中文摘要：

由于蔬菜需求量的增加,中国的蔬菜产量不断增加;然而蔬菜地的化学污染会威胁到中国的食品安全。基于蔬菜和粮食作物的播种面积和产量、农业生产投入价格指数、单位面积的农业物质投入、蔬菜和粮食作物生产者价格指数和净利润等数据,本文计算分析了蔬菜地污染造成的中国潜在食品安全风险的变化趋势。研究表明,由于改革开放以来对蔬菜饮食的公共需求的不断增加和蔬菜高的市场价格,蔬菜的播种面积和产量显著增加;然而由于研究时段内蔬菜种植比例的增加,农业物质投入增加所带来的潜在污染风险也在不断增加。通过控制蔬菜地污染,中国的食品安全问题可以得到较大改善。

英文摘要：

Vegetable yields have increased in China because of the increasing demand for vegetables; however, chemical contamination present in vegetable fields threatens food safety in China. Based on the data for the areas under cultivation and yields of vegetables and grains, price indices for agricultural production inputs, agricultural materials per unit area, producer price indices and net profits from vegetable and grain production, the potential for food safety risks in China caused by contamination of vegetable fields was analyzed based on comparison between vegetables and grains of areas under cultivation, yields, net profit, and agricultural materials use per unit of area. The author found that the area under cultivation and yield of vegetables have significantly increased because of increasing public demand for vegetables in the diet and high market prices for vegetables since the initiation of socialist market economy reforms; however, the potential risk from the application of agricultural materials increased during the study period as the proportion of vegetable planting increased. Food safety in China could be improved by controlling contamination in vegetable fields.