What is the yield per mu of hybrid rice?

0 1 The average yield of hybrid rice in conventional cultivation is about 1000-3000 kg/mu. Due to different sowing time, methods and management methods, the yield will be different. Hybrid rice is suitable for planting in areas with abundant sunshine and precipitation, such as Hunan, Hubei, Yunnan, Jiangxi and other southern regions. For example, on June 2, 2020, in Zhuqing Village, Hengnan County, Hengyang City, Hunan Province, the yield per mu of hybrid rice led by Yuan Longping reached 1530.76 kg.

Hybrid rice refers to the selection of two rice varieties with certain genetic differences, whose excellent characters can complement each other to produce the first generation hybrid with heterosis, that is, hybrid rice. Generally, hybrid rice only refers to the first generation hybrid formed by crossing two sterile lines and restorer lines with the same genetic background. The large-scale popularization of hybrid rice mainly uses rice male sterile lines as genetic tools. China is the first country in the world to successfully develop and popularize hybrid rice. Hybrid rice has high heterozygosity, separated offspring and seed production every year.

Under conventional planting, the average yield of hybrid rice is about 1000-3000 kg/mu, and the yield will be different due to different sowing dates, methods and management methods. Hybrid rice is suitable for planting in places with sufficient heat conditions, and there is also sufficient sunshine and precipitation, such as southern areas such as Hubei, Hunan, Jiangxi and Yunnan, which are all places with high yield of hybrid rice. The cold climate in the north is too long, the temperature difference between day and night is too large, and the growth cycle of crops is long, which is not suitable for planting hybrid rice. From 2019102/kloc-0 to 22, the third-generation hybrid rice was planted for the first time in Zhuqing Village, Hengnan County, Hengyang City, Hunan Province, with a yield of 1046.3 kg per mu.

The third generation hybrid rice technology uses genetically engineered male sterile lines as genetic tools, which theoretically enables all rice to find suitable ones. The other half and produce excellent offspring. The third generation hybrid rice not only has the advantages of stable fertility of three-line sterile lines and free combination of two-line sterile lines, but also overcomes the shortcomings of limited combination of three-line sterile lines, which may lead to seed production failure and low reproductive yield due to weather. It is stable sterile in any area and at any time, and seed production and reproduction are very simple.

Li, a researcher at Hunan Hybrid Rice Research Center and the host of the third generation hybrid rice project, said that shortening the yield gap between farmers' production fields and scientists' experimental fields is one of the key factors that can be widely promoted. ? At present, the average yield per mu of rice in China is about 500 kg. Under normal circumstances, ordinary farmers can plant some excellent second-generation hybrid rice varieties to reach 600 to 700 kilograms per mu, but under the same planting conditions and environment, the third-generation hybrid rice can reach 800 kilograms per mu. ? On June 2, 2020165438+1October 2, the yield per mu of hybrid rice led by Yuan Longping reached 1530.76 kg, including 6 kg of early rice19.06 kg and 3 generations of hybrid late rice. Sanyou No.1? 9 1 1.7 kg, exceeding the expected target 1500 kg.