How is eggplant grafted?

Eggplant is often attacked by Fusarium wilt in the southern greenhouse, resulting in a large number of plant death. Using Fusarium wilt-resistant eggplant varieties as rootstocks, grafting can effectively prevent the occurrence of Fusarium wilt. On the other hand, eggplant needs higher temperature for growth, and as a heat-tolerant vegetable, eggplant will affect root growth and early maturity because of low ground temperature in early-maturing cultivation. Tomato of the same family as eggplant has strong cold tolerance, especially the suitable temperature for root growth of wild tomato is much lower than that of eggplant. Using this wild tomato as rootstock and eggplant as scion for grafting can improve the cold tolerance of eggplant and provide convenience for the early maturity of eggplant. Eggplant is often grafted by split grafting. The main results are as follows: 1. the rootstock variety wild eggplant is selected with high resistance to Verticillium wilt, which requires plant growth potential, developed root system and deep distribution. The suitable varieties of tomato are middle and late maturing varieties such as Maofen 802, Zhongshu 4 and Zhongshu 5. Tomato is resistant to Verticillium wilt and the seedling raising technique is easy to master. Second, the most commonly used scion varieties are black eggplant and clover eggplant. Third, rootstock and scion are suitable for sowing wild eggplant as rootstock, and the sowing time is 15-20 days earlier than eggplant. Using tomatoes as rootstocks, eggplant should be sown 7-10 days in advance, and then sow tomatoes when eggplant cotyledons top soil. Fourth, the seed consumption of wild eggplant per mu for seed treatment is 15-20 grams. Soak the seeds for 6-8 hours, soak the seeds with 0.1% carbendazim solution for 1 hour, remove and wash them, then soak them with (1-2) × 10-4 gibberellin at 20-30 ℃ for 24 hours and rinse clean. Blanch the seeds with 55 ℃ hot water for 30 minutes, soak the seeds with 30 ℃ hot water for 8 hours, wash the mucus on the seed coat, wrap it with clean gauze, control 16-18 hours every day for 25-30 ℃, accelerate germination for 6-8 hours under 16-20 ℃ control, rinse once with warm water in the morning and evening, and sow the seeds after 10-15 days of exposure. The seed treatment of tomato and eggplant is the same as that of common cultivation. 5. the grafted rootstock and scion seedlings were pseudo-planted when 1-2 pieces were grafted, the rootstock seedlings were planted in a nutrition cup of 9 × 9 or 10 × 10, the scion was planted in the seedling bed, and the seedling distance was 6 cm square. In the 5-6 leaf stage of the rootstock, the stem diameter is about 3 mm, the scion 4-5 stage, and the stem diameter 2 mm is the suitable period for grafting. Sixth, the grafting method adopts the split grafting method. Cut the eggplant flat from 2-3 cm below the cotyledons, cut it into a wedge with a blade, and the slope is about 1 cm long; leave cotyledons and 1 or 2 true leaves of the rootstock, head horizontally from the upper, then cut a mouth about 1 cm in depth from the middle of the stem, insert the eggplant wedge (at least one side of the phloem between the rootstock and the scion), then clip the clip along the cutting direction and put it into the grafting bed in time.