Unit 5 Working the Land-【红对勾讲与练】2022-2023学年新教材高中英语选择性必修第一册(人教版)

UNIT 5　 WORKING THE LAND 课时作业17 　 　 　 　 　 　 　 　 　 　 　阅读理解 A The third-generation hybrid rice which was developed by Yuan Longping, the “ father of hybrid rice”,and his team, underwent its first public yield (产量) monitoring from Monday to Tuesday and achieved high output. The final yield of the tested variety, G3-1S / P19, came to 1,046. 3 kg per mu ( about 667 square meters), based on two plots of land in Qingzhu Village under the city of Hengyang in central China􀆳s Hunan Province. “Some previous high-yielding hybrid rice varieties in China took 160 to even 180 days from sowing to harvesting, while the figure was shortened to around 125 days for the new variety. This is one of the most important characteristics of the third-generation hybrid rice that can reduce the use of pesticides and fertilizers, thus reducing cost and improving production efficiency,” said Qian Qian, the deputy director of the China National Rice Research Institute. Unlike the previous two generations that required a large amount of water and fertilizers as well as demanding growing conditions and technological support, the third-generation hybrid rice is easier to be cultivated by ordinary farmers. So the soil, altitude and climate of the test site were not “ ideal conditions” carefully selected beforehand but were close to the paddies of ordinary farmers. Nowadays, China􀆳s average yield of rice is about 500 kg per mu. Ordinary farmers can produce 600 kg to 700 kg of rice per mu by growing some excellent second-generation hybrid ri