Invasion of seeds with warm water to accelerate germination. Four to five days before sowing, the seeds were soaked with warm water with an initial temperature of 45 ℃~ 60℃, and the volume ratio of seeds to water was about 65,438+0. Stir constantly when soaking seeds, so that the seeds are heated evenly. After natural cooling, 24 seeds were soaked in water to swell, then taken out and placed at 20℃ ~ 25℃ to accelerate germination. Apply white latex to large wounds to prevent the loss of tree juice.

Step 2 manage

Generally, water is not watered after sowing, and hoe can be used to reduce water evaporation. Seeds emerge 7- 10 days after germination, and attention should be paid to prevent bird damage after germination and before seed shell falls off. The seedlings of Pinus thunbergii are prone to collapse in May-June. After the seedlings come out together, spray Bordeaux mixture 1 time every 15-20 days for 3-4 times. If the seedlings are sick, the diseased plants should be removed and burned in time, and the roots should be irrigated with 1% ferrous sulfate solution every 7- 10 days for two consecutive times.