I am very interested in commenting on Guocao and published two articles. The first one is general and the second one is appeal. This is the third article and it is a suggestion. I think that through the evaluation of the grassland activities, people can change their understanding of grass. Because grass that has long been neglected in our country is too important. Grass not only inhibits dust, prevents soil erosion, forms an important ecological barrier, but also creates a good living environment. The creation of a green environment for the Beijing Olympics is inseparable from grass. If a certain province or city has its own provincial grass and city grass, the people are very fond of this kind of grass. Using this kind of grass to beautify their own courtyards and their own cities is very beautiful all year round. This sculpts people’s hearts and minds. The shaping of spiritual civilization is also of great benefit. The idea of ​​commenting on Guoguocao is based on the selection of the national tree, national flower, national bird, and national stone. At the second session of the Tenth National People’s Congress convened in 2004, some representatives proposed that Ginkgo biloba be rated as a national tree and responded to more than one hundred representatives. Subsequently, the relevant departments stated that before 2008, the national tree, the national flower and the national bird were to be judged, and some people proposed to judge the national stone. Therefore, it was called the “Four Kingdoms†selection. As for why we should spend a lot of effort to comment on the "four countries," there are different opinions. Some people say that there are more than 100 countries in the world that have their own national tree. We must also have it. This is a country’s business card. Others say that this symbolizes people’s love of nature and their love of green and the expression of people and nature. Harmony; Some people also say that this is a new kind of totem or a culture. I do not oppose the assessment of the city tree and city flower. I think that since we can evaluate the national tree, the national flower, the provincial tree, and the provincial flower, we can certainly judge the grass, the grass and the city grass. In my opinion, the national tree, the national flower, and the national grass are just a symbol, symbolizing the love of a country, a province, and a city for trees, grass, and flowers. Why love? It can be natural, it looks good, it is suitable for the growth of the area, it can also be cultural, for example, has a long history, has been praised by ancient literati, of course, may also be other aspects, such as a place Unique and so on. Therefore, I think that the national tree and the national flower can be evaluated and the national grass can be evaluated. If we judge the country, I think that Zoysia should participate in competition. Among the large number of valerian grasses, I devaluated Zoysia grass as the national grass. The reasons are as follows: First, China is one of the producing areas and the main distribution areas of the grasslands. Zoysia japonica is a perennial grass plant whose origin is in Southeast Asia, mainly in China, North Korea, and Japan. China has a large area of ​​distribution and is rich in wild resources. The Liaodong Peninsula alone has 53,000 hectares. It can produce more than 1,000 tons of seeds each year. It is the only turfgrass species that can be used for seed production in China. Not only that, Zoysia is also one of the few turfgrass species in China that first opened the international market. Second, although Zoysia japonica is a warm-season grass species, it has a wide range of adaptation in China. It is located in the temperate coniferous and broad-leaved mixed forest area in Harbin, Mudanjiang and Changchun, and in the tropical season south of Haikou and Kaohsiung. Rain forest and rain forest area, west to Wuwei, Zhangye, Dunhuang, Urumqi and other temperate desert areas, can use it to build a lawn. Of course, the length of the green period varies from place to place, and establishment management also requires different measures. However, Zoysia grass has such a wide range of adaptation that it is not available in many other turfgrass species. Third, zoysiagrass is a turfgrass species that requires very little water. As we all know, both China and the world are facing serious water shortages. According to the experiment, during the growing season in Beijing (April 18 to October 8), the evapotranspiration of tall fescue, Kentucky bluegrass, perennial ryegrass, Bermuda grass root, and buffalo grass were 792 mm, 755 mm, and 745 mm, respectively. , 741 mm, 679 mm, and Zoysia only 624 mm, its value is 78% of tall fescue, and the water consumption is the lowest in the same growth period. Because of this, there are broad application prospects in our country. Fourth, zoysiagrass has lax soil requirements and can adapt to brown soil, cinnamon soil, red soil, yellow soil, meadow soil and other different types of soils with different pH, and it is very resistant to barren soil. Even if the soil layer is only 30 cm, livestock and poultry are frequent. Trample, in the soil solid up to 15 kilograms per cubic centimeter to 20 kilograms, and its coverage can reach 80% to 90%. Fifth, Zoysia japonica as a turfgrass species, its leaves tough and elastic, even if it is yellow, it is still resilient, strong elastic, very wearable, resistance to trampling, not only suitable for the establishment of various sports fields, but also open lawn One of the grass species of your choice. Zoysia has this characteristic because of its well-developed vascular bundles and tough cuticles. Sixth, Zoysia grass is not only a very good turfgrass species, but also plays a unique role in water and soil conservation and prevention of soil erosion. This is because Zoysia grass is a rhizome grass, and the stolons and rhizomes are well-developed, and a dense root layer of 4 cm to 5 cm thick can be formed below the surface of the earth. The soil-retaining performance is very good, so farmers call it “protectiveâ€. Shanpi." Seventh, Zoysiagrass is also a good pasture with high grass production. If it is used for grazing, one hectare can feed one cow. If it is forage, it can be cut four to six times a year. Grassland has a long life span of up to 100 years. Of course, in northern China, Zoysia has a shorter green period than some turfgrasses, but we can improve it through seed selection, breeding, and other cultivation measures. Because Zoysia has so many advantages, people call it the national treasure in China's turfgrass. Professor Dong Houde who has conducted in-depth research on Zoysia grass has predicted that Zoysia will become the main grass seed in China in the 21st century. However, we did not seriously study and vigorously promote the use of such a good grass species. Assessing the country's grass, knotted grass deserved! (Source: China Flower News) Muffle Furnace,Lab Muffle Furnace,Muffle Furnace Use,Electric Muffle Furnace Ningbo Cland Medical Instruments Co., Ltd. , https://www.ruipumedical.com