As the saying goes: "One year is in the spring", people are used to the beginning of spring as the beginning of spring. In fact, after the beginning of spring, it is not spring, and there may even be a cold winter scene. In ancient China, the fifteen days of the spring were divided into three: “When the east wind thawed, the second locust began to vibrate, and the three waiting fish smashed the ice”, it was said that the east wind warmed and the earth began to thaw.

In early February, only South China really entered the spring. Temperatures in most parts of the country have been picking up, but some areas are still in the cold winter. The temperature in early spring is unstable, and it is prone to cold weather such as cold spring, strong wind cooling and snow freezing. Therefore, it is still necessary to continue to work on anti-freezing, cold-proof and snow-proof work in spring greenhouses. Let's take a look at the management measures for spring vegetables.

First, the management of greenhouse vegetables in spring

Spring greenhouse vegetables refer to melons in the harvest period from March to early July. Most of the melon varieties enter the vegetative growth period after the beginning of spring. At the same time as the vegetative growth and flowering results of the solanaceous vegetables, do the following cultivation management work.

1, insulation and antifreeze

There are two reasons for the chilling damage and freezing damage in the early spring season: First, the strong growth of plants, coupled with the increase of artificially managed water and fertilizer, has significantly reduced the cold resistance of the plants. After the spring, there is still a large cold current, which causes the tomato and fruit vegetables in the greenhouse to freeze and chill. To this end, we must continue to do cold and antifreeze work. Solanaceous vegetables have a large amount of growth and must be covered by a two-layer membrane in a greenhouse. Melons are more susceptible to freezing than cane fruits. In addition to covering with two membranes, straw bundles can be stacked in the skirt around the greenhouse to enhance the intrusion of cold air around the greenhouse; melon seedlings still in the nursery stage, at night The small arch shed can be covered with shade nets, straw curtains or non-woven fabrics to enhance the heat preservation capacity; in case of strong cold air, it is necessary to do anti-freeze insulation measures.

2, ventilation and ventilation

After the beginning of spring, as the sunshine time increases, the temperature rises and the humidity in the shed increases. In order to reduce the occurrence of pests and diseases and meet the environmental conditions of the growth and development of melons, the temperature and humidity management in the shed must be done carefully, depending on weather changes and plant growth. The situation, do a good job of opening the door and uncovering the film ventilation, closing the door and covering the film insulation management.

3, flower protection fruit

Low temperature will affect the fertilization results of many melons and vegetables, and it is easy to fall and fall. At present, the method of improving fruit is adopted. First, the plant growth regulator is applied to the ovary, and the plant growth regulator is applied according to the instructions to prevent the concentration from being too high and the phytotoxicity to occur. The second is to use artificial assisted pollination.

4, pest control

As the temperature rises and the humidity in the shed increases, the melons in the greenhouse are prone to gray mold, blight, blight and mites. Pest control should be combined with agricultural control and chemical control, such as temperature and humidity management in the shed, reducing the humidity in the shed, laying grass in the ditch, rationally fertilizing water, timely pruning, removing old leaves, spraying pesticides against pesticides, etc. .

5, open field sowing

After the beginning of spring, some open vegetables can be planted and planted. The varieties of vegetables that can be sown are: beans (edamame, kidney bean, cowpea) melon (soul, bitter gourd, cucumber, melon, pumpkin, melon), leafy vegetables (chives, spinach) , fungus (plant), eggplant (eggplant, pepper, tomato), can also sow spring radish and other kinds of vegetables, from March to April, need small arch shed or plastic film cover. More rain in spring, pay attention to clearing ditch drainage, and strictly prevent long-term water accumulation in the field.

Second, the spring greenhouse vegetable seedlings

The melons are sown in the electric hotbed before and after the spring, using early maturity, high yield, small development, short internodes, suitable for dense scaffolding, early appearance of female flowers, dense and easy to set fruit, low temperature and low light, moisture and resistance An excellent variety of diseases and other characteristics.

Third, the greenhouse cultivation of fruits and vegetables

Solanum. If the tomato is cultivated early, it can be planted after the beginning of spring.

Melons. After Yu Lichun, it was planted in plastic small arch sheds or plastic large and medium-sized sheds and sheds.

Fourth, the cultivation of open field vegetables

Mainly do a good job of fertilization, drainage after rain, bowls of beans and so on. Mature vegetables should be harvested in time. The cultivation of cruciferous vegetables (such as Chinese cabbage, green vegetables, radishes, etc.). It is necessary to do topdressing and field work to ensure seed purity and quality.

After the beginning of spring, the vegetable farmers must be alert to the strong cold air after the spring, and it is very important to do a good job in preventing cold.

Greenhouse Drip Irrigation System

Fertigation is using your irrigator to fertilise the plants and soils as you water, which is the most efficient and advanced practice of fertilization. Aid of pressure system (or natural divide terrain), the soluble solid or liquid fertilizer, according to the soil nutrient content and crop fertilizer regularity and characteristics of species, with the fat of with irrigation water, through a controlled water supply pipeline system, supplying, the compatibility, water through the pipe and drop head form drip irrigation, uniform, regular, quantitative, infiltration area crop root growth and development, make the main root soil always stay loose and appropriate moisture content, at the same time according to different crop fertilizer characteristics, environment and soil nutrient content in soil; Crops in different growth phase water requirement, the different development stages of the fertilizer rule is the demand of design, the water and nutrient timing quantitative, provided directly in proportion to the crops.

Greenhouse Drip Irrigation System,Greenhouse Micro Irrigation System ,Plant Drip Irrigation

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