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Essence
2. Seed treatment, sowing time and method
American red maple seeds are not dormant, and they can be performed both autumn broadcasts or spring broadcasts.The sowing time is suitable for mid -March to mid -April.Before broadcasting, mix the seeds and wet sand at a ratio of 1: 3, and put it for a month of low temperature sand hidden treatment at 3 ～ 5 ℃.During the streaming period, it is necessary to check and manage it on a regular basis, and the seeds with germination should be found in time.When sowing, first pour foot water in the pupa, wait for the water seepage and sow, and the amount of sowing per square meter is about 200 capsules.After sowing, it should be covered with a fine soil of 0.5 cm. In order to keep the ground temperature, the seeds are sprouted early and sprouts are neat. It can cover the ground membrane or small arched shed. Pay attention to ventilation in the arched shed.Generally, after 15 to 20 days after sowing, the seedlings are produced.
Third, seedling management and growth
After the seedlings are unearthed, they grow slowly in the early stages. The poor resistance should be sprayed frequently, keeping the soil humidity, and removing weeds in time. When weeding, we must travel as much soil as possible to prevent upside down.When the seedlings grow to 5 cm high, the seedlings are fixed. Generally, after the water is irrigated, the spacing of 10-15 cm plants is weak, sick and small seedlings, and the seedlings are strong and neat.EssenceIn early June, the amount of urea was combined with watering, 15kg per mu, and 10 to 15kg of urea per acre in mid -July.If pests such as thorn moths are found, 2.5%of the sedonal ester can be sprayed with 4000 times liquid for control.
