# 故事 2.6: Comparative Analysis - 现有系统增强

## 用户故事
**作为** farm manager, **我想要** compare data from different lands or time periods, **以便** I can discover changing trends and optimization opportunities。

## 故事上下文

**现有系统集成:**
- **集成于:** Existing land data, historical records, and agricultural analysis systems
- **技术栈:** React 19 + data comparison algorithms + visualization libraries + report generation
- **遵循模式:** Modern comparative analysis with multi-dimensional data comparison and trend analysis
- **接触点:** Data comparison, chart analysis, report generation, time-based analysis

**变更范围:**
此增强功能 在保持兼容性的同时，实现... with existing land data and historical records.

## 验收标准

**功能需求:**
1. 实现...，具有...