Scientist Yang Zhenning and Yuan Longping are compared, whose contribution is the largest?

I this year more than 60 years old, the life is in a country. Go up century before seventies, the year's harvest of good weather for the crops a mu of Tian Ye can harvest 300 jins of two paddy, the production team makes grain delivered to the state, commissariat with respect to place remnant very few. Farmer work from dawn to night also cannot cram oneself with food. Since cross paddy was popularized in the country, mu produce broke up severalfold, farmer eventually can satiate! This is a few chiliad come to China farmer first time casts off hunger! Crops for rotation produces instead odd season to produce by Shuang Jisheng. Labour force is put by the solution in busy agricultural production, vast rural area just had industrialization to commercialize revolution, ability had surplus labor force to go in the city the opportunity that Wu is versed in, it is Yuan Longping academician created Chinese farmer to go into town working myth is fabulous! Can say Yuan Longping academician to cannot be done not have to boosting result of Chinese modern course!