How to make annona squamosa seedlings in Zhang Lin?
Annona in Zhang Lin is generally planted with seedlings. Select mature fruits of excellent mother plants with regular fruit shape, soft branches and strong fruiting ability, and collect seeds to propagate seedlings. In order to adapt to the growth and development of seedlings, annona nursery should choose sandy loam or fertile loam with higher terrain, mixed with river sand. Before sowing, apply proper amount of peanut bran, calcium superphosphate and lime powder. After fully mixing, the border surface should be leveled, and the border ditch should be deepened and repaired to avoid water accumulation in rainy days affecting the growth of seedlings. Sowing can be done in spring and autumn. Autumn sowing refers to sowing directly after harvesting seeds in autumn, and covering with plastic film or straw for heat preservation in winter. Seedlings sown in autumn can be transplanted into separate seedbeds in the warm spring of the following year. Seedlings transplanted in separate beds have no main roots, many fibrous roots, thick trunks, early growth, rapid field development and the best quality. Spring sowing is generally planted around Tomb-Sweeping Day. Before sowing, dry the seeds for 2 ~ 3 hours, then put them on the cool and humid ground, and then soak them the next day. When soaking seeds for the first time, appropriate amount of thiophanate methyl wettable powder can be added for sterilization and disinfection, and appropriate amount of gibberellin can be added at the same time, which is helpful to break the dormancy of seeds and promote the orderly germination of seeds; Soak the seeds for 10 ~ 12 hours, pick up the seeds, let them stand for 10 hours, and then soak them in clear water for 8 ~ 12 hours; The soaking time should be no less than 20 hours, but continuous soaking is not allowed. Seeds can be sown after fully absorbing water, and the sowing method can be direct seeding or drilling; After sowing, cover the river sand until you can't see the seeds, water them, and then cover them with a sunshade net or straw to keep them moist. Before emergence, depending on the wet and dry conditions of the soil, it is usually watered once every 3 to 5 days. When the seeds are unearthed, the sunshade net should be removed to avoid affecting the growth of seedlings. Seedlings with normal growth can be sown in the following spring.