注：2002年后粮食播种面积为抽样调查数。
要保护好基本农田，稳定粮食播种面积，优化粮食品种结构，着力提高粮食单产。
We must protect primary farmland, keep the area sown to grain stable, improve the structure of grain varieties grown and increase the per unit area yield of grain.
据统计，我国水稻播种面积约占全球粮食播种面积的28.9％，总产量居所有粮食作物的首位。
According to Stat. : The planting area of rice in our country occupy 28.9% of it in the world . The overall output occupy primacy in all foodstuff.
水稻是我国的主要粮食作物之一，其播种面积占全部粮食作物面积的30%，产量则占粮食总产量的40%。
Rice is one of main food crops in China, its planting area accounts for 30% in all food crops and its yield accounts for 40% in total food yield.
水稻是我国第一大粮食作物，占我国粮食40 %左右，其总产量与播种面积列世界第一、二位。
Rice is the first cereal crop and contributes around 40% of the national grain production in China. The total yield and sowing area rank the first and second position in the world, respectively.
东北部生态农业建设区由于耕地面积较少和人口较多的原因，粮食作物播种面积已无压缩余地。
The northeast ecological agriculture region has no space to adjust the crops sown area for the more population and few land.
1959年开始，由于播种面积减少、单产下降、自然灾害等原因，粮食产量连年下滑。
In 1959, various factors such as reduction of sown areas, less yield per unit area and natural disasters contributed to the decrease in grain output.
针对这些问题，笔者提出以下调整措施：(1)降低粮食作物尤其是青稞和小麦的播种面积，增加蔬菜、水果的种植面积。
Based on these results, we put forward following adjustment measures: (1) reduce the grain crop especially the highland barley and wheat, enhance the vegetable and fruit.
近50年的粮食作物产量、粮食作物播种面积和单位面积产量与气温均呈明显的正相关，而与降水的相关性很差。
In this 50 years, grain crops output, the grain crops sown area and the yield per unit of area and the temperature are obviously related, but they are slightly correlative with the precipitation.
在播种面积相对稳定的前提下，只要粮食单产年平均递增1%，就可以达到预期的粮食总产量目标。
C. With a relatively stable cultivation area, China can achieve its desired total grain output target if the annual average increase rate of per unit yield is 1%.
而各地区播种面积的变化对其总产量影响不太明显，但华东和中南地区农业播种面积的持续下降对粮食总产量有较大的抑制作用。
The sown area change has not obvious effects on the production in the various regions, but the continuous decreased sown area has restrained the production in the East and Central South of China.
对西北部生态农业建设区确定粮食作物播种面积每年压缩0.2％的合理比例；
The northwest ecological agriculture region is defined in the proportion of 0.2% every year;
对西北部生态农业建设区确定粮食作物播种面积每年压缩0.2％的合理比例；
The northwest ecological agriculture region is defined in the proportion of 0.2% every year;
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