After the weather is high, the greenhouses are warm at night, the plants have strong respiration, the organic nutrients are much more consumed, and the plants are prone to grow up. At the same time, due to the large consumption of organic nutrients, the flower buds and fruits are not adequately supplied with nutrients. The number of fallen flowers and fruit, the number of deformed fruits increased, that is, the vegetable growers often said that "the tree is not sitting on the fruit." It is recommended that the vegetable farmers extend the air release time according to the temperature in the shed and avoid the lengthening by moderately controlling the fertilizer.
Anti-Japanese sunburn At the end of spring and summer, the light is strong, and the solanaceous vegetables are prone to sunburn, affecting the commerciality of the fruit and reducing the planting efficiency. Remind the friends of the vegetable farmers not to be too "squeaky" when the whole branch is thinned, and the leaves should be properly removed from the upper part and the lower part of the fruit, and the "sun umbrella" should be propped up to reduce the occurrence of sunburn, and the nutrients produced by the leaves are beneficial to the roots and fruits. delivery.
Antiviral diseases With the increase of temperature, aphids, whiteflies and other poisonous pests are becoming more and more active. If they are not treated in time, they will not only directly threaten the growth of vegetables, but also cause the spread of viral diseases in the shed. It is recommended that the vegetable farmers set up insect-proof nets at the air outlet and the front face to prevent the pests from moving into the shed. At the same time, the yellow sticky insect boards are suspended in the shed, and the number of insects is reduced in the shed. In addition, the high temperature and drought environment is conducive to the occurrence of viral diseases. Therefore, it is possible to avoid such a state in the shed by measures such as shading or watering and humidification. For sporadic virus-borne plants, the extraction is removed and the medicament is used for targeted control.
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