Abstract: To achieve the food production channels on the rice cultivation of the main "more than one season,two seasons insufficient" and season rice producing areas in China. In this context,a contrast experiment was done to study rice quality and economic efficiency in the ratooning rice,early season rice and late rice. Compared with the early season rice and late rice,ratooning rice realized pesticide zero input,decreased fertilizer and irrigation water application amount,lowered production cost,reduced labor intensity,maintained economic stability. Improved the rate of brown rice,milled rice and head milled rice,decreased rice grain shape,chalky ratio and chalkiness area,increased gel consistency,gelatinization temperature and the contents of amylase,total starch and protein,thereby improved rice grain quality to a certain degree. Ratooning rice met the requirement of the simple and labor saving cultivation and agricultural resources less investment,realized "planting season,two harvests a year",developed channels to increase food production,was of great significance to food security and stability in China.

Key words: Rice, Yield, Economic efficiency, Rice quality

CLC Number: 

• S511.01