名词
中文翻译：土地指数
同义词：
['land index', 'soil index', 'land quality index']
例句：
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1. The indexof tilth is a crucial indicator for farmers to monitor the health of their crops.
耕地指数是农民监测作物健康状况的关键指标。
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2. The government has launched a project to improve the index of tilth in rural areas.
政府启动了一个项目，旨在提高农村地区的耕地指数。
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3. The index of tilth has been steadily increasing, indicating that the soil quality is improving.
耕地指数稳步上升，表明土壤质量正在改善。