How to graft bitter melon seedlings and precautions

Grafted seedlings of bitter gourd can effectively prevent blight of bitter gourd, soil-borne diseases and obstacles caused by continuous cropping, and can increase the yield of bitter gourd. Therefore, the operation method and precautions of bitter gourd grafted seedlings are sorted by seed net, which are listed in detail below. For netizens to refer to.

How to graft bitter melon seedlings, what should you pay attention to?

First, the bitter melon grafting seedlings operation steps:

Step 1. The grafted seedlings of bitter gourd are seeded with nutrient seedlings, and the scion is cleaned with pure soil to prevent soil-borne diseases. Bitter gourd seeds were soaked in 75% methyl thiophanate 800 times for 12 hours, then rinsed with water for 16 hours, dried, immersed in sand for 2 days; sterilized with nutrient soil with pentachloronitrobenzene, every 1000 kg of nutrition Add 1 kg of 40% pentachloronitrobenzene and mix well. Spread the nutrient soil on the seedbed. After wetting it with water, spread the bitter melon seeds that are germinated in the nutrient soil and cover the soil.

How to graft bitter melon seedlings, what should you pay attention to?

Step 2, the grafting time is generally 17 to 20 days after the rootstock is sown, the cotyledons are 5 to 6 cm from the ground, and the diameter is 2.0 to 2.5 mm.

How to graft bitter melon seedlings, what should you pay attention to?

Step 3: The grafting method of bitter gourd generally adopts the mitering method and the splicing method. For example, the miter joint is first cut into 2/3 and 0.3-0.4 cm deep at 0.5 to 0.6 cm below the vertical surface of the cotyledon of the rootstock. The strong scion is cut into the upper side of the cotyledon at a distance of 1 cm and cut into 2/3, deep. 0.3 to 0.4 cm. The two slits are aligned and fixed by a grafting clip.

How to graft bitter melon seedlings, what should you pay attention to?

Step 4: After the grafting of bitter gourd, it is generally 9 to 10 days after grafting, which is the wound healing period. 1 Temperature: Controlled at 25 ° C ~ 30 ° C during the day and 20 ° C at night. 2 Humidity: Keep it above 95%. The nutrient meal is discharged into the greenhouse and poured once with water. The small arch shed, plastic film and sunshade net are used to seal the heat. No ventilation in the first 5 to 6 days, 7 days later, in the case of high temperature and humidity, morning or evening ventilation: 1 or 2 times a day, gradually uncover the plastic film, increase the ventilation and time, but still maintain a high The air humidity is sprayed with water 1 or 2 times every day at noon. 3 illumination: shading after grafting. Grafting for 3 to 4 days should be completely shaded, and then gradually cover the cover in the morning and evening, and gradually remove the cover as the wound heals.

How to graft bitter melon seedlings, what should you pay attention to?

Step 5: Strip the unlived grafted seedlings and fake them into live seedlings. It is difficult to distinguish them at a time. It can be placed in a better condition. After a period of time, the slow-growing seedlings will gradually catch up with the large seedlings and remove the false live seedlings.

How to graft bitter melon seedlings, what should you pay attention to?

Second, the planting method of bitter gourd grafted seedlings:

1. Apply enough base fertilizer per mus to apply 4000 kg of high-quality organic fertilizer, 80 kg of ternary compound fertilizer, and deepen the land.

2. After 8 days of selection of seedling grafted seedlings, it will take 12 days to survive. When planting, it should be selected as live seedlings. The planting specifications are plant spacing (110-120) (70-80) cm, 700-800 plants per mu. The interface of the grafted seedlings should be more than 3 cm from the ground to prevent the interface from regenerating new roots.

3, pay attention to the method of covering the insulation with plastic film.

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