At present, it is time for the tomatoes to be planted in greenhouses. At this time, there are many climate changes, high-temperature droughts and continuous heavy rain coexist, and it is difficult to manage. In order to complete planting, the following technical measures are proposed:
Before the planting, the seedlings are treated with pesticides to prevent the occurrence of pests and diseases in the greenhouse. The pests and diseases are caused in a large area 1 to 3 days before the planting. The control of whitefly, spotted fly can be used imidacloprid, buprofezin, etc., fungal disease can be used Prok , carbendazim, etc., virus diseases available plant protection spirit, virus A and so on.
At the time of planting, the environment-adjusted pre-planting greenhouse-covered drip-free membrane before the planting, the front foot rolled up about 1 meter high, and the rear opening vents, the shed film is best to cover the shade net to form a pergola, which can play a role in shading, reduce the shed Internal temperature, weakened light intensity. Pay attention to increase ventilation and try to avoid high temperature, drought, and strong light conditions.
Planting time is usually planted in the afternoon near the evening, which is conducive to slow seedlings.
When watering, planting should be done with enough water to 20-30 square meters/mu. After the emergence of the soil, keep the soil moist, so that the small water ground pouring, each watering volume should not exceed 10 square / acre.
Good prevention and control of insecticides in autumn has resulted in a large number of insecticide-borne vectors, coupled with a wide range of insect-hosts and activities, which provide suitable environmental conditions for the transmission, occurrence and harm of tomato virus diseases. Therefore, the prevention and control of whitefly and whitefly is the key.
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