(1) Pruning: Most of the greenhouse soilless tomatoes are infinitely grown, and the pruning method generally uses single dry pruning. After the flowering result, it can be hung with a rope, the upper end of the rope is hung on the wire above the greenhouse, and the lower end is attached to the stem of the base of the tomato plant, so that the plant grows upward and the rope is wound on the plant at regular intervals.

(2) Thinning fruit: Generally medium-sized fruit, the first ear leaves 4 fruits, the fruit type is large, and the first ear leaves 3 fruits. Similarly, the second and third ears do not allow too much results. In addition, dysplastic deformities should be removed in time. The use of thinning and fruit thinning measures can improve the grade of the tomato without reducing the yield.

(3) Picking leaves: For the old leaves that have shrunk and turned yellow and the leaves below the ears that have begun to be harvested, they should be removed immediately. The old leaves and diseased leaves should be collected in a special residual leaf collection bag and then transported out of the greenhouse to prevent the spread of pests and diseases.

(4) Tip: The tip of the plant is to remove the growth point of the plant after the last inflorescence of the plant is formed, so that it stops growing upward. After leaving the tip, you still need to leave 1 or 2 leaves for photosynthesis. Generally, the spring leaves are 8 to 10 spikes, and the autumn leaves are 6 to 7 ears, which is good for early maturity and timely pulling, which does not affect the preparation of the substrate. The spring 茬掐 tip can be completed in mid-May, and the autumn 茬掐 tip is best carried out in October.

(5) Leaf thinning: Some growth potential is very strong, and many hybrids of the leaves must be regularly leaf-leaved. In particular, the dense leaf clusters under the mature ear should be removed to facilitate sunlight transmission and air circulation.

(6) Pollination: Tomato is a self-pollinating crop, and the development of fruit depends mainly on auxin. The auxin is mainly brought in by pollen. After fertilization, the auxin is mainly secreted by the developing seed. After the seed matures, the auxin is no longer secreted, and the fruit is no longer inflated. Therefore, pollination and fertilization are important conditions for fruit development. The minimum temperature of 16 °C at night is a good temperature for pollen germination. In the sunny days above 20 °C, the pollen can be widely dispersed. There are many ways of pollination, mainly hormone treatment, mechanical pollination and insect-assisted pollination. Commonly used hormones are mainly p-chlorophenoxyacetic acid (Tomato Spirit, Anti-Phoalin, Tomato Tong), 2, 4-D, etc., to deal with the flowers that are about to open, the effect is better. In order to save labor, one inflorescence can be sprayed only once, when the first flower is open and the rest of the flowers are still flower buds. The concentration of auxin should be prepared in strict accordance with the instructions for use. Do not immerse the inflorescence in the auxin solution during treatment. Otherwise, even if the concentration is properly formulated, it will also cause phytotoxicity. The handle can be painted with a brush sputum solution. For auxin treatment, it is best to choose sunny days.

Mechanical pollination has artificial shock pollination and oscillatory vibration pollination. After flowering, it is irritated and pollinated every day at 10:11 am, and its pollination effect is better than hormone treatment. Large-scale vegetable production, using insect-assisted pollination is the best policy.

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