First, the symptoms of Pythium can infect various parts of the lawn, from the seed to the adult will be victimized, the earlier the time of infection, the greater the damage. If the disease is infected when the seeds are germinated, the germs will become moldy and will not emerge; if they become sick after emergence, the seedlings will trip. After the onset of the adult plant, it is typical to have a villous white hyphae on the turfgrass strain 2 to 3 cm above the ground in the early morning after dew or heavy rain. The mycelium disappears after drying, and the leaves wither and dehydration disappear. After the dry straw color, forming a dead circle. If it continues to heat and humid for several days, the disease will spread rapidly and endanger the entire lawn.
Second, prevention and control measures
1. The establishment of good site conditions to prevent the turf water from being affected by the grass to create a good growth conditions for the turf, so that it is robust and healthy, it is of great significance for the prevention and control of Pythium wilt. Before the turf is planted, the soil shall be ploughed and sifted, the impurities such as stones shall be removed, and the soil with excessively viscous or sandy nature shall be improved so as to have a high quality soil of 20 to 30 cm, and the texture shall be the same; digging in the construction Wherever there is a trench, the backfill should be filled with water and moistened to prevent subsequent collapse of accumulated water; the bed surface should be slightly tortoise-shaped to make the drainage unobstructed; when the turf area is too large, the water must be buried in the buried pipe to reduce the surface area. Accumulation of water to prevent the grass from suffering.
2. The selection of disease-resistant varieties, the use of mixed sowing methods to build grass-cold-season grass in the characteristics of different varieties of different pros and cons. Such as rye grass color is good, as long as the density is appropriate, the lawn is also more delicate, extensive management, fast into the ping, but susceptible to fungal infection; Festuca characteristics and ryegrass are similar, but thick grass, anti-Pythium mildew wilt disease slightly stronger In ryegrass, it also belongs to disease-prone cultivars; while Poa spp. has stronger resistance to Pythium and better grass quality, but it is slower in ping-panning, and the competitive ability of young grass and weeds is too weak. Combining their advantages, they are mixed with 60% of Poa, 15% of ryegrass, and 25% of Festuca so as to make ryegrass and tall fescue grow into platts and increase their ability to compete with weeds. Control the growth of ryegrass and tall fescue, leaving a space for growth of early-maturing pods, so that the advantages of all varieties can be fully utilized. This will not only help prevent Pythium wilt, but also make the quality of the turfgrass to be established. ,low cost.
3. Pay attention to disinfection and sterilization before sowing, careful management of seedlings before sowing can be used mancozeb, antiviral, chlorfluazuron or transplanting spirit 600 to 800 times spray bed surface, disinfection sterilization; also can soak the seeds overnight , Dry the water until the epidermis is slightly wet, use mancozeb 250 to 500 grams to mix 500 grams of seeds, so that the seeds outsourcing a thin layer of powder, which is extremely beneficial to the prevention and treatment of early disease. 10-15 days after the emergence of seedlings to start spraying pesticides, can be used 0.1% of carbendazim plus 0.05% chlorothalonil spray; later if the seedlings grow normally, you can spray less or not, if you find the seedling tip For yellowing, it should be sprayed once every 7 days; after the seedlings are unearthed, weeds should be diligently removed to reduce the air humidity of the seedlings, and to strengthen the ventilation of the seedlings to reduce the chance of infection.
4. Rational fertilization and fertilization should be carried out as far as possible in the spring and autumn. The amount of fertilizer should be determined by the color of the lawn, soil fat, the density of the lawn and the length of the grass. The turf color is positive, the soil fertility is good, the lawn is dense, and grass growing less prosperous; the turf is yellowish, the soil is thin, and the lawn is sparse. The first general fertilization should be applied evenly in the middle and early April, with 10 to 20 grams of compound fertilizer per square meter; the second should be applied evenly around 15 to 25 grams of compound fertilizer per square meter around the 20th of September. Drench the water to fully dissolve the fertilizer. During the rest of the year, yellow grass was not used for fertilization. If the grass was slightly yellow, 0.3% potassium dihydrogen phosphate and 0.5% vinegar could be sprayed. When the yellowing of the lawn is serious, 5 grams of urea per square meter is used as top dressing. Allow the soil to dry properly before fertilizing. Apply water after fertilization and try to let the fertilizer dissolve into the soil and reduce the residual amount of surface fertilizer. Generally, the cold-season turf does not grow yellow during the summer and it will not be fertilized. Fertilization will be excessive, growth will be excessive in the early summer, the lawn will be too long, the cell tissue will be too tender, and the disease resistance will be poor. In addition, the dense grass will affect the ventilation and light transmission, making it easy to produce rot. Mildew and mildew. However, if we are afraid of grass infections, the turfgrass will be seriously deprived of fertilizer, resulting in stagnation of turfgrass growth and reduced resistance. Therefore, in the cold-season turfgrass wilt disease season should be controlled fertilizer but do not let it lack of fat. (on)
We may usually see monitor devices in private cars, and they are called the car cameras. Today I'd like to introduce you another type of car cameras, the car cameras for vehicles with special purpose such as police cars, school buses, tanker trucks, container truck, Taxies, buses... Generally Speaking, the monitor devices used for these vehicles need to be much more stable so multiple car camers should be combined together to reach that monitor effect, then a monitor system formed, and we call this kind of monitor system the Vehicle Surveillance System(Car Security Camera System).
https://youtu.be/UPEGOLalWFo?si=hYvWS3AW3yZsIbAV
The Vehicle Surveillance System(Vehicle Security Camera Vehicle Camera Systems)(a three-layer networked comprehensive monitoring system), composed of a vehicle terminal, a transmission network, and a monitoring center, mainly provides the functions such as the vehicle anti-theft, anti-robbery, driving route monitoring, real-time wireless transmission of video images inside and outside the vehicle, rapid response to accidents, call command and so on, so that the problem of dynamic management of existing vehicles can be solved.
So what advantages of the vehicles with Vehicle Surveillance System(Car Surveillance Camera)?
1. Bank Money Transport Trucks, Tanker Trucks, and other Valuables Transport Vehicles: anti-theft and anti-robbery
2. Passenger Vehicles such as Buses, Long-distance Buses... : ticket anti-theft, passenger anti-theft and anti-robbery
3. Ambulances: patient treatment process monitoring and video recording, which can be as the evidence once the medical malpractice dispute happened
4. Police Cars, Fire Trucks: case handling process video recording, which can be as the material and evidence of the investigation after
5. Environmental Monitoring Vehicles: record the environmental pollution scene (which can be as the prosecution evidence) and transmit real-time informations to the Environmental Monitoring Center meanwhile(which can help the Environmental Monitoring Center take effective measures on the pollution source right away)
6. Trains, Steamships... : security monitoring, real-time recording
7. ...
In conclusion, Sanan Technology has been studying the Vehicle Surveillance Systems(Car CCTV Camera) for over 10 years, and the Vehicle Surveillance System has become our key product line gradually. Sanan has accumulated rich experience in various Vehicle Surveillance Systems Solutions and belive us, we are specialized!
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SHENZHEN SANAN TECHNOLOGY CO.,LTD , https://www.sanan-cctv.com