What is the latest wild oat plant?

Wild oat, also known as black wheat, bell wheat, oat grass, etc., is an annual plant of the genus Gramineae oats, usually harmful to wheat and other crops, mostly in barren fields or fields, widely distributed in the north and south provinces of our country, and also distributed in the temperate regions of Europe, Asia and Africa, and imported from North America, Indians use their seeds for food.

The annual fibrous root of wild oat is tough, the culm is erect, smooth and glabrous, 60-120 cm high, with 2-4 nodes. Leaf sheaths loose, smooth or basal ones puberulent. Ligule hyaline membranous, 1-5 mm long. Leaf blade flattened, 10-30 cm long, 4-12 mm wide, scabrid, or upper and margin sparsely pilose.

Panicles of wild oats spreading, pyramidal, 10-25 cm long, branches angular, scabrous. The spikelet is 18-25 mm long and contains 2-3 florets with a pendulous stalk and a swollen tip. Rachilla densely light brown or white hirsute, its nodes brittle and hard and easy to break, the first Internode ca. 3 mm. Glume herbaceous, several equal, usually with 9 veins. Lemma hard, first Lemma 15-20 mm long, abaxially with light brown or white hirsute below middle, awn protruding slightly below middle of Lemma, 2-4 cm long, geniculate, awn column brown, twisted. Caryopsis light brown pilose, ventral longitudinally sulcate, 6-8 mm long. The flowering and fruiting period is from April to September.

Wild oats pose a serious threat to cereal crop production. The damage area of the United States and Canada is 100 million acres, with an annual loss of 150 million US dollars. The damage is serious in Australia, the United Kingdom, the Soviet Union, North Africa and the Middle East. Wild oats are also widely distributed in China, mainly in northeast, northwest and Qinghai-Tibet. Wild oats like cool, strong adaptability, common occurrence, large reproduction, easy to spread into disasters, coupled with the human factors in the first 10 years, the harm of wild oats is expanding and serious year by year.

Wild oat taste sweet, warm, return to the liver and lung meridians, with deficiency, perspiration, hemostatic effect, for spontaneous sweating, night sweating, deficiency sweating, hematemesis, metrorrhagia and other diseases, commonly used 1530g. The efficacy of wild oat grass is basically the same as the fruit, for hematemesis, blood avalanche, leucorrhea, hematochezia, spontaneous sweating, night sweats and other diseases, commonly used 15-60 grams.

Oatgrass grazing and utilization because of its high sugar content, good palatability, tall plant, thin stem, more leaves, suitable for preparing hay after harvest, medium crude protein, rich nitrogen-free extract, medium crude fiber content compared with other plant fiber sources, the content of neutral detergent fiber in hay is lower, and it is more palatable than other hay with higher neutral detergent fiber.