2. Seeding and seedling raising should be timely. Seeds can be directly sown on Miao Di (seeds are dressed with new high-fat film before sowing), and then the seeds are sown in the soil with a rake, and the surface is sprayed with 800 times of new high-fat film liquid to keep the temperature and moisture, so as to prevent the soil from hardening and improve the seed germination rate.
3, seedling management, seedbed should be watered frequently to keep the soil moist, so as to facilitate the emergence of seedlings. After the seedlings are full, the spacing between seedlings should be done in time to prevent the seedlings from being too dense. And timely spray 800 times of new high-fat film to protect seedlings, prevent bacterial infection, improve the ability to resist natural disasters, and protect seedlings from thriving.
4. Transplanting planting should choose plots with fertile topsoil and strong water retention for transplanting. Before planting, apply base fertilizer and water; Reasonable close planting, density of 20-26 cm square, root watering after planting, spraying 800 times of new high-fat film, isolating pests and diseases, shortening the slow seedling stage and making the seedlings grow healthily.
5. On-site management. After transplanting, topdressing, intertillage and weeding should be done in time to prevent and control pests and diseases. At the same time, applying quick-acting nitrogen fertilizer and trace potassium fertilizer at the heading stage and when the stem begins to swell, combined with spraying Zhuangganling, can make the lettuce stem strong, the plants flourish, the natural flavor is strong, and the disaster resistance is improved. Reduce the residual toxicity and realize the synergistic effect of medicine and fertilizer.