What are the physiological diseases in strawberry planting?

What are the physiological diseases in strawberry planting? How to prevent it? We also ask experienced netizens to introduce that strawberries are not only bright and beautiful, but also rich in amino acids, fructose, sucrose, glucose, citric acid, malic acid, pectin, carotene, vitamin B1, B2, nicotinic acid and mineral calcium, magnesium, phosphorus, potassium, iron and other nutrients needed by the human body. However, the physiological diseases of deformed fruit, cockscomb fruit and split fruit often occur in the process of strawberry planting, so the planting network collates the harm and prevention methods of the above three physiological diseases, which are listed in detail below for netizens' reference. 1. Strawberry abnormal fruit: the main symptom of strawberry abnormal fruit is that the fruit has lost its original shape, the fruit surface is convex and concave or subgourd-shaped, while the stiff fruit is a physiologically ripe fruit with very small fruit, poor taste and hard texture. The causes of the above symptoms are poor growth of strawberry plants, insufficient supply of assimilating substances, or too much fruit and loss of nutritional competitiveness. If the high temperature or low temperature is more than 25 ℃ or less than 5 ℃ during the flower bud differentiation of strawberry, the flower bud differentiation is blocked, the deformed flower is formed, and then the deformed fruit is developed. In addition, when the indoor relative humidity during the flowering and fruiting period is more than 85%, the anther is not easy to crack and the ovary is not completely pollinated, which also deforms the fruit and forms a deformed fruit. Prevention methods: 1. Select excellent varieties suitable for protected cultivation and cultivate age-appropriate and high-quality strong seedlings. 2. 2. Proper control of fertilizer and water, proper coordination of nutritional elements, and attention to prevent soil nitrogen bias. The amount of fertilizer applied is neither lacking nor exceeding, so as to fully meet the physiological needs of strawberry plant growth and development. 3. By means of controlling the protected facilities, it can fully meet the different needs of temperature, light and humidity in different growth stages. 4. Check regularly and remove deformed and ossified fruits at any time. Second, the cockscomb fruit of strawberry: the symptom is that two consecutive strawberry fruits grow on one stalk, which is called double fruit, and more than three strawberry fruits grow on one stalk, which is called chicken crown fruit, also known as lotus fruit. The causes of the above symptoms are the imbalance of temperature and light in the greenhouse, the imbalance of the proportion of root and crown, the formation of less nutrients, the increase of growth hormone secretion, the abnormal differentiation of flower buds, the imbalance of flower organ cell division, the swelling of flower buds and the flatness of stigma. Prevention methods: 1. Select early-maturing and deformation-resistant strawberry varieties. 2. According to the physiological needs of strawberries in greenhouse, we should not only supply sufficient nitrogen, phosphorus and potassium fertilizer, but also optimize the supply of various trace elements. 3. Coordinate the environment of light, temperature and humidity in the greenhouse during the period of strawberry flower bud differentiation. Third, the fruit cracking of strawberry: this symptom mainly occurs when the strawberry fruit is ripe, and there is a longitudinal crack on the fruit surface, which is called fruit cracking. The main cause of the above symptoms is that the temperature of strawberry fruit is too high during the expansion period, a large amount of water is irrigated after soil drought, and the fruit cells absorb a lot of water and split the pericarp. Prevention methods: 1. When planting strawberries in greenhouse, sandy soil with good soil physical and chemical properties and strong ability of water and fertilizer conservation should be selected. 2. Scientific irrigation should be carried out in the greenhouse to prevent soil drought and waterlogging in the greenhouse. 3. Strengthen the cultivation and management of strawberry to make the contradiction of its growth and fruit reasonable and coordinated. 4. Pay attention to prevent the strawberry fruit from direct sunlight in the greenhouse. When is the season for picking strawberries? Control methods of strawberry anthracnose