关键词: 气象因子, 气象因子, 水稻, 气象产量

Abstract: The paper aims to design an index of snow damage in controlled-environment agriculture (CEA) simultaneously defined by snow pressure, snow depth, and snowfall, daily snowfall data in Taiyuan from 1980-2013 was used for a statistical analysis. Also,the snow cover of the greenhouse’s surface was chosen for a comparative observation with that of the ground on snow days, and the facility’s load was introduced and amended. Results indicated (1) linear correlations and seasonal differences were significant in the correlation between snowfall and snow depth, snow depth and snow pressure. (2) Comparative observation showed a variancein snow depth and snow pressure among different parts of the facility’s surface, with the top part taking the largest snow pressure, snow pressure ratio of the surface maximum to that ofground observations was approximately0.8,and the snow depth of the facility’s surface was less than or equal to that of the ground. (3) According to the facility’s load and the regression relations among snow pressure, snow depth and snowfall, the snow disaster index simultaneously defined by three factors: snow pressure, snow depth, and snowfallwas devised, and the standard for the three disaster levels: light, moderate and heavy was construed.