Today, the autumn equinox

In the "Autumn Equinox" solar term, greenhouse farming management needs to consider climate change, crop growth stage and disease and pest control and other factors.

First, environmental regulation

Temperature Management:

Flexibly adjust the temperature in the greenhouse according to the needs of crop growth. Such as tomatoes, cucumbers and other temperature-loving crops, after entering the flowering and bearing period, the temperature requirements are higher, which can be controlled at 23℃-28℃ during the day and 15℃-18℃ at night.

During the day, when the temperature is high, it can be properly ventilated and cooled; When the temperature is low at night, pay attention to heat preservation to ensure that the temperature in the shed is not lower than the lower limit temperature for crop growth.

Humidity Management:

After the autumn equinox, the temperature difference between day and night increases, and attention should be paid to controlling the humidity in the greenhouse to avoid excessive humidity causing diseases.

In rainy weather, minimize watering and other operations to increase humidity, and adjust humidity by extending watering intervals, water control and hoeing.

On sunny days, proper ventilation can be used to remove moisture and keep the air circulating in the shed.

Light Management:

To ensure the light transmittance of the shed film, choose a shed film with heat preservation, good light transmittance, and the function of dripping and fog elimination.

Clean the shed film regularly, remove dust and debris, and improve light transmittance.

When the light is insufficient, artificial light sources such as fill light lamps can be considered to supplement the light.

2. Water and fertilizer management

Water Management:

According to the needs of crop growth and soil moisture reasonable watering. Generally, water-saving irrigation methods such as drip irrigation under film or dark irrigation are adopted.

When watering, it is necessary to avoid flooding, so as not to increase the humidity in the shed and cause disease.

The water requirement of fruit in the expanding stage is large, so the watering times and watering amount can be appropriately increased.

Fertilizer Management:

Apply fertilizer according to the growth stage and nutrient requirements of the crop. In the early stage of growth, nitrogen fertilizer was mainly used to promote vegetative growth. Phosphorus, potassium and trace element fertilizer should be added to promote reproductive growth and fruit quality.

The fertilization method can be applied by flushing with water or spraying on the leaf surface to ensure the uniform supply of nutrients.

Third, crop management

Pruning:

Remove old leaves, yellow leaves and diseased leaves in time to improve ventilation and light transmission conditions.

According to the growth habits of crops, pruning, such as tomatoes, cucumbers and other crops that need to be planted or hung, should be promptly led to the vine shelf or hanging.

Sparse flowers and fruits:

According to the crop growth situation and market demand for thinning flowers and fruits, remove too much, too dense, malformed or stunted fruit, in order to improve fruit quality and yield.

Pest control:

Strengthen the monitoring and early warning of pests and diseases, timely detection and prevention of pests and diseases.

A comprehensive control strategy combining agricultural control, physical control, biological control and chemical control is adopted to reduce the use of chemical pesticides.

In rainy weather, we should pay attention to prevent diseases; In fine weather, protective fungicide can be sprayed after pruning and pruning.

Iv. Other management

Shed disinfection:

Sterilize the shed regularly to kill bacteria, eggs and other harmful organisms.

Clean up the garden:

Timely clean up residues such as plant residues, fallen leaves and weeds in the garden to reduce the breeding places of diseases and pests.

After cleaning the field, soil tillage measures such as tilling and rotating tillage should be carried out to improve the soil structure and fertility level.

"Autumn Equinox" solar term greenhouse farming management needs to comprehensively consider environmental control, water and fertilizer management, crop management and other management factors. Through scientific and reasonable management measures, we can ensure the healthy growth of greenhouse crops and improve the yield and quality.