Seedling cultivation of Pinus elliottii, Rhododendron, etc.

Seedling cultivation of Pinus elliottii, Rhododendron, etc.

In autumn, the five-needle pine mixed the seeds with coarse sand at 1:5, buried them in flowerpots and buried them in a field with sunny drainage outside. Ching Ming Festival sowed seeds before and after. Sow on the seedbed, covered with sandy loam 1 cm, usually two months of seedlings can come out. If the number of seeds is very small, soak the seeds in warm water in spring, 2 after 3 days, carefully break the outer seed coat, pot sowing under the condition of 25 ℃, seedlings can emerge in about 10 days.

When breeding wild rhododendron or breeding new hybrid varieties, du Peng often uses sowing method to raise seedlings. Rhododendron seeds are small and potted in autumn or spring. Spread small pebbles 2 cm thick with the bottom of the shallow basin, mix the culture soil at 2:1 with peat soil and fine sand on the top, flatten the soil 2 cm below the edge of the basin, put the seeds on the paper, gently vibrate and sow on the surface, and cover the seeds with 2 mm thick fine soil. Soak the pot to moisturize, the flowerpot is in the greenhouse film cover, under the condition of 20Mel 25 ℃, the seedlings can emerge in one month. The height of the seedling is about 1 cm, and the buds are sparsely planted in the hotbed or flowerpot.

Haoba, also known as Youba, Simonderwood, native to the western United States, is a woody oil plant of the family Cymbiaceae. The seeds are brown and shaped like peanut kernels and weigh about 500 grams. Spring sowing under the condition of 25 ℃ 27 min, changing water every day to prevent the seed coat from getting moldy, sowing after cracking mouth, and emergence in about 10 days. The hotbed is sown and then sparsely planted, and the plant height can reach 30 cm in the same year.

Light bark tree, also known as dog bone wood, is a woody oil of Cornaceae, as well as lai wood, mahogany, cabinet wood and Cornus officinalis. The seed coat is thick and hard, and the oil outside the seed coat should be removed before sowing, and the seeds are generally mixed in coarse sand. 30 days before sowing, soak 2Mel in 50 ℃ lukewarm water 3 times a day, each time for 30 minutes, then put it on a wet cloth and destroy the sprout in the greenhouse. Half of the seeds can be sown when they are cracked, and the seedlings will emerge about 40 days after sowing. The height of the plant in that year can reach 30Mel 50cm.