摘要
参照农业生物生长发育与太阳光照条件的关系,并根据试验资料,把太阳光照条件划分为暗光区、弱光区、中光区和强光区4级,其光照度分别为≤7×10^2,7×10^2-2×10^4,2×10^4-5×10^4,〉5×10^4lx.晴天条件下,太阳高度角≤0°的太阳光照条件为暗光区,0-20°为弱光区,20-37°为中光区,〉37°为强光区.
According to the demands of crop and livestock for sunlight illumination condition, 4 zones, namely, dark light zone, weak light zone, moderate light zone and strong light zone were divided. The illumination intensity of these zones was divided as ≤7×10^2,7×10^2-2×10^4,2×10^4-5×10^4,〉5×10^4lx. The sunlight illumination conditions were further definited as follows: solar angle≤0° for dark light; solar angle from 0 to 20° for weak light zone; Solar angle from 20 to 37° for moderate light zone; solar angle 〉37° for strong light zone.
出处
《河南农业大学学报》
CAS
CSCD
北大核心
2007年第4期401-404,共4页
Journal of Henan Agricultural University
基金
中国科学院大气物理研究所开放课题资助项目(LAPC-KF-2003-20)
关键词
光照条件
光照分区
暗光区
弱光区
中光区
强光区
illumination condition
illumination classification
dark light zone
weak light zone
moderate light zone
strong light zone