近三十年来,国内外水稻的总产和单产都有很大提高,世界稻谷总产增长了三倍,国际大米市场货源充足,供过于求,价格不跌,竞争激烈,各主产国日益要求将高产和优质更好地结合起来,以质为主.培育和生产优质稻米已成为世界水稻发展的时代潮流. 一、近代水稻优质标准水稻分布于世界各地,食用、加工形式多样,人们爱好也不尽相同,因此,对水稻优质的标准与论价是不完全一致的.但共同的优质涵义,通常一是指品种内在的品质,包括碾米、外观、蒸煮与食味、营养等品质;二是指外在的质量,即物理指 Over the past three decades, the total output and yield of rice at home and abroad have greatly increased. The world’s paddy output has tripled. The international rice market has ample supply and oversupply. The prices are not falling and the competition is fierce. The major producing countries are increasingly demanding High quality and better quality to better combine quality mainly.Cultivation and production of high-quality rice has become the trend of the world rice development.First, modern rice quality standards Rice is distributed all over the world, edible, processing in various forms, people do not like Therefore, the standards of quality and price of rice are not exactly the same, but the common meaning of quality, usually refers to the inherent quality of varieties, including rice, appearance, cooking and eating, nutrition and other qualities; the second is Refers to the external quality, physical means