Which country's patent is hybrid rice?

It is theoretically impossible. He got hybrid rice too early, and China didn't have a patent law until 1985. And so far, the patent law has not protected new plant varieties.

20 19 10 2 1, the third generation hybrid rice was planted for the first time in Zhuqing Village, Hengnan County, Hengyang City, Hunan Province, with a yield per mu of 1046.3 kg. The third generation hybrid rice technology uses genetically engineered male sterile lines as genetic tools, so that all rice can theoretically find their own "other half" and produce excellent offspring.

With the application and popularization of hybrid rice, the yield per unit area has been increased and the seed consumption has been reduced. Direct seeding cultivation technology of hybrid rice is a simplified cultivation method, which saves the traditional process of rice cultivation and seedling raising, and directly sows germinated rice seeds into the field for management, so that they grow into seedlings, tiller and mature.