Northern greenhouse vegetable planting technology, vegetable greenhouse planting technology

The beard I grow in my greenhouse now is now cloudy and cloudy, and there is any way to keep it growing.

The emergence of greenhouses has made it possible to produce out-of-season vegetables, which are also loved by farmers due to their good thermal insulation properties. Greenhouse vegetable planting should first pay attention to leveling the land, renovating and weeding, and at the same time adding some base fertilizer. When setting up a scaffold, you should find a good location and control the size.

Choose shade-tolerant, disease-resistant and high-humidity resistant vegetables, which are more suitable for growing in a greenhouse environment. To control the temperature, do not go higher than 33. Watering is best done using drip irrigation.

1. Level the land.

The first step in growing vegetables in a greenhouse is to level the land. The land needs to be renovated and weeded, and some base fertilizer can be added to the soil depending on the vegetables grown. The fertilizer should not be too thick, otherwise it will lead to soil hardening and other deterioration.

2. Reasonable scaffolding.

The span of the greenhouse should not be too large, generally not more than 12 meters, and the length should not exceed 120 meters. It is best to have earthen walls on three sides, which can be better insulated. At the same time, it is necessary to choose the right steel frame, which can play a better supporting role.

Choose a drip-free film to cover the shed surface, which can increase the temperature inside.

3. Vegetable selection.

Due to the characteristics of the greenhouse itself, the selection of vegetables should meet several important points. The first is that the light requirements are low, the light time in winter itself is not long, and the cover of the greenhouse will reduce the entry of sunlight, so be sure to choose shade-tolerant vegetables. The second is strong resistance, the ventilation capacity of the greenhouse is average, so the plant must have the ability to resist diseases.

The third is high humidity resistance, the humidity in the greenhouse is often very high, and it is difficult to control, so vegetables must be resistant to high humidity.

Fourth, regulate the temperature.

One of the advantages of greenhouses is that they have good heat preservation, so as to provide a growing environment for some vegetables. However, the temperature should not be too high, it should be controlled below 33, and it should be cooled down immediately after it is higher than this temperature, and the shed can be opened for ventilation.

5. Drip irrigation and watering.

Due to the high humidity of the greenhouse, it is not advisable to water too much, and it is generally better to use drip irrigation. Drip irrigation itself also saves water and is a great and affordable way to do it.

The structure of the greenhouse is generally made of steel and wood and bamboo, which has good earthquake resistance and wind resistance; The cultivation mode is generally divided into spring cultivation and autumn and winter cultivation, vegetables can not be ventilated immediately after planting, the temperature in the greenhouse can be raised, and different shade nets are selected according to different seasons, which is conducive to the growth of seedlings.

In the greenhouse vegetable planting technology, there are many scaffolding structures, which are widely used at present, such as the scaffolding structure made of steel and the scaffolding structure made of wood and bamboo, both of which have good earthquake resistance, and can also protect the vegetables in the greenhouse when the wind blows.

In greenhouses, it is generally divided into spring cultivation and autumn and winter cultivation, and can also be cultivated according to the needs of the market; The early planting time in spring is generally in February and April, and the planting time is around May; The planting time for autumn and winter extended cultivation is generally in October, and planting is in early November.

When the planted vegetables are planted, they cannot be ventilated immediately and need to be closed for a week, especially for tomatoes, cabbage and other crops, which need to increase the temperature in the greenhouse, which is more conducive to the growth of seedlings; When the vegetables are in the growing season, they need to be watered once a day and fertilized once every 3 days.

In summer, the light is strong, and it is necessary to choose the most suitable shade net according to the variety and scale of vegetables planted, and the crops cultivated in the short term generally choose black shade net; In winter, the sun is not strong, but the seedlings in the greenhouse may be sunburned, so you need to prepare a white shade net.

When planting greenhouse vegetables, the soil needs to be leveled and loose, add base fertilizer to ensure that the soil is loose and fertile, and it is also necessary to open the greenhouse regularly for ventilation to avoid the slow growth of vegetables due to high greenhouse temperature, and the humidity in the greenhouse is high, the amount of watering does not need to be too large, and drip irrigation technology should be used to avoid water accumulation in the soil.

1. Soil conditions

When planting greenhouse vegetables, it is necessary to ensure that the soil is loose and fertile, and the soil should be leveled and loose, renovated and weeded, to ensure that the soil is loose and breathable, which is conducive to the growth of vegetable roots, and at the same time, base fertilizer can be added to the soil to ensure the soil nutrient content, which is conducive to the lush growth of vegetables.

2. Temperature conditions

When planting greenhouse vegetables, the temperature in the greenhouse needs to be controlled, the greenhouse has very good heat preservation, which is conducive to the growth of vegetables, and at the same time pay attention to the temperature can not be too high, higher than 33 degrees when the greenhouse needs to be opened for ventilation, to avoid the slow growth of vegetables caused by too high temperature.

3. Watering method

When planting greenhouse vegetables, the humidity of the greenhouse itself is relatively high, so when replenishing water for vegetables, it is not conducive to the discharge of water, which will lead to soil water accumulation and cause vegetable root rot, and should be used in the way of small water drip irrigation, which can also save water.

4. Vegetable selection

In winter, the sunshine is weak, and the greenhouse will block part of the light, so you should choose to plant shade-tolerant vegetables, and the temperature in the greenhouse is higher, and the humidity is also larger, so the selected vegetables should also be humid and high temperature resistant, and at the same time, the ventilation in the greenhouse is general, easy to produce pests and diseases, so you should also choose pest-resistant vegetables for breeding.