民以食为天,食以粮为源。农业是国民经济的基础,粮食是基础的基础。这是个老问题、大问题,绝不可掉以轻心。先列举如下几个材料,从中可思考一些问题:——1989年粮食总产量比1988年增产3.4%,创历史最高水平,走出了5年徘徊局面。但是,由于人口从1986年至1989年平均每年净增1600多万,使人均粮食占有量从1984年394公斤降至1989的366.4公斤。而国际 People use food as their food and food as their source. Agriculture is the foundation of the national economy, and food is the foundation of the foundation. This is an old problem and a big problem. We must not take it lightly. First list the following materials, from which to consider some issues: - In 1989, total grain output increased by 3.4% over 1988, creating the highest level in history, and embarked on a five-year embarrassing situation. However, since the population had a net increase of more than 16 million per year from 1986 to 1989, the per capita food consumption dropped from 394 kilograms in 1984 to 366.4 kilograms in 1989. International