Suyan 605
Cultivation points 1. It is appropriate to sow the mid-lower reaches of the Yangtze River and the Huang-Huai-Hai area for planting. Use about 50 grams per acre. Seed drying before sowing 1 to 2 days, soaking in warm water at 55°C for 30 minutes, then soaking for 30 minutes with 0.1% potassium permanganate solution or 10% trisodium phosphate solution, washing with water, and draining for sowing. Live seedlings can be used for sub-seedlings, and direct seeding can also be done with nutrient sources. Keep temperature 25~30°C and night temperature 18~22°C. Seed sowing 5 to 6 days, when 60% of the seedlings top soil peeled off the film. Generally after 8 to 10 days seeding Qimiao. Pull out weak seedlings, diseased seedlings, and hybrid seedlings, and pay attention to the management of humidity. Strong seedling standards: balanced development of plants, no pests and diseases. Leaf hypertrophy, dark green leaves. The stalks are stout, the internodes are short, the cotyledons are intact, 7 to 9 true leaves are present, the first inflorescence buds, the roots are well developed, and the lateral roots are numerous and white. 2. Timely colonization of the middle and lower reaches of the Yangtze River and the Huang-Huai-Hai region generally select the cold-cold-tail warmer for planting in mid-February. One day before planting, seedlings were soaked with water, and the rooting water was soaked in time. Planting distance from 30 to 33 centimeters, spacing 45 centimeters, colonization of about 4,200 per mu of greenhouse. After the planting, a small arch shed was built in time to cover materials such as grasshoppers and heat and moisture. Within 5 to 7 days after colonization, the greenhouse was sealed. During the day, the coverings were opened and the ground temperature was raised. The temperature in the greenhouse was maintained at about 30° C., and multi-layered insulation and antifreeze was used at night to promote the early emergence of new roots and early-lived trees.
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