According to the current status and development trend of the melon market, the majority of melon growers must rely on science and technology, apply improved varieties, and adopt advanced technologies to achieve high-yield, high-quality, and high-efficiency production purposes. The melon grafting technology of melon can effectively control melon wilt disease, improve the plant's stress resistance, increase production significantly, and increase the yield by 20-30%. In addition, the morning market can be mentioned, which not only achieves the purpose of increasing production, but also effectively increases the income of farmers. The grafting method is now described as follows:
1. Selection of Rootstocks and Scions Rootstocks should have the ability to resist wilt disease, have a strong affinity with melon, and do not affect the quality of melon. Practice has proved that: St. anvil 1 (white seed pumpkin) for melon grafting. Scion should choose the best varieties suitable for cultivation in our province, such as Red City No. 5 or No. 7, really sweet, Yong Tian and so on.
2. Grafting method: The rootstock and scion were sown in nutrient bowls. The rootstocks were sown 5 days earlier than the scions. When the cotyledons of muskmelon were unfolded but no true leaves were found, the proper diameter of the first true leaf of the rootstock seedlings was 1.5-2 cm. When grafting, first use a small knife to cut off the growing point of the rootstock, then use a bamboo stick to cut the hole about 1cm deep in the rootstock incision. The angle between the bamboo stick and the stem is 45 to 60 degrees. Be careful not to insert into the pulp cavity. Remove the melon seedlings, cut a knife down 1 to 1.5 centimeters below the cotyledons, cut the slanted surface that grows to about 0.6 centimeters, and remove the bamboo sticks from the rootstocks. The direction of the cotyledons of the scion was perpendicular to the direction of the cotyledons of the rootstock and was in the shape of a "10";
Reliable method: It is required that the rootstock and the scion are similar in size, and the scion should be sowed earlier than the rootstock for 7 days. When the melon begins the first true leaf, the rootstock is fully expanded when the cotyledons are expanded. Seedlings from the seedbed, with a blade at 0.5 to 1 cm below the cotyledons of the rootstock, cut obliquely at a 30 degree angle to shoot a rough 1/2, about 0.8 centimeters long, and then rise 1 to 1.5 centimeters below the scion cotyledons. Oblique cut a knife, go 1/2 of the hypocotyl, about 0.8 cm long, the two incisions embedded in each other, so that the cotyledon scion on the rootstock cotyledons, with grafting clips fixed, and then transplanted into the same nutritional seedlings as normal.
3. Management after grafting usually takes about 10 days from grafting to survival. During this period, attention should be paid to insulation, moisturizing, shading, ventilation, and removal of anvil buds.
Temperature management: 1 to 3 days after grafting, kept at 25 to 28°C during the day and 18 to 20°C at night. As the ventilation increases, the temperature gradually decreases. The temperature is 22 to 25°C during the day, 15 to 18°C ​​during the night, and the soil temperature is 22 to 22°C. 24°C, dropped to 15-18°C one week before planting.
Humidity and light management: 1 to 3 days after grafting, the humidity should reach 90% or more. You can spread a layer of newspaper or a layer of horse dung on the bottom of the seedbed, then place the grafted seedlings, fully irrigated the water, and support a small amount in the seedbed. Arch shed, surrounded by soil tightly sealed. The first 2 to 3 days need not be ventilated and shading during the day; from the 3rd to the 4th day, the cover can be removed in the morning and evening to receive scattered light; after 5 to 6 days, the small arch can be opened and ventilated and lighted except at noon; 7 to 10 days should gradually increase the amount of ventilation and light, normal management after 10 days.
In addition to anvil buds: Adventitious buds germinating on the rootstock of the rootstock were promptly removed to promote normal growth of the scion.
Broken roots: The melon seedlings grafted by grafting method were used to remove the roots of the scions immediately after grafting for 10 days.
4. The standard root system of robust grafted seedlings is well-developed, with a white color, a seedling height of 13 to 16 cm, short internodes, and a thick stem of 0.3 to 0.4 cm. Healing tissue is well developed. The rootstock interface has a diameter of 0.5 cm, 4 true leaves, and leaf hypertrophy. Dark green, cotyledon does not fall off, seedling age 35 to 40 days.
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