At present, the temperature difference between day and night is increasing, and the temperature in the shed is suitable, which is the golden period for the production of vegetables in the facility. In this regard, vegetable farmers should seize the favorable opportunity to do a good job in the careful management of greenhouse vegetables, in order to obtain higher yields.
Strengthen temperature and humidity management
With the increase of the temperature difference between day and night, the environmental conditions of suitable temperature and high humidity are gradually formed in the shed, which creates favorable conditions for the occurrence and infection of diseases. Pay attention to heat preservation at night, and close the vent appropriately according to temperature changes; Or put the insulation quilt in time to prevent the phenomenon of relative low temperature at night, causing poor growth of vegetables. At the same time, watering at the right time, not too much water at one time. Gradual ventilation to keep the humidity of the shed suitable. For vegetables with thin skin and easy cracking, cold wind prevention should also be strengthened.
Prevent diseases in time
With the increase of the temperature difference between day and night and the formation of a high humidity environment in the shed, some vegetables cultivated in the arch shed show a high incidence trend. For example, cucumbers in the full fruit stage, downy mildew is serious, and growers should spray pesticides in a timely manner to prevent and control the temperature and humidity at the same time, such as downy mildew carb hydrochloride and fluopyramide, enoylmorpholine or frost urea cyanide. Pay attention to strengthening the nutrient supply of leaves, spraying foliar fertilizers with amino acids or alginic acid to improve the resistance of leaves and plants.
During this period, there is a high incidence of bacterial diseases of nightshade vegetables, such as bacterial spotted disease and bacterial canker disease of tomatoes, bacterial spot disease of peppers and eggplants, etc. It is necessary to reduce the wound while reducing the humidity in the shed, and choose sunny weather for pruning and wiping operation, which is conducive to rapid wound healing and reduces the probability of bacterial disease infection. In the early stage of the disease, copper preparations, chunleimycin or thiazolezinc and other agents can be used for prevention and treatment.
Do a good job in plant type adjustment and growth control
In the fruiting period, there is a contradiction between vegetative growth and reproductive growth, reasonable temperature difference environment, plants are easy to grow, field management should be appropriate to control the growth, in order to facilitate the transfer of nutrients to the upper part of the fruit plant, to ensure the normal demand for fruit expansion. Carry out the eradication of side branches in time to avoid nutrient contention. For sheds with poor soil fertility and weak plant growth caused by root injury in the early stage, pay attention to strengthening root maintenance, and apply alginic acid fertilizer with water to promote plant strength.
Ensuring a nutritious supply
At this stage, the temperature difference between day and night is obvious, and the vegetables in the shed grow vigorously, and the demand for nutrients is more urgent. The nutrient solution that is applied with water can choose products that promote rooting and an appropriate amount of water-soluble fertilizer. Pay attention to strictly control the amount of water-soluble fertilizer to avoid the formation of root salt ion accumulation poisoning, and also affect the growth and overall yield of plants. Appropriate supplementation of medium and trace elements, such as calcium, magnesium and other elements, can reduce the incidence of physiological diseases (tomato umbilical rot, tendon rot, cucumber leaf "dry edge" phenomenon, etc.).
Autumn vegetable management to keep these points in mind is introduced here, I hope it will be helpful to everyone. If you want to buy high-quality and high-yield vegetables, you can download the seed bank App, and the country's excellent vegetable varieties are available for everyone to choose.
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