大闸蟹品质评估数据

评估公司及合作养殖户的大闸蟹养殖品质，通过实时采集养殖环境、生长状态、检测指标等数据，生成品质评估结果，针对评估分数低于 70 分的批次，自动推送水质调节、投喂方案调整等建议，如当溶氧量数据偏低时，触发增氧设备联动指令；建立分级销售机制：依据评估结果将大闸蟹分为特级（90 分以上）、一级（80-89 分）、二级（70-79 分）、三级（70分以下），匹配不同渠道定价，特级品供高端商超，三级品用于加工蟹黄衍生品；对违规用药或环境不达标情况实时告警，保障大闸蟹整体品质稳定，助力大闸蟹标准化生产。品质评估得分 =（环境适配分 *0.3+ 生长指标分*0.4 + 安全检测分*0.3）*品质修正系数；环境适配分（0-100 分）：基于水温（15-25℃为优，满分100分，每偏离 1℃扣 5 分）、溶氧量（≥5mg/L 为优，满分100分，每低 0.5mg/L 扣 8 分）、pH 值（7.5-8.5 为优，满分100分，每偏离 0.3 扣 6 分）；根据（水温得分+溶氧量得分+pH 值得分）/3=环境适配分，加权计算。生长指标分（0-100 分）：包含体重达标率（打标率100%，满分100分，每低 1% 扣 1 分）、蟹黄占比（≥25% 为优，满分100分，每低 2% 扣 5 分）、外壳硬度等级（特级：100，一级：80，,二级：60，,等外：40）生长指标分=（体重达标率得分*0.4+ 蟹黄占比得分*0.3 +外壳硬度得分*0.3）。安全检测分（0-100 分）：农残检测（未检出为 100 分，每检出 1 项超标扣 30 分）。品质修正系数=生态养殖模式系数*养殖周期系数；生态养殖模式（是 = 1，否 = 0.9）、养殖周期（≥180 天 = 1，＜180 天 = 0.9）。品质分析：特级（90 分以上）、一级（80-89 分）、二级（70-79 分）、三级（70分以下）。

This dataset is developed to evaluate the farming quality of Chinese mitten crabs (Eriocheir sinensis) for an evaluation company and its cooperative farmers. It collects real-time data including farming environment, growth status and detection indicators, generates quality evaluation results, and automatically pushes suggestions such as water quality regulation and feeding plan adjustment for batches with an evaluation score below 70. For example, when the dissolved oxygen level is too low, it will trigger a linkage command for oxygenation equipment.

A graded sales mechanism is established: Chinese mitten crabs are classified into four grades based on the evaluation results: Special Grade (above 90 points), First Grade (80-89 points), Second Grade (70-79 points) and Third Grade (below 70 points), and matched with different channel pricing strategies. Special Grade products are supplied to high-end supermarkets, while Third Grade products are used for processing crab roe derivatives.

Real-time alarms will be issued for illegal medication use or substandard environmental conditions, to ensure the overall quality stability of Chinese mitten crabs and facilitate standardized production of the species.

The quality evaluation score is calculated as: (Environmental Adaptability Score * 0.3 + Growth Index Score * 0.4 + Safety Detection Score * 0.3) * Quality Correction Factor.

1. Environmental Adaptability Score (0-100 points): Calculated as (Water Temperature Score + Dissolved Oxygen Score + pH Score) / 3, with specific scoring rules:
- Water temperature: 15-25℃ is optimal, with a full score of 100; 5 points are deducted for each 1℃ deviation from the optimal range.
- Dissolved oxygen: ≥5mg/L is optimal, with a full score of 100; 8 points are deducted for each 0.5mg/L decrease below the optimal value.
- pH value: 7.5-8.5 is optimal, with a full score of 100; 6 points are deducted for each 0.3 deviation from the optimal range.

2. Growth Index Score (0-100 points): Calculated as (Weight Compliance Rate Score * 0.4 + Crab Roo Proportion Score * 0.3 + Shell Hardness Score * 0.3), with specific indicators and scoring rules:
- Weight Compliance Rate: 100% compliance results in a full score of 100; 1 point is deducted for each 1% decrease in compliance rate.
- Crab Roo Proportion: ≥25% is optimal, with a full score of 100; 5 points are deducted for each 2% decrease below the optimal value.
- Shell Hardness Grade: Special Grade = 100, First Grade = 80, Second Grade = 60, Off-grade = 40.

3. Safety Detection Score (0-100 points): 100 points are awarded if no pesticide residues are detected; 30 points are deducted for each item exceeding the standard.

Quality Correction Factor = Ecological Farming Mode Coefficient * Breeding Cycle Coefficient, where:
- Ecological Farming Mode Coefficient: 1 for ecological farming mode, 0.9 for non-ecological farming mode.
- Breeding Cycle Coefficient: 1 for breeding cycle ≥180 days, 0.9 for breeding cycle <180 days.

The final quality grades are consistent with the aforementioned classification: Special Grade (above 90 points), First Grade (80-89 points), Second Grade (70-79 points) and Third Grade (below 70 points).

搜集汇总

背景与挑战

背景概述

该数据集是大闸蟹品质评估数据，包含616条记录，涵盖养殖环境、生长指标和安全检测等字段，通过加权算法计算品质得分并分级，用于标准化生产监控和分级销售管理。其特点在于实时数据采集和自动告警机制，提升大闸蟹品质稳定性。