Species and names of weeds (common weeds in the field)

The main weeds in the field are: wild oats, descurainia sophia, shepherd's purse, Chenopodium album, plantain, erigeron breviscapus, erigeron erigeron, dandelion, water spinach, cauliflower, garlic with small roots, wild watermelon seedlings, lettuce, Solanum nigrum, small fruit flax shepherd's purse, brome, ion grass and salsola. Kochia scoparia, Paris polyphylla, mallow, epimedium, malt, motherwort, Artemisia annua, erigeron breviscapus, Eupatorium adenophorum, Sophora alopecuroides, sheep's hoof, Potentilla, Vicia faba, Datura stramonium, madder, Xanthium sibiricum and kelp. Wild hemp, raspberry, pig gizzard, celery, equisetum arvense, amaranth, barnyard grass, wild carrot, Chenopodium album, chicory, cornflower, feilian, wild chrysanthemum, sweet potato, chickweed and large fruit flax. The following common weeds are attached with attached drawings.

Exprantl of Descurainia sophia is panicum miliaceum, with a height of 20-80 cm, hairy or hairless, with furcation, and more cauline leaves in the lower part, but less upward. The stem is erect, with many branches, and the lower part is often lavender. Leaves 3-pinnate, 2- 12(- 15) cm long, terminal lobes strip or rectangle, lobes (2-)3-5(- 10) mm long and 0.8- 1.5(-2)

Saxifraga (Portulaca oleracea)

Shepherd's purse (chopped vegetables)

Jiejiemai

Solanum fruits: millet, the height of the whole grass is 30-120 cm; Stems erect and multi-branched; Oval or heart-shaped leaves alternate, nearly entire; Small white flowers in summer, cymes 4- 10 flowers; Spherical berries, deep purple when ripe. Berries and leaves are edible, but leaves contain a lot of alkaloids and must be cooked before detoxification.

Matang (scientific name: Matang. ) is a family of Gramineae, belonging to the genus Panicum. Its height can reach 80 cm, the leaf sheath is shorter than the internodes, the leaves are linear-lanceolate, the base is round, the edge is thick and slightly rough, the stems are erect or oblique, and the lower nodes take root on the ground and spread into pieces, which is not easy to pull out. Leaves are hairy. Racemes; Spikelets elliptic-lanceolate, short triangular, veinless; The anther is about 65438 0 mm long. June-September flower and fruit period.

Echinochloacrusgalli(L.)Beauv. is a kind of millet. Barnyard grass and rice are very similar in appearance. Barnyardgrass grows in paddy fields, swamps, ditches and low-lying wasteland. It looks like rice, but its leaves are rough and light in color.

Barnyard grass and rice * * * absorb nutrients in rice fields, so barnyard grass is a malignant weed in rice fields, and the "black sheep" among the black sheep is the evolution of barnyard grass. But it is also a good feeding material for horses, cattle and sheep, with high nutritional value. Roots and seedlings can be used medicinally to stop bleeding and treat traumatic bleeding.

Amaranthus retroflexus, alias: Xifeng Valley, Latin scientific name: Amaranthus retroflexus. Amaranthaceae, Amaranthus panicum miliaceum, 20-80 cm high, sometimes up to1m; The flowering period is July-August and the fruiting period is August-September.

Scutellaria baicalensis Georgi is a labiatae plant of Rubiaceae. Multi-branched, creeping or climbing herbs, born on slopes, wilderness, ditches, beaches, fields, forest margins and grasslands at an altitude of 20-4600 meters. There are about 300 species distributed in wet woodlands, swamps, river banks and coasts all over the world. It is a malignant weed in summer-ripe dry land, and also a Chinese herbal medicine with antihypertensive and anticancer effects.

Cyperus heterophylla: The plant name (Cyperus heterophylla) belongs to Cyperaceae. Panicum miliaceum. Seeds are propagated in summer and autumn during the flower and fruit period, and there are many seeds, which fall off after maturity and emerge in spring. It is a malignant weed in low-lying and humid dry land. Born in paddy fields or wet places near the water. It is distributed in most areas of China.

Stellaria is the tender stem and leaf of Stellaria. Alias: goose intestines, goose intestines.

Cyperus, also known as Leigong grass, Cyperus, Haloxylon ammodendron, bearded grass, fragrant beard, fenugreek, wild leek and so on. , a perennial sedge weed, ranks first among the top ten malignant weeds in the world. Originated in India and widely distributed in tropical and subtropical regions, 52 crops have been reported as harmful and distributed in 92 countries. However, its natural enemies have not been introduced at the same time and are suitable for the local climate and environment, and now it has become one of the top ten harmful weeds in the world. Widely distributed in temperate and tropical regions south of 45 north latitude, it occurs in most parts of China.

