Cultivation season. The occurrence of empty fruit in tomato was affected greatly by the cultivation season. When the same variety was grown in the greenhouse, the fruit rate of the tomato increased significantly during wintering and early spring cultivation. On the contrary, the incidence of empty fruit was lower in the autumn and winter and late spring.
Improper selection of species. The number of ventricles in common early-maturing varieties is small and prone to empty fruit; the number of ventricles in late-maturing varieties is large, which can prevent the occurrence of empty fruit. When the same variety was grown in winter greenhouse and early spring, the fruit rate of tomato cavity was high; in autumn and winter and late spring, the fruit rate of tomato was low.
Hormone stimulation during pollination. After pollination, there is no pollination and fertilization. Under the stimulation of hormones, the ovary enlarges, the fruit development speeds up, and the maturity period advances. If the hormone concentration is too high during flowering or repeated flowering, it is easy to form hollow fruit.
Bad weather effects. After fruiting and fruiting in tomato, if there is continuous rain and snow, the light is insufficient, and the internal nutrient supply of the fruit is insufficient, which causes the skin growth to be inconsistent with the growth of the flesh, and it is easy to form empty fruit. When the pollen is formed, it encounters high temperature and lack of light, so that the pollen is not full and can not be fertilized normally, so that the internal development of the fruit is incomplete and causes a cavity.
Inappropriate management measures. After fruit set, the amount of watering and dressing fertilizer are uneven, or the fertility in the late stage of growth and the result is insufficient, nutrition can not keep up, resulting in insufficient nutrients to form empty fruit; too much nitrogen fertilizer is also easy to form empty fruit.
Control measures: 1. Select the appropriate species. According to different cornices and time-to-market for solar greenhouses, choose varieties that are not likely to produce empty fruit. 2. The correct use of floral drugs. To use phytohormone correctly during the flowering period of the tomato, flowering is usually completed before 11 a.m. In the hot summer and autumn seasons, when hormones are used to decorate flowers, the spraying concentration should be reduced accordingly. 3. Management should be appropriate. In the use of fertilizers, organic fertilizers should be added to properly match nitrogen, phosphorus, and potassium fertilizers to avoid excessive application of nitrogen fertilizers. In terms of water supply, the number of days for watering and interval should be determined according to different growth periods and soil moisture levels; The seedlings are valued and the picking of the heart chambers cannot be premature. 4. Improve lighting and temperature conditions. Nursery and the resulting temperature should not be too high, especially to prevent the night temperature at the seedling stage is too high.
Improper selection of species. The number of ventricles in common early-maturing varieties is small and prone to empty fruit; the number of ventricles in late-maturing varieties is large, which can prevent the occurrence of empty fruit. When the same variety was grown in winter greenhouse and early spring, the fruit rate of tomato cavity was high; in autumn and winter and late spring, the fruit rate of tomato was low.
Hormone stimulation during pollination. After pollination, there is no pollination and fertilization. Under the stimulation of hormones, the ovary enlarges, the fruit development speeds up, and the maturity period advances. If the hormone concentration is too high during flowering or repeated flowering, it is easy to form hollow fruit.
Bad weather effects. After fruiting and fruiting in tomato, if there is continuous rain and snow, the light is insufficient, and the internal nutrient supply of the fruit is insufficient, which causes the skin growth to be inconsistent with the growth of the flesh, and it is easy to form empty fruit. When the pollen is formed, it encounters high temperature and lack of light, so that the pollen is not full and can not be fertilized normally, so that the internal development of the fruit is incomplete and causes a cavity.
Inappropriate management measures. After fruit set, the amount of watering and dressing fertilizer are uneven, or the fertility in the late stage of growth and the result is insufficient, nutrition can not keep up, resulting in insufficient nutrients to form empty fruit; too much nitrogen fertilizer is also easy to form empty fruit.
Control measures: 1. Select the appropriate species. According to different cornices and time-to-market for solar greenhouses, choose varieties that are not likely to produce empty fruit. 2. The correct use of floral drugs. To use phytohormone correctly during the flowering period of the tomato, flowering is usually completed before 11 a.m. In the hot summer and autumn seasons, when hormones are used to decorate flowers, the spraying concentration should be reduced accordingly. 3. Management should be appropriate. In the use of fertilizers, organic fertilizers should be added to properly match nitrogen, phosphorus, and potassium fertilizers to avoid excessive application of nitrogen fertilizers. In terms of water supply, the number of days for watering and interval should be determined according to different growth periods and soil moisture levels; The seedlings are valued and the picking of the heart chambers cannot be premature. 4. Improve lighting and temperature conditions. Nursery and the resulting temperature should not be too high, especially to prevent the night temperature at the seedling stage is too high.
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