结实期温度与稻米品质的关系

The relationship between temperature during seed setting and rice grain quality was studied by adopt ing artificially controlling temperature. The results indicated that mean daily temperature during grain filling influ enced remarkably head rice rate, chalky rice rate,amylose content, alkali spreading value and protein content. It was different from various variety types that effect of mean daily temperature on the same grain quality character istic. The relation between mean daily temperature and grain quality characteristic was curved line. The effect of the temperature range from 25℃ to 27℃ was great comparatively and that of the high temperature above 27℃ was small. To sum up, the comparatively low mean daily temperature during filling favored raising rice grain quality.