Wild arrowhead: (scientific name: arrowhead arrowhead. ) alias donkey ear vegetables, big donkey, donkey ear, flying grass, triangle grass, kidney bean of old sow, sweet bean, spear thorn, duck bill, dress collar, kite and swallow. Perennial aquatic or swamp herb, a variety of arrowhead, has shorter plants and smaller and thinner leaves than arrowhead. It is distributed all over China.

Alisma orientalis (scientific name: Alisma orientalis. ), alias water spinach and water spinach, are perennial aquatic or swamp herbs.

Yu Jiuhua: (Scientific name: monochoria Korsakowiiregel &；; Maack) alias: Hedyotis diffusa, orchid, hawthorn, erect aquatic herbs; Rhizomes are stout and have soft fibrous roots.

Humulus scandens is also called onion. It is a perennial herb weed of Cyperaceae, living in paddy fields, ponds or shallow waters.

Rice barnyard grass: (ScirpusjuncoidesRoxb) is a perennial herb weed of Cyperaceae, which grows in paddy fields, ponds or shallow waters.

Pennisetum: (scientific name: Bidens bipinnata. ) Also known as: ghost fork, ghost needle, ghost thorn, etc. It's panicum miliaceum of Compositae. Stems erect, 30 ~ 80 cm high, sometimes up to 90 cm; Branched from base, glabrous.

Japanese grass, flatstem grass and water sedge, commonly known as fenugreek, are perennial herbs that propagate with seeds and tubers and are malignant weeds in rice fields. It often grows in wetlands, river banks, swamps and other places. The culm is simple, oblate, and the bracts are leaflike and longer than the inflorescence. Distributed in most parts of the country.

Cow felt: Vaccaria, a monocotyledonous plant, is quite an aquatic weed. As thin as a cow's hair. It is one of the important weeds in rice fields. Born in paddy fields, ponds and wet clay.

POTAMOGETON POTAMOGETON: A perennial aquatic herb that floats on the water and lives in a still pond. It is a common paddy weed, sometimes a malignant weed, and also a traditional Chinese medicine. It is distributed all over China.

Stolon glume cutting: creeping weeds, crowfoot grass, (scientific name: AgrostisstoloniferaLinn. ) perennial herbs. With long stolons and nodes, nodes take root on the ground. Leaf sheaths are hairless, purplish, flat, sharp and prickly. Summer is the yellowing period of this plant. Panicle oval rectangle, green and purple.

Origin: Eurasia, North America, Northeast China, North China, Northwest China, Jiangxi and Zhejiang. There are many varieties, which can be roughly divided into height, disease resistance and color (dark green, medium green and dark green).

Eriocaine: Eriocaine, a panicum miliaceum, has soft and dense fibrous roots, basal leaves and needle-like strips. The head is hemispherical, the bracts at the bottom are closely arranged, the bracts are light yellow and green, the upper edge has short white hairs, and the top of the inflorescence is gray. The flower stems are slender, different in length, yellow-green, shiny, slightly twisted and have several ridges. Capsule 3-lobed. Location: Suzhou, Yixing and Liyang in China, Xing Wu, Huzhou and Xiangxiang in Zhejiang, Huanggang, Xianning and Xiaogan in Hubei.

Spirogyra: Moss and toad can be used as bait for some fish, which are widely distributed in ponds, ditches, rivers and other places. Spirogyra can also be used as medicine, which has the effect of clearing away heat and toxic materials; However, the occurrence of spirogyra in a large area is prone to many problems.

Sargassum: Zhasai, (scientific name: NajasminorAll. ) Sargassum, an annual submerged plant of Sargassum. The stem is cylindrical, smooth and toothless, with many branches and a binary shape; The leaves are linear, the upper part of the leaf sheath is heart-shaped, the flowers are small, unisexual, the axils are solitary, and the pollen grains are oval; Female flowers have no spathe and perianth, achene is yellowish brown, long and narrow oval, and the seed coat is hard and fragile; The flowering and fruiting period is June -65438+ 10. Small and clustered in ponds, lakes, ditches and rice fields.

Barnyard grass: barnyard grass with red roots, (EchinochloacaudataRoshev. ), panicum miliaceum. The growth period is from May to 10, and the flowering and fruiting period is from July to 10.

Xanthium sibiricum is the dried and mature fruit of Xanthium sibiricum in Compositae. Annual herb, up to 1 m. All the grass has its toxicity (kaurene glycoside), especially the fruits, especially the seeds. Native to America and East Asia, widely distributed in most parts of Europe and parts of North America; In the wild on hillsides, grasslands, roadsides, etc. , distributed all over China.