Abstract: Through covering sun-light made the light intensity, temperature (the highest, the lowest temperature, diurnal range and ground temperature), and humidity changing, dry-matter, grain weight, stem and leaf were also changed. Therefor, this paper analysed the effects of sun-light and temperature on accumulation of dry-matter. The results are as follows: With increasing of intensity of sun-light the accumulation of dry-matter increased, the relations between them are linearlly positive; The increase of temperature could make the photosynthetic intensity increasing. When the temperature was above 21℃, the photosynthetic intensity sharply decreased; the size of diurnal range was no certain relation with accumulation of dry-matter; The relations among ground temperature and dry- matter above ground, accumulation of grain weight were obviously positive. The more the humidity increased, the more the grain weight decreased, the relations between them were linearlly negative.

Key words: Winter wheat Condition of sun-light and temperature Accumulation of dry-matter Grain weight, Winter wheat Condition of sun-light and temperature Accumulation of dry-matter Grain weight