(l) Selection of grafting rootstock: At present, the high-quality rootstock used in production is Tolubam, a rootstock variety of "Four Resistance", with 1000-grain weight1g. Seeds are generally difficult to germinate, and the following methods are often used to accelerate germination: first, the seeds are heated to accelerate germination, soaked in warm water for 5-6 hours, and then taken out and put into a cloth bag at 30-30℃. 2. Soak the seeds in gibberellin solution to accelerate germination, that is, soak the seeds in gibberellin with the concentration of 100 mg/kg for 24 hours, dry them in the air, then soak them in clear water for 24 hours, and put them into a small cloth bag to accelerate germination.

(2) Selection of scion: rootstocks have low requirements for scion selection, as long as solanaceae plants are generally compatible. The wound can heal 7- 10 days after transplantation. Rootstock seeds are sown about 15 earlier than scion seeds.

(3) Grafting method: generally, split grafting or oblique grafting are adopted. When grafting, the operating table should be clean to prevent soil.

(4) Technical requirements for rootstock and scion seedling: Before rootstock and scion seedling, the soil must be fully watered with peracetic acid (500-800 times solution), and the covered soil should be sprayed with 50% carbendazim 500 times solution.

(5) Arrangement of eggplant grafting seedling time in different seasons: eggplant grafting seedling is carried out in the open field and in the arch shed. Northern 65438+ 10 began to cultivate rootstock seedlings in mid-October, grafted in late March and sowed in late April. Grafting seedling of autumn eggplant. Generally, rootstock seedlings are cultivated in June, grafted in early August and sowed in mid-September. Grafting seedling of eggplant in winter and spring. Rootstock seedlings were sown in mid-August, grafted at the end of June at 5438+ 10, and planted in mid-February at 65438+February.

(6) pest control. For disease prevention, 1: 1: 20o times Bordeaux solution or 80% zineb 500-800 times solution can be sprayed for 3-4 times. Bury 1.5 kg of 50% carbendazim powder (plus 15 kg of fine soil) per mu during intertillage. Pest control can be carried out by spraying 40% dimethoate solution once at seedling stage, then using dichlorvos, and stopping taking medicine 4 days before harvesting.