diff --git a/src/core/water_quality_inversion_pipeline_GUI.py b/src/core/water_quality_inversion_pipeline_GUI.py
index d32fe92..e4e24c4 100644
--- a/src/core/water_quality_inversion_pipeline_GUI.py
+++ b/src/core/water_quality_inversion_pipeline_GUI.py
@@ -1887,16 +1887,16 @@ class WaterQualityInversionPipeline:
                 
             elif method == "sugar":
                 # 强行转换暗号，兼容中文和各种格式
-                raw_method = str(sugar_glint_mask_method).lower()
-                if 'cdf' in raw_method or '累积' in raw_method:
-                    sugar_glint_mask_method = 'cdf'
-                elif 'otsu' in raw_method or '大津' in raw_method:
-                    sugar_glint_mask_method = 'otsu'
+                sugar_glint_mask_method_raw = str(sugar_glint_mask_method).lower()
+                if 'cdf' in sugar_glint_mask_method_raw or '累积' in sugar_glint_mask_method:
+                    sugar_glint_mask_method_fixed = 'cdf'
+                elif 'otsu' in sugar_glint_mask_method_raw or '大津' in sugar_glint_mask_method:
+                    sugar_glint_mask_method_fixed = 'otsu'
                 else:
                     # 默认回退到 cdf 确保不崩溃
-                    sugar_glint_mask_method = 'cdf'
+                    sugar_glint_mask_method_fixed = 'cdf'
 
-                print(f"使用方法: SUGAR (迭代次数={sugar_iter}, 掩膜方法={sugar_glint_mask_method})")
+                print(f"使用方法: SUGAR (迭代次数={sugar_iter}, 掩膜方法={sugar_glint_mask_method_fixed})")
                 
                 # 确定输出路径
                 output_path = str(self.deglint_dir / "deglint_sugar.bsq")
@@ -1930,7 +1930,7 @@ class WaterQualityInversionPipeline:
                     corrected_images = correction_iterative(
                         image_array, iter=None, bounds=sugar_bounds,
                         estimate_background=sugar_estimate_background,
-                        glint_mask_method=sugar_glint_mask_method,
+                        glint_mask_method=sugar_glint_mask_method_fixed,
                         termination_thresh=sugar_termination_thresh,
                         water_mask=mask_for_algorithm,
                         output_path=None  # 不传递output_path，使用pipeline保存
@@ -1940,7 +1940,7 @@ class WaterQualityInversionPipeline:
                     corrected_images = correction_iterative(
                         image_array, iter=sugar_iter, bounds=sugar_bounds,
                         estimate_background=sugar_estimate_background,
-                        glint_mask_method=sugar_glint_mask_method,
+                        glint_mask_method=sugar_glint_mask_method_fixed,
                         water_mask=mask_for_algorithm,
                         output_path=None  # 不传递output_path，使用pipeline保存
                     )
diff --git a/src/gui/panels/step3_panel.py b/src/gui/panels/step3_panel.py
index 77fcc03..5311df5 100644
--- a/src/gui/panels/step3_panel.py
+++ b/src/gui/panels/step3_panel.py
@@ -99,24 +99,22 @@ class Step3Panel(QWidget):
 
         self.oxy_band = QSpinBox()
         self.oxy_band.setRange(0, 200)
-        self.oxy_band.setValue(8)
+        self.oxy_band.setValue(38)
         kutser_layout.addRow("氧吸收波段索引:", self.oxy_band)
 
-        self.lower_oxy = QDoubleSpinBox()
-        self.lower_oxy.setDecimals(2)
-        self.lower_oxy.setRange(0, 1000)
-        self.lower_oxy.setValue(756.54)
-        kutser_layout.addRow("下氧吸收波长(nm):", self.lower_oxy)
+        self.lower_oxy = QSpinBox()
+        self.lower_oxy.setRange(0, 200)
+        self.lower_oxy.setValue(36)
+        kutser_layout.addRow("下氧吸收波段索引:", self.lower_oxy)
 
-        self.upper_oxy = QDoubleSpinBox()
-        self.upper_oxy.setDecimals(2)
-        self.upper_oxy.setRange(0, 1000)
-        self.upper_oxy.setValue(766.54)
-        kutser_layout.addRow("上氧吸收波长(nm):", self.upper_oxy)
+        self.upper_oxy = QSpinBox()
+        self.upper_oxy.setRange(0, 200)
+        self.upper_oxy.setValue(49)
+        kutser_layout.addRow("上氧吸收波段索引:", self.upper_oxy)
 
         self.nir_band = QSpinBox()
         self.nir_band.setRange(0, 200)
-        self.nir_band.setValue(65)
+        self.nir_band.setValue(47)
         kutser_layout.addRow("NIR波段索引:", self.nir_band)
 
         self.kutser_group.setLayout(kutser_layout)