Bromegrass is the worst weed in wheat fields in China. It is an annual or perennial grass weed. Seed germination and seedling emergence are influenced by soil depth, lyrical temperature and air temperature. Seeds located within 5 cm of the soil surface are unearthed before winter. After the beginning of winter, the emergence of seedlings ceases, and after the next year, “clearing and clearing†begins to emerge. In areas where there is frequent occurrence of disease, Bromegrass has high density, strong reproductive capacity, rapid spread, and it is resistant to many herbicides and is difficult to eradicate, putting a lot of pressure on control. Recognition features The identification of seedling brome seedlings mainly through three aspects. One is the shape of the blade and fluff. The leaves of brome are narrow and thin, covered with fluff, while the wheat leaves are broad and fat, smooth and hairless. The second is the root stem color. Bromegrass has a red-brown rhizome, while wheat has a white rhizome. The third is the characteristics of leaf margins. Berry has slender fluff on its margins, and wheat has no hair on its margins. Adult plants of B. henryi grow in the same way as other grass weeds and grow upwards. However, there are obvious differences in appearance. Firstly, the leaf sheath is tightly packed with stalks, leaf sheaths and leaves are covered with villi on both sides, water spray can collect a large number of water droplets; second, the ligule tongue is nearly circular at the tip and has no leaf ears. Spike conical inflorescences, sparse, with weak branches, hanging down, with yellow-green spikelets on the upper part. Spikelets are oblong, flattened on both sides, some are awned, and some are awnless. Control method In the area of ​​recurrence of bromegrass, it is not possible to rely solely on chemical agents to control it. It is necessary to use its seed development characteristics in combination with agricultural measures, supplemented by soil sealing and stem and leaf treatment. Agricultural measures to deep plowing, the soil surface of buffalo seeds deep turned to 10 cm or less, can greatly reduce the degree of brome occurrence. If sowing conditions permit, we can wait until the bromegrass seeds germinate and then weed out the crops and sow the wheat. Soil Closure Treatment Before wheat sowing or after sowing, 200 ml of 40% rymephosin EC per acre is used for soil sealing treatment, which can control the germination of young brome seedlings. After sowing, it should be properly weighed to make the medicine and soil mix. It is also possible to perform a soil closure treatment after sowing with Bybolmar 33% fluthiipazole suspension or Quickset 50% benzylidene isopropanol wettable powder. The 70% sildenazone water dispersible granules for stem and leaf treatment have better control effect on the bird brow, and can be controlled by 2 to 3 grams per mu in the pre-winter weeds 2 to 3 leaf stages. Weeds are also effective. Trimethoprim and methylsulfuron also have good control effects on bromegrass. Functional oligosaccharides refer to oligosaccharides that are difficult or impossible to be digested and absorbed by the human body and have special physiological effects on the human body. Its sweetness is generally only 30-50% of that of sucrose, and it has physiological functions such as low-calorie, anti-caries, prevention and treatment of diabetes, and improvement of intestinal colony structure. Due to the special physiological functions of functional oligosaccharides, it becomes a nutrient and health care product. A new generation of food-effect raw materials that integrate diet and therapy. It is a new functional sugar source that replaces sucrose and has a wide range of uses and application prospects. Common functional oligosaccharides include: xylo-oligosaccharides, fructooligosaccharides, galacto-oligosaccharides, isomaltose, raffinose and so on. XOS, GOS, FOS, IMO, Raffinose, oligosaccharide Xi'an Gawen Biotechnology Co., Ltd , https://www.ahualynbios.com