On August 8,2009,20 japonica rice varieties nation-wide with better palatability were evaluated by experts organized by North Rice Science and Technology Society.

The emergence of agricultural science and technology cooperation association has opened a new path for the intimate combination of agricultural technology expansion, agricultural science and technology, and rural economy.

Research the developmental plot about North Japonica Rice;

Cultivated factor has the influence on the yield and quality of North Japonica riceⅣ——the number of plant has the influence on the yield and quality;

Point out the problem on north paddyfield`s seed`s industrialization, start from build up conception and inaugurate system, expatiate that practise breed, propagate, extend and distribution is the require to agricultural modernization, and it is the best way to develop the seed`s industrialization.