黑龙江省3种主要粮食作物的虚拟水量化研究

虚拟水是解决水资源短缺和粮食安全问题的新途径。本研究选取黑龙江省近年来水稻、玉米、大豆产量居前的9个县市作为研究区,计算出2010年-2014年3种粮食作物的初级产品单位虚拟水含量值。结果表明:大豆虚拟水含量值最高,水稻次之,玉米最小,大豆虚拟水含量值是水稻和玉米的3~4倍左右。黑龙江省作为我国重要的商品粮生产基地,商品粮输出导致虚拟水大量输出,因此在农业用水方面应加大提高水资源利用效率。

Research on measurement of virtual water for three major agricultural products in Heilongjiang Province

Virtual water is a new way to solve the problems of water resources scarcity and food security. The paper selected nine counties in Heilongjiang Province in recent years where the yields of rice, corn and soybean is top as the study area, and calculated the unit value of primary products of virtual water content of three kinds of grain crops from 2010 to 2014.The results show that the virtual water content of soybean is the highest, followed by rice, maize.The value of virtual water content of soybean is about 3 to 4 times of rice and Maize.Heilongjiang province is one of China''s important base of commodity grain production.The output of commodity grain leads to large output of virtual water.Therefore,it is necessary to improve the use efficiency of water resources in the field of agriculture.