Ma Pi Leng Pass, according to the H’Mong sound, is more accurately written as Ma Pi Leng – also known as Ma Pi Leng or Ma Pi Leng. This pass is famous for its winding roads like a snake wriggling from one mountain to another. The height, ruggedness and length make O Quy Ho pass known as the “king of the Northwest Pass”. The top of O Quy Ho pass is located between the mountains and clouds, also known as the Heaven Gate. In the middle of the pass, it is often cloudy and covered with clouds, at the foot of the pass are scattered villages. When approaching the top of the pass, almost no village can be seen, but only the deep blue sky and majestic mountains seem to blend into one. With a length of more than 20 km, Khau Pha pass is like a dark silk strip crossing the slopes of a highland. Although only 7km long, Cu Mong is considered one of the most dangerous mountain passes in Vietnam. The height of the top of the pass is 245m, the slope is 9%, there are many sharp bends with a small curve radius, the two sides are high mountains. The pass is hidden behind the dark green curtain of Truong Son forest in the west of Quang Binh province. With the bends of the sleeves and the primeval old forest, Da Deo pass is a road that many riders want to challenge. This is the most beautiful pass among the passes on National Highway 3 from Phu Lo to Ta Nung border gate. Coming here, you will see fields of buckwheat flowers in spring and green corn fields in summer. The road of Hai Van pass is winding and zigzagging with majestic mountains on the other side, and the cool blue sea below, forming a magnificent natural picture.

Area planted with genetically modified maize in Tho Hai commune (Tho Xuan). Accordingly, units under the Department of Agriculture and Rural Development have planted some genetically modified maize varieties, such as: DK 6818S, NK 4300BT / GT, NK 7328BT / GT, DK 9955S, NK4300Bt / Gt. , DK6919S … in some localities in the province. The actual assessment shows that the genetically modified maize varieties are highly resistant to pests and diseases, especially for dangerous diseases such as the autumn acacia, so the input cost is reduced by about 10 to 15%. Therefore, the yield of genetically modified maize varieties was 15 to 20 quintals / ha / crop higher than conventional maize varieties and 5 to 7 million VND / ha / crop higher than conventional maize varieties. Due to the proof of economic efficiency, the suitability of farming conditions and qualifications of many localities in the province, in recent years, the agricultural sector and local authorities in the province have encouraged her to Farmers put genetically modified maize varieties into production. Therefore, the model of genetically modified maize is increasingly being replicated, the area planted to genetically modified maize has been expanded according to each production season. In the summer-autumn crop of 2019, Tho Xuan District Agricultural Extension Center (now the Agricultural Service Center of Tho Xuan district) cooperates with DEKALB Co., Ltd. to implement a demonstration model of 2 genetically modified hybrid maize varieties 6919S and DK 9955S, in Tho Hai commune, with 2 sao. These are considered to be 2 genetically modified maize varieties with high yield and superior resistance to the autumn acacia worms. Accordingly, the company has put 2 genetically modified maize varieties: 6919S and DK 9955S into cultivation on the maize land area of ​​Tho Hai commune for trial planting. The actual evaluation from the model shows that, on 2 control maize fields planted adjacent to each other, the maize cultivating area is often destroyed by the autumn acacia worm, affecting the growth, development and yield. However, the planted area of ​​2 genetically modified maize varieties 6919S and DK 9955S still grows and develops well, the rate of damage caused by the autumn acacia and some other pests is low, almost does not affect the quality and productivity. According to calculations of the households implementing the model, the area of ​​genetically modified maize yield from 78 to 80 quintals / ha / crop, about 16 quintals / ha / crop higher than conventional maize varieties, the profit is from 27 to 33 million VND / ha / crop, about 7 million VND / ha / crop higher than the area planted with conventional maize varieties. At the end of the model, many households in Tho Hai commune boldly use genetically modified maize varieties for mass cultivation. On average, each year, the whole commune has about 100 ha of maize planted with genetically modified maize varieties. Particularly in the winter-spring crop 2020-2021, the whole commune has more than 30 hectares of maize planted with genetically modified maize varieties. In Yen Dinh district, genetically modified maize varieties, such as NK4300Bt / Gt, DK6919S, NK7328Bt / Gt, and DK6818S are also being widely cultivated by farmers in many lands. Each year, the district has nearly 1,000 ha of maize planted with genetically modified maize varieties and it is expected that the area of ​​using genetically modified maize varieties for cultivation will be expanded in the next seasons. According to Mr. Trinh Xuan Quy, Head of Agriculture and Rural Development Division, People’s Committee of Yen Dinh district, said: The reason for the rapid expansion of genetically modified marine maize area is because the use of genetically modified maize varieties helps to reduce labor, investment costs and amount of pesticides, thereby, reducing environmental pollution, improving farmers’ income, increasing economic efficiency from 15 to 20% compared to production of ordinary maize. From the benefits brought, Yen Dinh district is continuing to encourage farmers to use genetically modified maize varieties for planting, improving economic efficiency. According to the synthesis of the Provincial Plant Protection and Cultivation Department, the presence of genetically modified maize has been expanded in many districts, such as Cam Thuy, Yen Dinh, Tho Xuan, Ngoc Lac, Vinh Loc, Thieu Hoa, Trieu Son, with a total area of ​​more than 3,000 hectares per year. Most of the area planted to genetically modified maize achieves 20-30% higher economic efficiency than conventional maize varieties. More importantly, the genetically modified maize varieties are highly resistant to pests and diseases, so the amount of pesticide use in the production process is low, significantly contributing to environmental protection, ensuring safety. whole food for product