T/HNXGJSH 01-2022 Active

Main Technical Content: I. Huaining Early-Ripening Wenzhou Mandarin Grading Standards 1. Basic Requirements for Fruit Shape: - The fruit should have the inherent shape of the variety, with a flat top and a slightly narrower stem. The shape should be consistent, without deformities. The stem should be intact and flush with the fruit surface, without wilting. - Extra Grade: Oval-shaped, with a fruit shape index of 0.79±0.1. - First Grade: Highly oval-shaped, with a fruit shape index ≤0.95 and no obvious bulges near the stem. - Second Grade: Highly oval-shaped to round, with a fruit shape index ≤1.1 and slight bulges near the stem or short necks. 2. Basic Requirements for Color: - The fruit should have the inherent color of the mature variety, with uniform coloration. - Extra Grade: Orange-yellow to orange-red, with a coloration rate ≥80% and no discoloration spots. - First Grade: Orange-yellow, with a coloration rate ≥65% and no significant discoloration spots. - Second Grade: Orange to orange-yellow, with a coloration rate ≥50%. 3. Basic Requirements for Fruit Surface: - The fruit surface should be clean, with smooth skin and large, prominent oil glands. There should be no cracked or rotten fruits. - Extra Grade: Very few injury spots, disease/insect marks, or medication residues. All combined marks ≤1.0 cm2, with the largest single mark ≤0.2 cm2. - First Grade: Allowed minor injury spots, disease/insect marks, or medication residues. All combined marks ≤2.0 cm2, with the largest single mark ≤0.5 cm2. - Second Grade: Permitted small amounts of injury spots, disease/insect marks, or medication residues. All combined marks ≤4.0 cm2, with the largest single mark ≤1.0 cm2. 4. Skin Thickness (mm): - Extra Grade: Fruit waist cross-sectional skin thickness ≤1.5 mm, base skin thickness ≤1.8 mm. - First Grade: Allowed minor injury spots, disease/insect marks, or medication residues. All combine