Fertilization techniques of Cucumber in greenhouse with weak absorption but like Fertilizer tolerance

Cucumber in greenhouse has weak root system and poor absorption, but it likes fertilizer and has strong fertilizer tolerance. The high yield of cucumber can be achieved by understanding the growth characteristics of cucumber in greenhouse, skillful fertilization and scientific management.

Fertilization of cucumber in greenhouse

The nutrient soil for raising seedlings requires loose texture, good air permeability and sufficient nutrients, and the pH value is 5.5 ~ 7.2. The preparation method refers to the formula of tomato nutrient soil. In the preparation of nutritious soil, adding 23% calcium superphosphate of nutritious soil can promote the root growth of cucumber seedlings and cultivate strong seedlings. Using seedling bed to raise seedlings, when transplanting, transplanting or dipping roots with 2 kg microbial agent per mu can stimulate root growth, improve the survival rate of slow seedlings and cultivate strong seedlings.

Cucumber root system is mainly distributed in the plough layer of 15-25cm, the salt tolerance is poor, the amount of topdressing each time should not be too large, the times of topdressing should be more, and grasp the principle of "eat less and eat more".

1. Apply sufficient base fertilizer. 5000 kg per mu of rotten organic fertilizer, 20 kg of color 30 kg diammonium phosphate, 20 kg of potassium sulfate and 50 kg of calcium superphosphate were used as base fertilizer. For many years, the greenhouse needs to add 2 kg of ferrous sulfate, 2 kg of zinc sulfate, 1 kg of borax or 5 bags of good boron and 5 bags of good bacteria. After each fertilizer is evenly sprinkled on the ground, it only needs to be turned once, it can play a role, and the utilization rate is high.

2. Apply plant fertilizer skillfully. When planting, choose bio-organic fertilizer as colonization fertilizer, generally apply bio-organic fertilizer 40 Mu 50kg. When fertilizing, you can concentrate on the ridge line, then hoe, and then ridge.

3. Topdressing during the growing period. Generally, cucumber needs to be fertilized for 10 times after planting. After setting melon, cucumber yield is basically formed. Fertilization not only does not cause melon vine growth, but also promotes yield increase. Cucumber was fertilized for the first time at the initial stage of melon fruiting, applying urea 7 Mel 9 kg per mu (ammonium sulfate 12 Mel 15 kg) and potassium Sulfate 5 Mel 8 kg. In the future, every 5m / m / 10 days, water should be watered once according to the situation, and fertilizer should be irrigated every other time, and 10 kg of spring biological fertilizer can be applied with water each mu. Continuous high yield of cucumber should be ensured. Fertilizers should also be applied at a later stage. With the harvest of cucumber, the continuous consumption of nutrients, the need for stable and long nutrient supply, the neglect of topdressing in the later stage, the premature senescence of cucumber due to lack of fertilizer, the shortening of effective harvest time, the decrease of cucumber yield and the increase of abnormal melons such as curved melons. After 3 crops of cucumber melon, 20 kg urea was applied per mu to reduce the development of female flowers, promote the growth of cucumber "faucet" and avoid abnormal melons.

4. Extra-root topdressing. Extra-root topdressing was carried out after cucumber planting, before flowering, early fruiting stage and peak fruiting period, and 2 bags of spring suitable bacteria were sprayed with 30 kg water per mu to prevent premature senescence and reduce malformed melons.