At present, late rice in South China is at the booting stage, and late rice in the south of the Yangtze River and single-season rice in the middle and lower reaches of the Yangtze River are at the heading and flowering stage. The low temperature is conducive to the "two migration" pests retreat and further expansion of the disease. What are the pests and diseases during the growth of late rice? How to prevent late rice pests and diseases? Let's find out about it. Rice planthopper Rice planthoppers are generally mild to moderate, with an area of ​​90.73 million mu, which is an increase of 1.4% year-on-year. In mid-September and mid-September, significant return peaks were detected in the South China and Jiangnan rice fields. According to the monitoring statistics of 172 rice planthoppers in the country, the average number of trapped insects per lamp was 1,412, a year-on-year decrease of 12.8%; among them, Nilaparvata lugens accounted for 63.5%. Compared with the same period of last year, it decreased by 1.3 percentage points. The amount of insects in the field has increased. The amount of B. punctatus in southern China, the southern part of the Yangtze River, and the middle reaches of the Yangtze River is generally 200-600 heads, 800-1500 heads in height, and over 10,000 heads in local leakage prevention plots; the amount of B. arborescens in the single-cropping rice area in the lower reaches of the Yangtze River is generally 10%. -100 heads, 200-400 heads high, and 1,172 heads high in Jiangsu Jianhu. The amount of eggs in the field is relatively high. For example, the average number of eggs in Hunan is 529.2 eggs, 4.3 times that of the same period of last year. Rice Leaf Roller The rice leaf roller was generally mild to moderate, and the partial rice area was heavy in the lower reaches of the Yangtze River. The current area was 77.38 million mu, which was the same as the previous year. In mid-September and mid-September, peaks were observed at the middle and lower reaches of the Yangtze River and along the southeastern coast of China. Long-term peak times occurred, including Zhejiang Haining, on September 2-12, for 11 consecutive days with over 1000 mos per mu, and high peak moths. The monitoring statistics of 172 rice leaf roller stations were monitored at the regional stations, with an average of 331 single lamp traps, which was 3.1 times that of the same period of last year. The average amount of mu in the south China and south-western rice areas is 50-500 heads and 600-1000 heads high; the amount of moths in the south of the Yangtze River and the mid-lower reaches of the Yangtze River is generally 200-800 heads, and there are 2000-6000 heads along the rivers in the south of Jiangsu Province, Jiangsu Province. Danyang and Jiangxi built over 10,000 heads of new blocks. The amount of eggs in the field compared to the previous two weeks "Southern increase North." The total amount of larvae in South China is 2500-4500 heads, and that in southern Guangxi and western Guangdong is as high as 10,000-30,000 heads. The total amount of larvae in the southern and middle reaches of the Yangtse River is 500-2500 heads and 3000-5000 heads high. The eggs in some areas are relatively high, and the eggs in the north of Zhejiang, northern Jiangxi, and southern Jiangsu are as high as 10,000-30,000 eggs. There are a maximum of 116,000 grains in local land in Quzhou, Zhejiang. The leaf rolling rate in the field is generally lower than 3%, which is 7%-11% higher, and the severe field in Wuning, Jiangxi Province, is as high as 41%. II The stem borer population in the middle and lower reaches of the Yangtze River in the south of the Yangtze River occurred in the whole area. The current area is 48.94 million mu, an increase of 8.5% year-on-year. The larvae of the fourth-generation larvae in the south of southern Jiangyan have gradually entered the egg hatching period. The northern and southern Yangtze Rivers and the middle and lower reaches of the Yangtze River have gradually entered the third generation of adult emergence. The average amount of larvae in the field is 120-750 heads, and the height is 1000-3000 heads. Local Changning, Zhuzhou, Shaodong, Fuyang, and Jiangxi Yongxiu parts are up to 7000-9500 heads. The dry heart rate caused by field damage is generally 0.1%-2%, and the high 2.4%-6.7%. The dry heart rate of the local leakage prevention plot in Chongyang, Hubei Province is as high as 50%. Sheath blight Rhizoctonia occurs in the south China, south of the Yangtze River and the middle and lower reaches of the Yangtze River. The current area is 104 million mu, an increase of 11.3% year-on-year. Affected by relatively recent rainfall, sheath blight is rapidly expanding in the southern China, southern Yangtze and the middle reaches of the Yangtze River. The disease-clustering rate is generally 5%-20%, and is 20%-50% higher. The coastal and southeastern parts of Guangxi and southern Jiangxi Province are localized. Up to 60%-95%; the disease condition in the lower reaches of the Yangtze River is basically stable, the disease cluster rate is generally 10%-35%, and high 40%-60%. rice blast The incidence of rice blast was generally low, and some of the susceptible varieties appeared to be heavy. The current area was 12.24 million mu, which was 2.4 times that of the same period of last year. In southern China, south of Yangtze River, and in the middle and lower reaches of the Yangtze River, the diseased leaf rate is generally 0.1%-2% and high 6%-20%. In Guangdong and Hubei, local disease-sensitive varieties are as high as 40%-60%. The panicle-necked tadpoles are gradually manifested in the southern Yangtze River and the middle and lower reaches of the Yangtze River. The panicle rate is generally 0.1%-1.5%. Jiangxi Yongxiu, Jiangsu Gaochun, and Hubei Hongan local leakage prevention plots are as high as 10%, 18.4%, and 76.3%, respectively. Southern rice black streaked dwarf disease Southern rice black streaked dwarf disease occurred slightly in southern China and southern Jiangbei, and the current area was 560,000 mu, a year-on-year decrease of 68.9%. The disease cluster rate in the South China rice region is generally 1%-5%, and is 10%-20% higher. The local land mass in Guangxi's coastal and northwest regions is as high as 40%-100%; the disease cluster rate in the Jiangnan region is generally 0.1%-3.3%. The incidence rate of Jiangxi Yugan disease was 5.6%, and that of local land was as high as 12%. Many improper technical actions in sports are easy to cause knee joint injury. 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