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1.选用良种选用耐寒性强的尖叶早熟品 种,如合肥尖叶鸭蛋莴苣、北京鲫鱼莴苣等。 2.培育壮苗1月中下旬在温室里播种育 苗。播前先用20℃的清水浸种3-4小时,搓洗 后捞出控干水,装入纱布袋,置于20℃的温度 条件下催芽。每天用清水淘洗1遍。控干水后 继续催芽,2-3天可齐芽播种。苗床要选肥沃 的沙壤土,每平方米苗床施磷酸二铵0.1公斤,
1. Selection of elite varieties of cold-resistant selection of sharp-leafed early maturing, such as Hefei tip leaf lettuce, Beijing carp lettuce and so on. 2. Nurturing strong seedlings in late January sowing nursery in the greenhouse. Before sowing with 20 ℃ soaking in water for 3-4 hours, after scrubbing remove dry water control, into the gauze bag, placed in the temperature of 20 ℃ under the conditions of germination. Wash with water 1 times a day. Control of dry water after germination, 2-3 days can be bud planting. Seedbed to choose fertile sandy loam, per square meter of rice seedbed 0.1 kg diammonium phosphate,