Vegetable planting techniques in out-of-season greenhouse

With the progress and development of society, greenhouse is used more and more widely. Greenhouse has excellent heat preservation effect, which can improve the listing of vegetables, while using this characteristic, out-of-season greenhouse vegetables rise. At present, spring vegetables on the market are grown out of season in winter through greenhouses, so how to grow them out of season? Let's take a look at the detailed introduction.

1. Build a greenhouse

First of all, we should choose an area with flat terrain, convenient water source, not too strong wind and sufficient light to build a greenhouse, preferably in the plain and hilly area. The greenhouse is mainly divided into winter warm greenhouse and spring and autumn greenhouse, in which winter warm greenhouse is planted in winter, while spring and autumn is suitable for planting in late autumn and early spring. After building the greenhouse, it is necessary to carry out disinfection and sterilization, which can be sterilized by high temperature or medicament, which is very effective for the prevention and control of diseases and insect pests. In the first half of the month, hundreds of dust agents can be sprayed inside the shed. After sealing, the chlorothalonil smoke remover is used for fumigation. About a week later, spraying carbendazim on the ground can achieve excellent disinfection and sterilization effect.

2. Soil preparation and fertilization

Before planting, we should first allocate the nutritious soil in the greenhouse, which is the key point for the growth of vegetables. when planting, we should generally choose fertile soil and apply organic fertilizer and inorganic fertilizer in combination with soil preparation. We should pay attention to the time and methods when fertilizing, one month before planting, pay attention to the amount of fertilizer, sprinkle the fertilizer on the soil, plough it to make it mix well with the soil, and ferment it before fertilizing. apply rotten fertilizer to avoid fermenting in the soil to produce toxic gas and endanger the growth of lettuce.

3. Select vegetable varieties

Out-of-season vegetables can not grow all vegetables, it is necessary to choose cold-resistant, disease-resistant, early-maturing varieties, so as to reduce the impact of low temperature on vegetables, such as zucchini, tomato, pepper, eggplant, cucumber, towel gourd and so on. In addition, spinach, cabbage and other vegetables can be planted in winter, the yield will be higher.

4. Field management

When planting vegetables, grab nest planting should be adopted, and organic fertilizer should be applied in holes during planting, which can improve the survival rate. In addition, slow seedling water should be irrigated in time after planting to maintain soil moisture. Different vegetables have different needs for water, which should be controlled to meet the growth needs of different vegetables. It is also necessary to loosen the soil and weed regularly to avoid weeds seizing nutrients and affect the growth of vegetables. Loosening soil can promote the root growth of seedlings more smoothly. In addition, diseased and weak plants should be removed in time to avoid spreading diseases and insect pests, and reasonable spraying of auxin and growth inhibitors should be carried out to strengthen the prevention and control of diseases and insect pests.

5. Heat preservation, moisturizing and cold protection

The key point of out-of-season vegetable planting is to do a good job of heat preservation, moisturization and cold protection, which may lead to freezing injury in three cases: lack of water in seedlings, low ground temperature, low night temperature, insufficient root nutrition and weak cold resistance. Therefore, in view of these situations, it is necessary to maintain soil moisture at all times; loosen the soil regularly to prevent soil consolidation; regularly spray foliar fertilizer to increase plant nutrition; regular ventilation, reduce carbon dioxide and other toxic gas emissions, can also make vegetables adapt to external temperature; cover multi-layer fresh-keeping film at night to reduce heat emission from the greenhouse.

The above is the out-of-season greenhouse vegetable planting technology, hope to help you, want to know more vegetable planting knowledge, please follow us.