Recently, some readers consulted how to manage tomatoes grown in greenhouses. For this reason, the reporter interviewed Zou Zhirong, a professor at the College of Horticulture of Northwest A&F University. Zou Zhirong answered the three aspects of temperature management, lighting management and water and fertilizer management. Temperature management "The greenhouse should see more light during the day and cover at night, pay attention to heat preservation and ventilation and dehumidification." Zou Zhirong said that as the weather gets colder, farmers should strengthen the maintenance work of the greenhouse, check and repair the greenhouse, such as replacement. Broken film, thick straw curtains, etc., to ensure the temperature inside the shed. It is worth noting that in terms of temperature and humidity control, it is necessary to ensure that the greenhouse temperature does not exceed 30 ° C during the day, not less than 10 ° C at night, and the humidity in the shed does not exceed 85%. Light management should uncover the cover of the greenhouse in time when the weather is fine, and fill the tomato crop. “Generally at 9:00 am, the curtain is the best at 4 pm to ensure that the tomatoes in the shed have enough light for photosynthesis.†Zou Zhirong reminded that even in the event of rainy days, use the high temperature at noon to let the tomatoes See the light for at least an hour to prevent damage to the growth of the tomato caused by insufficient light. Water and fertilizer management "Tomato irrigation should master a principle, that is, a small number of times, so that not only can control humidity, temperature, but also help save water." Zou Zhirong told reporters that 15 to 20 days of irrigation, mainly by drip irrigation, sub-membrane irrigation , remember not to flood the water, so as not to increase the humidity in the shed, the temperature is lowered, which has an adverse effect on the growth of tomatoes. At the same time, after the tomato is placed on the fruit, a lot of fertilization is applied. The fertilization should be based on potassium fertilizer. For the tomato with poor growth, some nitrogen fertilizer can be added. Usually fertilize once every 20 to 30 days. Disclaimer: Some articles on this website are transferred from the Internet. If legal rights of third parties are involved, please inform this website. phone Butterfly bean flower is also known as butterfly bean flower, blue butterfly flower, blue butterfly, butterfly blue flower, and other aliases such as butterfly sheep bean and bean bee. Its petals can be used for dyeing and eating, and are rich in vitamins A, C and E. It is rich in anthocyanins, which can improve immunity, help and promote skin elasticity and collagen production, and has antioxidant effects. Butterfly Pudding Powder,Blue Pigment,Butterfly Pea Flower Powder,Butterfly Pea Pollen Shaanxi Zhongyi Kangjian Biotechnology Co.,Ltd , https://www.zhongyibiology.com