Walnut, commonly known as walnut. Trees, up to 20-25 meters; The trunk is shorter than other species and the crown is broad; Bark is grayish green when it is young. Odd pinnate compound leaves are 25-30 cm long, and petiole and leaf axis are covered with extremely short glandular hairs and glands when they are young; Leaflets elliptic-ovate to oblong. The male inflorescence droops.

Bracts, bracteoles and perianth segments of male flowers are glandular hairy; Stamens 6-30, anthers yellow, glabrous. The involucre of female flowers is very short glandular hairy, and the stigma is light green. The fruit sequence is short, and it is drooping; The fruit is nearly spherical and hairless; The stone is slightly wrinkled, with 2 longitudinal edges and a short tip; The diaphragm is thin and there is no gap inside; There are irregular gaps or no gaps in the endocarp wall but only wrinkles. Flowering in May and fruiting in 10.

Extended data:

1, planting time: autumn and spring are suitable. Autumn1late October to1/late October, spring early March to early April.

2. Planting density: The planting density depends on site conditions, cultivated varieties and management level. The row spacing of early fruiting varieties should be 3×5 meters or 4×5 meters, and 33-45 plants should be planted per mu; The row spacing of late-bearing varieties should be 5×6 m or 6×6 m, and planting per mu 19-22 plants.

3. Planting technology: When planting, after pruning the long and injured roots of seedlings, dip them with GGR6 green plant growth regulator 50- 100ppm and yellow mud. Put the treated seedlings into the hole, bury them with ripe soil, lift the seedlings and tread lightly, when the filled soil is level with the ground, tread firmly, then pour enough root water, and cover them with 80×80 cm or 100× 100 cm plastic film.

Baidu encyclopedia-walnut

Baidu encyclopedia-walnut