Soilless cultivation refers to a cultivation method in which a nutrient solution is poured without using natural soil. In the production of vegetables, it has the advantages of high yield, early maturity, water saving, light disease, and the ability to produce pollution-free quality vegetables. According to experiments, the cost of the nutrient solution used to produce 1 kilogram of vegetables is only a few cents. Urban residents can use verdant, roofless vegetables on the roof. The method is simple and effective. First of all, the soilless cultivation techniques of tomatoes are described as follows: First, pruning: Greenhouse soilless cultivation tomato mostly uses infinite growth type varieties, pruning methods generally use single stem pruning. After the flowering results, the rope can be hung, the upper end of the rope is hung on the wire above the greenhouse, the lower end is on the stem of the tomato plant base, so that the plant grows upwards, and the rope is periodically wound on the plant. Second, fruit thinning: generally medium-sized fruit, the first ear to stay 4 fruit, fruit-type varieties, the first ear to stay 3 fruit. Similarly, the second spike and the third spike cannot make the result too much. In addition, dysplastic malformations should be promptly removed. Using sparse fruiting and fruiting measures can increase the grade of the tomato and will not reduce the yield. Third, picking leaves: for the old leaves shrinking yellowing and the leaves under the ears that have begun harvesting should be removed immediately. The removed old leaves, diseased leaves, etc., should be collected in specialized debris collection bags, and then transported out of the greenhouse to prevent the spread of pests. 4. Tips: Tips: After the last inflorescence of the plant is formed, the tip of the plant is removed and the growth point is stopped. One or two leaves still need to be left after the tip to facilitate photosynthesis. General spring retention of fruit 8-10 spike after the tip, autumn leaves 6-7 spike after the tip, in order to facilitate early fruit ripening and pull on time, does not affect the matrix preparation after the grate. The spring tip can be completed in mid-May, and the autumn tip is best performed in October. V. Sparse leaf: Some hybrids with strong growth potential and a lot of leaf blades must be sparsely leafy. In particular, the dense leafy groves under ripening must be removed to facilitate the transmission of sunlight and air circulation. 6. Pollination: Tomatoes are self-pollination crops, and the development of fruits depends mainly on auxin. Auxin is mainly brought in by pollen. After fertilization, auxin is secreted mainly by the developing seed. After the seed matures, it no longer secretes auxin and the fruit no longer expands. Therefore, pollination and fertilization are important conditions for fruit development. The lowest temperature of 16°C during the night is a good temperature for pollen germination. During the daytime above 20°C, the pollen can be dispersed. There are many methods of pollination, including hormone treatment, mechanical pollination and insect-assisted pollination. Commonly used hormones include chlorophenoxy acetic acid (tomato spirit, anti-dropping ingredient, tomato pass), 2,4-D, and so on. The treatment of flowers that are about to open will have better results. In order to save labor, an inflorescence can be sprayed only once, when the first flower is open and the rest of the flowers are still buds. The concentration of auxin should be prepared strictly according to the instructions. Do not immerse the inflorescence in the auxin solution during processing. Otherwise, even if the concentration is properly prepared, it will also produce phytotoxicity. You can use a brush pen to coat the flower stalk. Auxin treatment, the best choice for sunny days. Mechanical pollination includes artificial oscillating pollination and oscillating pollination. After flowering, the pollination and pollination were performed at 10-11 am every day, and its pollination effect was better than hormone treatment. Large-scale vegetable production, the use of insect-assisted pollination is the best policy. China Wholesale almond Welcome to Bossgoomall.com. almond products are sold on the Bossgoomall website. The products sold on the website include almond, food processors, home appliances, cheap food processors, cheap essential oil, beauty & health, essential oil, the Agriculture products sold on Bossgoomall.com are of high quality and are widely loved by overseas users. Agriculture products are affected by factors such as environment, temperature, air quality, etc., which will damage almond products. However, the products on the Bossgoomall website are screened by the website, and the quality of the products is highly controlled. The products on the current website are all acceptable. Choose with confidence.