The tree (scientific name: torreya grandis), alias fragrant tree, wild tree, croissant, and beech, is a species of evergreen conifer tree in the genus Eucalyptus in the yew family. Up to 25m, chest diameter 2m. The trunk is straight, the branches are spread out, and the canopy is broadly ovate. The bark is greyish brown, shallow longitudinal lobes, hermaphroditic, rarely identical, flowering in April, the seeds are oval or oblong, the outer surface is yellow-brown to dark brown, slightly longitudinal, blunt at one end, with an oval umbilicus, slightly paler, smoother, and slightly pointed at the other end. The seed coat is firm and brittle, and 1 seed kernel can be seen after breaking, ovoid, endosperm membranous, gray-brown, extremely shrunken, endosperm hypertrophy, yellowish white, solid, oily. Slightly gaseous, slightly sweet and astringent taste. It has an aromatic after frying.
Sow in autumn or in early February and early March in spring. Strip sowing, ditch width 10 cm, depth 10 cm, cover thickness of 2 times the diameter of the seed, stamped after sowing, sown up to 1500 kg per 1 hm. After the seedlings are unearthed, the grass is removed and the shade is set up. In the spring of the second year, transplant according to the row spacing of 35 cm and the plant spacing of 15 cm. Water for a few days after transplantation to keep alive.
Beech tree
Cut the hard branches, ditch every 25 cm on the furrow, arrange the cuttings on the side of the ditch, cover the soil compaction, expose 1/3 of the ground, and settle in the early spring of the following year.
Every year, weeding should be carried out in medium cultivation, soil topdressing, and grafting, whole branches and pruning should be carried out after 5 years of colonization.
There are mainly tianniu as a pest.
(1) Artificial control: Using the suspended death of adult Tianniu, the branches can be shaken in the morning or after rain, and the adults can be killed on the ground, or the eggs in the incubation tank can be killed with a small sharp knife during the spawning period of the adults. In the larval stage, the branches are often checked, and when insects are found, the larvae are killed by digging up the cortex with a knife, and the dead shoots are found to be cut off in time and treated centrally.
(2) Pharmaceutical control: put in the new fecal hole with 30 to 50 times 50% of the dichlorvos emulsion oil or 40% oxidized Lego emulsion cotton balls, or put in 1/4 piece of aluminum phosphide, and then seal the insect mouth with mud for medicinal killing.
(3) Trunk whitening: Xingtian cattle lay eggs in the lower part of the trunk, and can be applied white on the trunk (1 part of quicklime: 1 part of sulfur powder: 40 parts of water), which has a taboo effect on adult insects.
This article is edited by toutiao wikipedia user 1751396847430, Mr. A's diary.