fertilizer can increase cucumber yield. However, the application rate of nitrogen fertilizer on cucumber is limited. The application of nitrogen fertilizer in cucumber seedling stage is easy to cause the seedlings to grow long. The leaves of the long seedlings are large, the leaves are thin, the color is light, the stems are thin and long, the resistance is poor, and it is easy to be frozen. , easy to get sick. When the cucumber is overdose, the nitrogen fertilizer will be applied excessively. The whole plant will appear to be weak and strong, and the fruit set obstacle will occur, resulting in a large number of melons, and the young melon is slow to develop, which is prone to malformed melon and bitter melon.

What are the common problems with cucumber fertilization? Please try to avoid these five!

5. Avoid unbalanced fertilization

If the amount of fertilizer is too large, the salt concentration in the soil will be too high, which will hinder the cucumber from absorbing water and nutrients. This not only affects the growth of cucumber plants, but also the shape of the melons. At the same time, the proportion of fertilization should be appropriate. Cucumber requires nitrogen, phosphorus and potassium. The seedling stage is 4.5:1:5.5, the melon period is 2.5:1:3.7, the ratio of nitrogen to potassium is greater than phosphorus, and the potassium requirement is greater than nitrogen, so potassium fertilizer application can not be ignored.

In general, I hope that in the future cucumber planting process, we can try to avoid these problems, and then we can get a good income!

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