水稻株型因子对冠层结构和光分布的影响与模拟  

Effect and Simulation of Plant Type on Canopy Structure and Radiation Transmission in Rice

作　　者：胡凝[1] 姚克敏[1] 张晓翠[2] 吕川根[3] 

机构地区：[1]南京信息工程大学应用气象学院,江苏南京210044 [2]扬州大学农学院,江苏扬州225009 [3]江苏省农业科学院粮食作物研究所,江苏南京210014

出　　处：《中国水稻科学》2011年第5期535-543,共9页Chinese Journal of Rice Science

基　　金：国家自然科学基金资助项目(30871479)

摘　　要：以3个具有代表性株型的杂交稻为材料,并结合上位2叶伸长期施用氮肥以调节上部叶片的形态,于齐穗期、齐穗后10d、齐穗后25d平行测定了株型元素-分层叶面积-冠层光分布。用试验数据验证了由水稻株型因子计算分层叶面积的解析模型,并用该模型分析了3个材料株型因子对冠层结构的影响。进一步根据作物群体光分布模型,验证了分层叶面积与冠层内光分布的数值关系,并用该模型分析了3个材料株型因子对冠层内辐射分布的影响。实现了由水稻株型因子估算冠层结构和冠层内光分布的方法。By using three rice hybrids with typical plant types as materials, and changing their morphology of uppermost two leaves through N fertilizer application during the elongation of the two leaves, relationships among plant type factor, layered leaf area and radiation transmission were determined at the full heading stage, 10 and 25 days after full heading, respectively. A model for calculating the layered leaf area by plant type factors was established and validated, and were subjected to analyze the effects of plant type factors on layered leaf area of the three hybrids. Furthermore, the relationship between layered leaf area and radiation transmission was validated using a light distribution model for plant canopy radiation transmission, and the effects of plant type factors on radiation transmission for the three hybrids were conducted by this model. Thus, a method for calculating canopy structure （layered leaf area index） and radiation transmission was estahlished by plant type factors in rice.

关 键 词：水稻 株型 分层叶面积 辐射分布 模型 

分 类 号：S511[农业科学—作物学]