| 1. | Factor analysis model is constructed to analyze variables influencing yield and sown area in grain production
摘要在建立因子分析模型基础上，本文对中国粮食单产和播种面积的影响因子进行了实证分析。 |
| 2. | A factor analysis model is constructed to analyze variables influencing yield and sown area in grain production
摘要在建立因子分析模型基础上，本文对中国粮食单产和播种面积的影响因子进行了实证分析。 |
| 3. | Until 1980 , the sown area of japonica rice in our country was only 11 percent of total rice , and the output of it was merely 10 . 76 percent
直到1980年，我国粳稻种植面积只占水稻的11 ，粳稻产量也仅为稻谷总产量的10 . 76 。 |
| 4. | Given a relatively stable sown area , china can achieve its desired total grain output target if the annual average increase rate of per unit area yield is one percent from 1996 to 2010 and 0 . 7 percent from 2011 to 2030
在播种面积相对稳定的前提下，只要1996 ? 2010年粮食单产年均递增1 ， 2011 ? 2030年年均递增0 . 7 ，就可以达到预期的粮食总产量目标。 |
| 5. | Sowing areas of inner mongolia changed from low - yield crops to maize , wheat , soybean and potato , in 2001 , total sown areas was 5031 thousand hm2 , grain production was 14 . 285 million tons
主要农产品的综合供给能力得到提高，农业产值及农民人均纯收入连续增长。主要粮食作物播种面积由以杂粮为主演变为以玉米、小麦、大豆、马铃薯四大作物为主的格局。 |
| 6. | ( 8 ) the most limited factor to the sustainable land use is the water resource , due to the increase of the crop yield and the crop sowing area , so it is important for sustainable land use to decreasing irrig
门）士地利用变化及其效应的可持续评价表明，曲周县存在的最主要的不可持续因素是耗水作物的大面积种植造成的水资源压力，局部地下水硝态氮和重金属含量超标，对区域的种植结构调整。 |
| 7. | Some scholars argue that when the output of grain falls below a certain amount , there comes the problem of grain security or grain crisis ; or when sown areas of farming land fail below a certain amount , there also comes the problem of grain security in china
摘要一些学者认为，粮食产量低于一定的数量，就意味着出现了粮食安全问题或者存在粮食危机；播种面积低于一定的数量，意味着中国出现了粮食安全问题。 |
| 8. | At present , the entire area for chinese traditional and herbal medicine sown area amounts to 25 , 000 mu , the chinese goldthread rhizome standardization sown area has amounted to 15 , 000 mu , and 10 chinese goldthread rhizomes chinese traditional medicines bases village have been completed with yearly production 3 , 800 tons
目前全区中药材种植面积达2 . 5万余亩，其中黄连标准化种植面积已达1 . 5万亩，已建成10个黄连中药材基地村，年产3800吨。 |
| 9. | In recent 20 years , the japonica rice production has been developing relatively fast , by 1990 the sown area of it was 16 per cent of the total area of rice , the output was 17 . 76 per cent of the total output of rice ; in 2001 , they rose to 23 . 13 per cent and 25 . 83 per cent respectively
近20年来，我国粳稻生产发展较快，到1990年粳稻种植面积已占到水稻的16 ，产量已占到17 . 76 (前人调查) ；到2001年又进一步分别增长到23 . 13和25 . 83 (笔者调查) 。 |
| 10. | Firstly , this paper has to solve the problem of how to separate the data of japonica rice from rice , for until now the authorities has n ' t published japonica rice production statistical data in china . by means of overall survey , typical survey and the collection of correlated statistic materials , this paper calculates the sown area and output of japonica rice of every one of japonica rice production provinces and all over the country , obtains the dates of consumption and trade of japonica rice in china and the world
本文首先要解决粳稻(米)数据从水稻中剥离的问题，因为直到现在，我国还没有粳稻生产的统计数据，通过全面调查、典型调查和相关统计资料的收集，推算出我国相关各省区的粳稻面积和产量以及全国的粳稻种植面积和产量，得到我国粳米的消费和贸易数据，以及世界粳稻的生产和贸易数据。 |
