Sycamore family
Latin scientific name: Sterculiaceae
English name: SterculiaFamily
Brief introduction:
Trees or shrubs, sparse herbs or vines; often covered with stellate hairs; stem bark rich in fiber, often mucilage. Leaves simple, palmately compound, alternate, sparsely opposite, stipules caducous. Inflorescences axillary, sparsely terminal, panicle, Cymes, racemes or corymbs, sparse flowers solitary; flowers unisexual, polygamous or bisexual; sepals 5 (3-4), slightly connate or separated, valvate; petals 5 or absent, separated or basally connate with androgynophore, rotating imbricate arrangement. Stamens 5 or many, filaments often connate into tubular, ligulate or striate staminodes 5 (10), opposite to sepals, or without staminodes, anthers 2-loculed, longitudinally lobed; ovary superior, 5 (2-12)-loculed, carpels connate or conjoined, 2 (1) or many anatropous ovules per locule. Capsule or pod, sparse for berries or drupes.
68 genera, about 1100 species, distributed in the tropics and subtropics, and some species can reach the temperate zone. There are 82 species belonging to 19 genera in China, which are mainly produced in South and Southwest China, among which 6 genera and 9 species are introduced. Mostly for timber and special economic tree species.
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Sycamore planthopper
The morphological adult is 5.6 to 6.9 mm long, yellowish green, transverse width of the head, deeply parted top, forehead exposed, compound eye hemispherical protruding, brown antennae yellow, wings colorless and transparent, wing veins yellow, claws black; yellowish belly back, brown ribbon in front of each node. Egg spindle-shaped, 0.5 to 0.8 mm long, slightly transparent, yellowish or yellowish brown at birth, reddish brown before hatching. When the nymphs are newly hatched, they are oblong, 3.0 to 5.0 mm long and dark in color, and the wing buds are obviously visible.
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Field cultivation and management techniques of sycamore
1. Choose sunny, warm and moist, well-drained, deep and fertile soil for land preparation. two。 Seed propagation, cuttage and root division are often used in propagation. After the seeds are ripe, they are harvested for autumn and spring sowing. Sowing as soon as it is picked, seeds can also be stored until spring sowing in the following year because of irregular seed germination rate. Soak seeds with wet sand stratification or warm water to accelerate germination before sowing. Make a seedbed before sowing, open a shallow trench according to the row spacing of 30cm, and then sow in the ditch or on demand, with a sowing rate of 75-120kg per hectare. Reply after broadcast
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