The main reason is that the temperature of the spring planting tomato is unstable during the flowering period, and the low temperature may cause the fruit to fall, so it is necessary to strengthen the management of the flowering period from the aspects of fertilizer, water and pests.
1. Fertilization management: Tomato hi-fertilizer should be topdressed on the basis of applying base fertilizer, especially paying attention to applying potassium fertilizer. The base fertilizer is best to use decomposed farmyard manure and superphosphate. The top dressing should be placed in front of the fruit, and the fruit should be reapplied after the fruit is placed. When a flower is flowered 3 to 4 times, it can be preserved with a tomato spirit, etc., and the concentration is lower at low temperatures.
2, watering management: flowering results, plant growth requires more water, to ensure uniform supply of water. During the slow seedling period, the first ear of fruit is sitting, generally not watering, to prevent the plant from growing and falling, and the first ear is swollen, the second ear is sitting, increasing the number of watering, and watering when the young fruit is inflated.
3, plant adjustment: non-self-sealing top type tomato can use single-stalk pruning or double-stalk pruning. Take a single-stalk pruning, leave about 7 spikes per plant, remove the excess, remove the lateral buds in time, and timely thin the flowers and fruit to keep the fruit even. Generally, 7 to 8 leaves per ear, and when the fruit grows to a diameter of about 2 cm, the deformed fruit and the diseased fruit are removed, and 4 to 5 fruits are retained.
4, pest control: Diseases mainly include early blight, leaf mold, gray mold, ulcer disease. In the early stage of the disease, Bordeaux mixture can be used for prevention and treatment. In the later stage, 70% methyl thiophanate 800-1000 times and 75% chlorothalonil 600 times liquid spray can be used for prevention and treatment. The main pests are cotton bollworm, cabbage caterpillar, aphid, etc., and the use of Naonongshuo has a good control effect on cotton bollworm and cabbage caterpillar, and the effect of sudeli or egg egg is also good. Aphids can be controlled by imidacloprid spray.
1. Fertilization management: Tomato hi-fertilizer should be topdressed on the basis of applying base fertilizer, especially paying attention to applying potassium fertilizer. The base fertilizer is best to use decomposed farmyard manure and superphosphate. The top dressing should be placed in front of the fruit, and the fruit should be reapplied after the fruit is placed. When a flower is flowered 3 to 4 times, it can be preserved with a tomato spirit, etc., and the concentration is lower at low temperatures.
2, watering management: flowering results, plant growth requires more water, to ensure uniform supply of water. During the slow seedling period, the first ear of fruit is sitting, generally not watering, to prevent the plant from growing and falling, and the first ear is swollen, the second ear is sitting, increasing the number of watering, and watering when the young fruit is inflated.
3, plant adjustment: non-self-sealing top type tomato can use single-stalk pruning or double-stalk pruning. Take a single-stalk pruning, leave about 7 spikes per plant, remove the excess, remove the lateral buds in time, and timely thin the flowers and fruit to keep the fruit even. Generally, 7 to 8 leaves per ear, and when the fruit grows to a diameter of about 2 cm, the deformed fruit and the diseased fruit are removed, and 4 to 5 fruits are retained.
4, pest control: Diseases mainly include early blight, leaf mold, gray mold, ulcer disease. In the early stage of the disease, Bordeaux mixture can be used for prevention and treatment. In the later stage, 70% methyl thiophanate 800-1000 times and 75% chlorothalonil 600 times liquid spray can be used for prevention and treatment. The main pests are cotton bollworm, cabbage caterpillar, aphid, etc., and the use of Naonongshuo has a good control effect on cotton bollworm and cabbage caterpillar, and the effect of sudeli or egg egg is also good. Aphids can be controlled by imidacloprid spray.
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