After summer, with the changes of temperature, light and other environmental factors, loofah plant stems and leaves grow faster, the roots of aging faster, if not properly managed, can easily cause premature plant failure. At this time, it is recommended that the vegetable growers take the following measures:
First, reasonably stay melon. When planting gourd in winter, vegetable growers usually take five or six leaves to leave a melon, which can ensure that the melon strips get adequate nutrition, but also ensure that plants grow vigorously. When planting summer loofah, due to the rapid growth of plants, vegetable farmers generally leave three or four leaves to leave a melon, but the vegetable farmers must pay attention to plant growth, according to the growing trend of decision to stay in the melon. On a vigorously growing tree, you can leave a melon on three or four leaves; on a weakly growing tree, you should reduce the number of melons and change to five or six leaves to leave a melon. Otherwise, the plant will become overburdened. Stems and leaves have poor growth and development and eventually cause premature plant failure. It is recommended that the vegetable grower adjusts at any time according to the growth status of the plant, and reasonably keeps the melon.
Second, adjust the temperature of the greenhouse. Luffa plants grow at a suitable temperature of 25-32°C during the day and 15-20°C at night. After the summer, the indoor temperature rapidly rises, so take timely measures to reduce the temperature of the greenhouse. First of all, to strengthen ventilation, open doors at noon, increase ventilation openings. Secondly, the shade net is set. The shade net mainly reduces the temperature of the booth by blocking part of the sunlight and reducing the heat. In the morning and afternoon, the light is weak. In order to increase the photosynthetic efficiency, the shade net should be used after 11am to 3pm. Again, rational watering reduces ground temperature. Water evaporation will absorb a lot of heat, and reasonable watering is also an important measure to reduce the temperature inside the greenhouse.
Third, Qiao water. The loofah is hi damp, not dry, suitable for soil moisture content of 70% -85%, should be watered in time to prevent premature loss of loofah plants due to drought. Farmers should pour water after topping in the weather, and pour water after two days, and pour water into the water two days before harvesting. This can promote the growth of melon strips and plants and prevent premature aging. During the result period, vegetative growth and reproductive growth are very strong, and there is a large demand for nutrients. Therefore, vegetable growers should pay attention to timely topdressing to ensure sufficient nutrient supply.
For scientific fertilization, it is best to test soil before planting and fertilize according to soil nutrient conditions. Because of the different fertilization habits of vegetable growers, the nutrient status of greenhouse soils varies greatly. Some pothouses may have excessive potassium fertilizers and insufficient nitrogen fertilizer. Some greenhouses have excessive nitrogen fertilizers and insufficient potassium fertilizer. The situation is different. has a difference. The reporter learned from an interview with the Shouguang Soil and Fertilizer Testing Center that the content of potassium in the soil of a vegetable greenhouse in Luocheng Street, Shouguang City, has reached 2000 mg/kg, far exceeding the demand of plants. If potassium fertilizer is applied at this time, the normal growth and development of loofah must be affected.
Fourth, prevent pests and diseases. In general, the loofah has strong disease resistance and less disease, but the high temperature and high humidity environment in summer greenhouses can easily lead to high incidence of bacterial diseases and viral diseases. Therefore, prevention measures should be strengthened in management. Bacterial diseases mostly occur after falling, so agricultural streptomycin should be sprayed 3000 times before falling. For the prevention of viral diseases, the emphasis is on the prevention and control of transmission of pests and insect pests: the establishment of insect-repellent nets to prevent transmission of insect pests inside and outside the shed, the suspension of yellow armyworm board, the killing of insect pests inside the shed, and the observation of insect pests; timely administration of drugs such as acetamiprid , imidacloprid and so on. At the same time, it is necessary to combine the spraying of schistosinomycin and mushroom proteins to increase the disease resistance of the plants and prevent the virus diseases.
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