Grafting and cultivation of gualai can improve the disease resistance of the vegetables, and the grafted seedlings can also be cultivated in a row. The low-temperature resistance is also enhanced, and the scion plants can also obtain a developed root system and enhance the absorption capacity of fertilizer and water. Save fertilizer. First, the selection of rootstock species should be selected for disease resistance, root system developed, strong absorption capacity, and scion affinity is good, no adverse effects on the scion of the varieties as rootstock. Cucumber can be used sunsquash pumpkin as rootstock; watermelon is mainly used as the rootstock gourd, can also be used pumpkin, East melon; melon can be used as pumpkin rootstock, greenhouses and melons of melons on the quality requirements of high quality, generally a variety of common anvil as well; eggplant available red eggplant ( Wild eggplant) as the rootstock, can also use tomatoes with strong low temperature resistance as the rootstock; tomato's rootstock is red eggplant and common anvil varieties; "early Qing Dynasty" zucchini to sunspot pumpkin as the rootstock. Second, the grafted technology Watermelon generally uses plug-in method. Rootstocks are sown 5 days to 7 days earlier than scions. Seedlings of rootstock seedlings emerged from the rootstock. Scioning seedlings were grafted from the shelling stage to the early stage of the cotyledon. When grafting, first use a sharp blade to cut the roots of the rootstock, and use a special bamboo skewer on the side of the rootstock near the cotyledon to diagonally cut the hole about 1cm deep at 30 degrees to 40 degrees; The section below is cut into wedges and inserted into the rootstock. Generally, 70 to 100 strains can be grafted per hour. 2. Cucumber can be plugged (with watermelon plug method), but also by the connection method. The scion was sown five days earlier than the rootstock, and the grafting was carried out about 10 days after the rootstock was sown. At this time, the cucumber seedlings and pumpkin seedlings were coarsely weighed, which was conducive to survival. When grafting, cut the growing point of the rootstock with a blade, cut it down to 300% of the stem diameter at 30 degrees to 40 degrees, and then cut the shoots with the same angle and depth. The incision and rootstock incisions are fit together, then clamped with graft clips and transplanted into the nutritional bowl. After living, the scion can be cut off under the grafting clip; the root cutting time should not be too late, otherwise it will cause leggy. Clips are removed after colonization and left for later use. Using grafting method can graft 70 strains per hour. 3. Tomatoes can be plugged. Rootstock with 4 leaf stage seedlings, leaving 2 true leaves cut off, with bamboo sticks will be the first true root base of the rootstock poke into a 45-degree angle hole, bamboo sticks should penetrate the rootstock; scion with 2-leaf seedlings Cut from the upper or lower part of the cotyledon at 30 degrees to 40 degrees and insert it into the small hole of the rootstock. Due to the large scion seedlings, clips are applied after grafting. Using the plug-in method, 80 to 100 strains can be grafted per hour. 4. The eggplant uses a splicing method. The rootstock was sown 5 days to 7 days after sowing. When the rootstock seedlings have 4 to 5 true leaves, cut the rootstock laterally, leaving 1 to 2 true leaves, cut from the middle of the stem. Two to three true leaves of the scion bands were cut, and wedges of 1.5 cm to 2 cm in length were cut on both sides and inserted into the rootstocks and fixed with clips. 5. Zucchini squash with "early Qing Dynasty" for scion, sunspot pumpkin for rootstock, using the method of connection. The best grafting stage was the basic flattening of the cotyledon of the pumpkin seedlings, the dew of the true leaves, and the first true leaf of the zucchini seedlings. When grafting, the bred seedlings should be lifted out with a spade shovel and the roots of the pumpkin seedlings should be as complete as possible. The top of the pumpkin seedlings was cut with a blade, and then cut obliquely at an angle of 45 degrees from the top to the bottom of the cotyledon from 1 cm to 1.5 cm. The length of the incision was about 2/3 of the diameter of the stem; the scion of the zucchini was 2 cm above the cotyledons. 2.5 cm from the bottom up oblique cut, cut the same as above. The incisions are docked and the graft clips are placed so that the incisions are tightly bound. About 10 days or so, the wound healed. Precautions: In order to increase the survival rate and reduce the spread of diseases (such as viral diseases) during the grafting process, the joints should be kept dry, and watering and water spray should be avoided within 1 day after grafting. Grafting tools such as blades, bamboo sticks, etc., should be replaced and disinfected frequently, and can be boiled in boiling water for 10 minutes to 15 minutes before use.
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