Scientific management and precautions before and after slow seedling stage of cucumber in greenhouse

In the winter greenhouse cultivation of cucumber, want to achieve good yield and quality, management before and after the slow seedling period is essential, the current temperature continues to decline, how to scientific management? What are the precautions?

I. Slow seedling management

In order to promote the slow seedlings, the greenhouses should be sealed and insulated. Some farmers have now added a small arch shed using a 2-film insulation method to increase the temperature and keep warm.

1, temperature control

Do not exceed 30 ° C during the day, and keep the temperature at least 15 ° C at night.

2, uncover the grass

Open the cover early on a sunny day, and uncover the arch shed when the temperature in the shed rises to 26 °C. In the evening, first cover the small arch shed, then put the grass hoe, and do not let the wind slow down.

3, cultivating strokes

At this stage, the root system of the plant is still underdeveloped, and it can be meticulously cultivated. From shallow to deep, the soil is firstly raked, and the soil layer inside the ridge or ridge is finely raked to keep the soil loose, and the soil is deep and wet. the goal of. At the same time, it can increase the oxygen content of the soil and promote the development of roots to enhance the absorption capacity and cold resistance of the plants. But when you are scratching, be careful not to hurt your roots.

Second, post-emergence management

According to the current weather, the general slow seedling period is about 10 days.

1. Water and fertilizer management

Small water is poured into the seedling water to increase the ground temperature, increase the soil water content, and avoid watering when flowering. If it is watered during flowering, it is easy to grow. At the same time, in order to promote rooting, raise seedling potential, and prevent freezing damage, a small amount of decomposed human excrement can be applied with slow seedling water.

2, cultivating loose soil

After the seedling water is slowed down, the surface starts to dry and begins to be ploughed to increase the ground temperature, protect the earthworm, and promote root development.

3, temperature control

In the temperature management, keep the daytime temperature at 25-30 °C, when the shed temperature rises to 28 °C, the wind can be released. When the shed temperature drops to 26 °C, the air vent is closed, and the night temperature is preferably kept at 10-15 °C.

4, disease prevention

During this period, 45% chlorothalonil aerosol can be smothered at night to prevent the occurrence of downy mildew. Generally 200-250 grams per acre, divided into 4-6 in the shed, ignited with a dark fire such as incense or cigarettes, closed shed, smoked overnight, open the air outlet around 8 am the next day, the smoke will be released.

The above is the management matters that need to be paid attention to before and after the slow seedling period of greenhouse cucumbers compiled by Huinong. This is the key period for cucumber planting in greenhouses. The above management matters must pay more attention.

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