Three days, the most important thing is the regulation of the crop growth environment. Growth environment, including temperature, humidity and lighting conditions.
1 Temperature: Xiyin vegetables, in the three days to properly control the temperature conditions, appropriate reduction of light, so as not to overheat the soil temperature, but also to avoid strong sunlight caused by burning. For example, celery, spinach, Chinese cabbage, etc.; Xiyang vegetables, we can do normal management.
2 Humidity: Sanfutian belongs to the high temperature and rainy season, and the rainfall is relatively large. Therefore, we try to use deep gully and high ridge cultivation to control the height of the groundwater level and control the soil moisture of the roots. After a rainy day, it should be drained in time to avoid physiological damage caused by water shortage caused by roots. Planting in greenhouses should be timely ventilated and dehumidified to reduce air humidity. If the weather is dry, drip irrigation or sprinkler irrigation should be carried out in the morning and evening to adjust the soil and air humidity in time. At the same time, we can combine water and fertilizer to integrate water and fertilizer when spraying water.
3 Illumination: For the shade crops, the shade net should be added to reduce the intense illumination. In order to avoid burning the leaves with strong light, or to inhibit the normal growth of crops due to excessive direct time. It should be noted that in the main lighting time phase, the sun should be released to increase photosynthesis.
4 Farming: The solanaceous vegetables should be properly pruned and smashed to reduce leaf overlap and enhance photosynthesis. Leafy crops should be properly applied with NPK, and it is not suitable for excessive nitrogen fertilizer, so as to prevent the leaves from growing too thin and causing high temperature and anti-storm. Vine crops, such as cucumbers, grapes, cowpeas, etc., should be framed in time to allow the vines to grow normally, so as to avoid excessive precipitation and cause rotten seedlings or plates. In the aspect of fertilization, we must pay attention to the supplement of potassium fertilizer, and apply it in a small amount of diligence, and supplement it with trace elements.
5 pests and diseases: Nowadays, it is the prosperous stage of insects such as aphids, heartworms, hanging silkworms, beet armyworms and cockroaches. The diseases are mostly diseases such as dryness, soft rot, blight, downy mildew, etc., for different crops and different diseases. For pests and diseases, we should consider comprehensive prevention and treatment according to various factors such as the growth stage, disease condition, insect condition and soil condition of vegetables, and select appropriate drugs to use drugs in time to avoid losses caused by pests and diseases.
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