Seedling tray seedling cultivation is a major technical innovation for vegetable seedlings, which overcomes the disadvantages of low seedling rate, difficulty in controlling seedling diseases, high cost, and large floor area of ​​traditional nutrition seedlings, and is well received by the majority of vegetable farmers. For the seedling substrate seedling cultivation, Song Chunming, Guanchenglu Village, Datian Township, Shouguang City, is rich in experience. Faced with the environmental conditions of high temperatures in summer, Song Chunming said: “To nurture uniform and strong seedlings, we must grasp the following five links.†One should choose suitable hole diameter for the plug tray and the matrix. The selection of plug trays depends on the type of vegetables used, the size of the seedlings, and other factors. For example, sweet peppers use 72 or 105 points, tomato uses 105 points, and grafted shoots use 50 points. Before sowing, the plug trays should be disinfected. The plug trays can be soaked with amylovir solution, and can also be disinfected with potassium permanganate solution. In particular, old plug trays must be disinfected. The choice of matrix is ​​an important link in the seedling matrix culture. Many nursery factories and vegetable farmers in the production are due to the improper choice of the matrix, which causes the slow growth of the seedlings and the yellow leaves. The choice of matrix should be based on the PH value, nutrient and other requirements of the seedling roots of the cultivated cucumbers. The appropriate matrix should be selected. For example, the import matrix can be used, and Lu Qing can also be used as a nursery substrate. And the matrix into the plug before disinfection, can be used carbendazim treatment, but also with the antibacterial 968 Miao Bao mixed by a certain percentage, the use of biological bacteria to protect the normal growth of seedlings antibacterial effect. Second, to make enough water to ensure that the whole seedlings broadcast. Before the sowing, the bottom water was sprayed at one time and the substrate was poured. When the bottom layer began to see water, the requirements for sowing germination and emergence could be satisfied, and the water sprayed medicine could be used according to the disease at the seedling stage. If the bottom water is too much, the bed temperature will be reduced. If the bottom water is insufficient, it will increase the difficulty of replenishing water to promote the whole seedlings. After sowing, according to the requirements of the cover depth of different crops, cover with the substrate, and then cover the surface of the film insulation and moisturizing, promote seedlings, seedlings, seedlings. Third, we must remove the film in time to prevent scald seedlings. When the plug seedling emergence rate reached more than 50% when the film must be removed in a timely manner to prevent emergence of high temperature water shortage burn seedlings, in order to help preserve the seedlings and promote strong seedlings. Fourth, we must strengthen management and improve the growth environment of the seedlings. Although it is simple and feasible, the use of “two-mesh and one-film†coverage for nursery is still the focus of management during the high temperature and rainy season in summer. Two networks, namely, shade nets and insect nets; a film, that is, a plastic film. The shading net can play the role of shading and cooling, the insect net can play a role in preventing the invasion of pests, and the membrane can play a role in preventing rain. What needs to be emphasized here is that the use of sunshade nets must be scientific and reasonable. Do not cover the seeds for a long time after emergence so as not to cause poor growth of the seedlings. Fifth, appropriate amount of water supplement fertilizer, to achieve foot age strong seedling transplanting. Plug seedlings should pay attention to timely replenishment, and when the surface of the substrate is whitish, it needs replenishment. At the same time, according to the nutrient content of the substrate and the growing condition of the seedlings, most of the methods adopted foliar spray fertilizer, combined with replenishment for proper nutritional supplementation. The control of pests and diseases is the same as normal seedlings. According to the seedling age and the transplanting period, the appropriate sowing date should be reasonably determined, and scientific regulation should be carried out according to the leaf age standard for transplanting so as to prevent the fertilizer from being used excessively and lead to leggy seedlings to ensure transplanting of seedlings of the right age. Orange Pvc Coated Gloves,Single Dipped Pvc Gloves,Freezing Weather Pvc Gloves,Industrial Orange Pvc Gloves JINAN SHANDE SECURITY TECHNOLOGY CO., LTD , https://www.sdsxlb.com