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New Methods for Grafting Vegetables - Needle Grafting
First, the tool needle grafting method uses a needle with a hexagonal section, a diameter of 0.5 mm, and a length of 1.5 cm to connect the scion and the rootstock. The grafting needle is made of ceramic and does not affect the growth of the plant in the plant. The working method of the grafting method also includes two blades and a needle inserter. Second, the method using the needle grafting method, the grafted seedlings of solanaceous vegetables should be slightly larger, usually about 2.5 slices of real scion scion, rootstock is 3-3.5 true leaves, the rootstock and scion in the cotyledons and first The slices are cut horizontally, the needle is inserted into the rootstock using a pincer, and the other half is inserted into the scion so that the two cuts fit together. Third, seed treatment and management methods Rootstock seeds soaked with 100 mg / kg gibberellin at room temperature (about 18 °C) soaked for 24 hours, directly broadcast seedling tray, scion seeds soaked in warm water at about 37 °C for 1 hour directly after sowing seedlings The temperature of the nursery room is 15°C-26°C. After about 50 days, the seedlings reach the grafted seedlings and can be grafted. After grafting, the grafted seedlings were placed in a small arch shed set up in the greenhouse, completely shaded and protected from light within 3 days, the temperature was 25°C-28°C, the humidity was 93%-95%, and the ventilation was small on the 4th day. The first 6 days increased. Large ventilation, until after survival out of the shed, the normal management, graft survival rate of 90.8%. Whether it is eggplant or cucumber, or tomatoes, the survival rate of needle grafting is slightly lower than that of abutment or splicing. It is not a bad method, but the temperature and humidity required by the needle connection method are rather strict. If the temperature and humidity can be strictly maintained, the survival rate of the needle grafting method is not much different from that of the splicing method and the docking method. IV. Advantages of needle grafting Seedling height, leaf area, ground fresh quality, underground fresh quality, dry matter quality and dry matter rate, maximum leaf length and leaf width, and chlorophyll ratio of seedlings by needle grafting method Seedlings were 3.89%, 1.08%, 18.07%, 11.03%, 27.50%, 69.50%, 34.06%, 6.12%, 5.70%, and 6.70%, and the rate of grafting was 1.6 times that of the access method. Fifth, the grafting of cucurbitaceous vegetables grafted at the cotyledon stage is appropriate, due to the middle of the rootstock stem is hollow, so when using this method, the scion will be cut horizontally below the cotyledon 5-8 mm, insert the needle, and then The rootstock growing point and one cotyledon are horizontally removed, and the other half needle on the scion seedling is inserted on the rootstock to complete needle grafting. 6. Precautions The needles and needles used in the needle-type grafting method must be strictly disinfected, and the blades must be very sharp. When cutting, they must be formed at one time. The faster the grafting speed, the better.