How does balsam pear seedling graft, what should notice?

How to graft balsam pear seedlings and what should be paid attention to? Netizens who have experience in balsam pear grafting are also invited to introduce that balsam pear grafted seedlings can effectively prevent balsam pear from Fusarium wilt, soil-borne diseases and obstacles caused by continuous cropping, and can increase the yield of balsam pear. Therefore, the planting network sorted out the operation methods and matters needing attention of balsam pear grafted seedlings, which are listed in detail for netizens' reference. 1. Operation steps of balsam pear grafted seedlings: step 1. Balsam pear grafted rootstocks are raised in a nutrition bowl and scions are raised in pure soil to strictly prevent the infection of soil-borne diseases. Momordica charantia seeds are soaked in 1000 methyl topiramate 800x solution for 12 hours, then soaked in clean water for 16 hours to dry, buried in sand to keep warm and promote germination for 2 days; disinfect nutritious soil with pentachloronitrobenzene, mix well with 40% pentachloronitrobenzene for every 1000 kg nutritious soil, spread nutritious soil flat on the seedbed, wet with clean water, and then sow the budding balsam pear seeds in nutritious soil and cover the soil. Step 2. The grafting time is generally 17-20 days after the rootstock is sown, when the cotyledons are 5-6 cm from the ground and 2.0-2.5 mm in diameter. Step 3. The grafting method of balsam pear can be either miter grafting method or split grafting method. Taking miter grafting as an example, the rootstock cotyledon was cut 30 °below the vertical plane 0.5 cm 0.6 cm, 0.3 cm 0.4 cm deep, and the robust scion was cut 30 °upward 30 °1 cm below the cotyledon, 0.3 cm 0.4 cm deep. The two incisions are aligned and fixed with a grafting clip. Step 4, balsam pear grafting is generally 9-10 days after grafting, which is the wound healing period. ① temperature: 25 ℃ ~ 30 ℃ in daytime and 20 ℃ at night. ② humidity: keep it above 95%. The nutrition bowl was closely discharged in the greenhouse and watered once, and the small arch shed, plastic film and sunshade net were used to insulate and shade. There is no ventilation in the first 5-6 days, and after 7 days, under the condition of high temperature and humidity, ventilation in the morning or evening: 1: 2 times a day, and then gradually uncover the plastic film to increase ventilation volume and time, but still maintain a high air humidity. Spray clean water once or twice at noon every day. ③ light: shading is needed after grafting. The grafting should be completely shaded for 3 to 4 days, and then gradually uncover the cover in the morning and evening, and gradually remove the cover as the wound heals. Step 5, peel off the grafted seedlings that did not survive, false survival seedlings, it is not easy to distinguish, can be placed in a better position, after a period of time, the slow-growing seedlings will gradually catch up with the big seedlings and eliminate the fake live seedlings. Second, the planting methods of grafted seedlings of balsam pear: 1, apply sufficient basic fertilizer, apply 4000 kg of high-quality organic fertilizer per mu, 80 kg of ternary compound fertilizer, and deep soil preparation. 2. The grafted seedlings survived after 8 days, and the complete survival took 12 days. When planting, live seedlings should be selected, and the planting specifications should be (110-120) × (70-80) cm, with 800 plants per mu. The interface of the grafted seedling should be more than 3 cm above the ground to prevent the interface from regenerating new roots. 3. Pay attention to the method of plastic film mulching for thermal insulation. The benefits of the method of accelerating germination of balsam pear seeds to lift vines