Techniques for fertilizing vegetables in sheds

The temperature in early spring is unstable and changes frequently, which will lead to the difficulty of fertilizing vegetables in the shed. If the method is not scientific, it will have a great impact on the normal growth of vegetables in the shed.That early spring shed vegetable fertilization how to apply fertilizer correctly?Here we introduce the shed vegetable fertilization technology.

How to properly fertilize shed vegetables

1, heavy base fertilizer light top fertilizer

The principle of applying enough basal fertilizer and less topdressing fertilizer should be mastered in the production of vegetables in sheds.The proportion of general base fertilizer should account for about 70% of the total amount of fertilizer applied, among which phosphate fertilizer can be increased to 70% due to slow decomposition.The top dressing of nitrogen and potassium should be 50%.High quality farmyard compost, farmyard manure must be fully mature, the usage amount per mu is about 5000 kg, high quality organic compound fertilizer per mu is generally 75 kg, not more than 100 kg.The rest of top dressing should be controlled flexibly according to the growth of vegetables and the regular period of fertilizer demand.

2. Apply organic fertilizer appropriately

Organic fertilizer nutrition is comprehensive and balanced, not only can improve the soil, improve the ability of fertilizer and water retention, but also can make the fertilizer release steadily, but also can adjust the balance of soil acidity.In addition to the application of farm manure, the application of bio-organic or bacterial manure should also be strongly advocated.This kind of organic compound fertilizer can supply a large number of element fertilizers and a variety of trace elements, supplement the organic matter to improve the soil, inhibit the harm of some diseases and insects in the soil, and avoid the concentrated supply of soil fertilizer.

Techniques for fertilizing vegetables in sheds

3, dressing appropriate ditch deep application

Because of the high degree of tightness of the vegetables in the shed, it is very easy to make the fertilizer volatilize when applying the fertilizer in the shallow layer, which not only reduces the fertilizer effect but also easily produces the harm of ammonia gas.Topdressing, a hole or strip, depth of 5?Six centimeters, two to the vegetable root system to maintain 8?It's 10 centimeters away.

4, according to the temperature of dressing

Nitrogen fertilizer, especially urea and producyion only when converted to nitrate nitrogen is easy to be absorbed by vegetables to the external cause is a absorption temperature conditions, when the relative temperature below 15 ℃, nitrifying bacteria and the activity will be subdued.Therefore, top application of nitrogen fertilizer should be carried out around noon in sunny days.For nitrogen deficient vegetables or leaf vegetables such as spraying 0.5%?Urea solution at 1.0% concentration will work better.

The above is the introduction of the fertilization technology of shed vegetables. The vegetable farmers who plant shed vegetables can use the above fertilization technology in a more scientific way according to the actual situation.