Autumn lettuce is sown in summer and early autumn. The temperature is high and the seed germination is difficult. Special management should be carried out. Since the best temperature for lettuce seed germination is 15-18°C, the high limit is 28°C, and it needs to see light. Therefore, the seeds need to be germinated at low temperature before sowing in the hot season. The specific method is as follows: Hanging method seeds are soaked in well water (about 15°C) or cold water proposed from the well for 5-6 hours. Wash with both hands, remove mucus impurities, rinse 2-3 times, remove and dry, and put in wet. The bag is hung in the well (the bag is 10-30 cm away from the water surface and cannot be soaked in water). The temperature is kept at about 15°C. Every day, it is taken out with the well water for 1-2 times and budding for 3-4 days. 2. Frozen soak the seeds for 24 hours. Scrub clean, wrapped in gauze, in the refrigerator or freezer, frozen at -3 °C -5 °C temperature for 24 hours, after the formation of ice, placed in a cool ventilated place, the ice slowly melt. Seed germination also progresses slowly. When the young shoots are white, spread out in a cool, airy place with scattered light, and pay attention to spray, moisturize, and prevent dryness. After 2-3 days, when the germ appears pale green, it can be sown. After germination, after germination, it emerges neat and tidy. Strong resistance. 3. Mix the sand and soak the seed for 1-2 hours and then mix it with wet sand. Place it on the air-raid shelter or water tank, keep it cool and moist, and germinate 3-4 days. 4. After the irrigated rice seedling bed has been roasted and dried, it is flattened and finely ground. The dried seeds are sown and covered with a thick layer of straw. Then, straw or bricks are used to hold down the straw. The seedbeds are soaked in water every evening and the seeds germinate gradually in 2-3 days. 5. The growth regulator germination method can also be soaked with 5 mg/well gibberellin ("9-2000") and 5 mg/l 6-benzylaminopurine at a high temperature of 30-40°C for about 8 hours, and then rinsed with tap water. Clean, you can sow, the germination rate can be increased to about 80%. If 6-benzylaminopurine is mixed with gibberellin at 5 mg/l each, the effect is better. When using 6-benzyl amidine and gibberellin, the concentration should not be higher than 7.5 mg/L, otherwise it will reduce the germination rate and cause phytotoxicity. Put a shade shed (cloudy sky) or use a shade net after sowing. It can also be planted under melons, or mixed with the unearthed cabbage.
Fresh Ginger,Fresh Garlic,Fresh Vegetables
Elites-United Foodstuff Co., Ltd. , http://www.qdiqfvegetables.com