覆膜农田SPAC系统模型中能量参数的确定  

Energy Parameters in SPAC Model for Mulched Field

作　　者：殷立平[1] 赵春芬[2] 吴从林[3] 黄介生[1] 

机构地区：[1]武汉大学水利水电学院,430072 [2]海河水利委员会,天津市300170 [3]中国科学院武汉岩土力学所,430071

出　　处：《中国农村水利水电》2002年第12期31-33,共3页China Rural Water and Hydropower

基　　金：国家自然科学基金重点项目 (5983932 0 )

摘　　要：采用SPAC系统模型来模拟和预测大田作物的水热运移规律时 ,系统内各特征参数的确定是比较困难的。根据北京水科所永乐店试验站的气象观测资料 ,对农田SPAC系统中的上边界能量参数的确定作了初步分析 ,结果表明 ,所确定的参数具有一定的适用性。Energy parameters such as the reflectance, transmittance and emissivity of the canopy and mulch layer in SPAC model for mulched field are very important for the simulation of water and heat movements. In this paper these parameters were studied based on the datum observed in Yongledian irrigation experiment station in Beijing. The results showed the determined parameters are appropriate to the SPAC model proposed previously.

关 键 词：覆膜 农田SPAC系统 能量参数 叶面积指数 水热运移 农田作物 冬小麦 

分 类 号：S512.1[农业科学—作物学]