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油菜氮素光谱定量分析中水分胁迫与光照影响及修正 Effect and Correction of Water Stress and Lighting Factor on Rape Nitrogen Content Spectral Analysis
油菜 含氮量 光照 水分胁迫
2009/5/18
研究了油菜氮素和水分胁迫在光谱检测中的相互作用,以及光照的变化对作物光谱检测的影响。为了克服光照因素对光谱检测的影响,针对氮素和水分的特征波长分别建立了基于光谱反射率变化率的光照修正模型;为了实现对氮素和水分相互作用的解耦,针对不同含水率水平的植株分别建立了全氮含量光谱特征的主成分回归模型。利用氮素光谱组合分析模型对植株全氮含量进行预测,结果表明,实测值与预测值的相关系数R为0.92,均方根误(R...
Influence of Intermittent Lighting on Broiler Performance, Incidence of Tibial Dyschondroplasia, Tonic Immobility, Some Blood Parameters and Antibody Production
Lighting Broiler Performance Tibial Dyschondroplasia Tonic Immobility Relative Asymmetry Blood Parameters Antibody Production
2016/4/25
The aim of this study was to determine the effect of two lighting programs (continuous lighting (CL) 24L:0D and intermittent lighting (IL) 1L:3D) on the broiler performance, carcass traits, incidence ...