Method for grafting tomato--needle connection method
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Tomato grafting cultivation not only can effectively control the root diseases, but also has strong growth potential and high yield. There are many kinds of tomato grafting methods, and now introduce a new method that is both easy to save and easy to survive - needle connection method. For rootstocks, tomato varieties with well-developed root systems, high resistance to bacterial wilt, and root rot are the best choices. Scallions and rootstocks are sown at the same time. The rootstocks are best sown in the nutrient bowl. In the scions and rootstock leaves grow 2 to 2.5, the hypocotyl diameter of about 2mm for the grafting period. Grafting under the cotyledons of the rootstock is easy to operate and has a high survival rate. When grafting, the seedlings with the same thickness of rootstock and scion were selected, and the seedlings were cut obliquely at a distance of 1 to 1.5 cm below the cotyledons of the rootstock with a blade, and the tangential line and the axis line were at an angle of 45°, and the cut surface was required to be smooth. Then use a stylus pen (similar to a mechanical pencil, which can hold 50 to 100 sterilized pull needles, and use it to lightly press the stylus on the top to drop it out. The length is 1 of the total length of the needle. /2) Insert the pin along the oil line at the center of the cut surface of the rootstock by 1/2, and insert the remaining 1/2 into the scion. In the same way, the scions were cut obliquely at a 45-degree angle under the scion cotyledons, and then the scion was inserted on the rootstock. It is required that the sections of rootstock and scion are closely aligned to facilitate wound healing. During the grafting process, we must pay attention to the health of the cuts to prevent the infectious diseases from reducing the survival rate. The seedlings are placed in a plastic shed after being connected, and water is poured (note that the water should not be splashed on the wound). The temperature is controlled at 25 to 28°C. The light intensity should be shaded properly. After 5 to 6 days, the wounds are healed and then the seedlings are pressed. General management. The needle graft method has a high survival rate of grafting, and can effectively adjust the shooter seedlings, and can also save the trouble of removing anvil buds (because the grafting position is below the cotyledons). This method is also suitable for grafting of eggplant and cucumber.