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grain production     
相关语句
  粮食生产
     Design of the Distribution of Grain Production of China in the 21st Century
     21世纪中国粮食生产布局构思
短句来源
     The influence of grain production behaviors on SOM content was validated using farm household survey data and Cobb-Douglas production function.
     以农户调查资料和Cobb-Douglas生产函数验证粮食生产行为对SOM分布的影响.
短句来源
     The initial reason for the establishment of futures market in China is to stabilize grain production and circulation.
     实际上,我国建立农产品期货市场的初衷主要就是为了稳定粮食的生产和流通,为政府宏观调控粮食生产和流通服务。
短句来源
     Research on Security for Grain Production of Hebei
     河北粮食生产安全问题与生产景气循环研究
短句来源
     The Development Trend of the Grain Production and the Analysis of Influencing Factors in Our Country since 90s Last Century
     20世纪90年代以来我国粮食生产的发展趋势及影响因素分析
短句来源
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  粮食产量
     Comparison and research of grain production forecasting with methods of GM(1,N) gray system and BPNN
     GM(1,N)灰色系统与BP神经网络方法的粮食产量预测比较研究
短句来源
     In order to know the grain production of the future,according to the grey system theory,this article uses the data of the grain production from 2000 to 2004 of Henan province,exert the method of grey forecast model GM(1,1),making a dynamic forecast on the future grain production of Henan province,and provides the scientific decision-making thereunder for the development of Henan province.
     为了解河南省未来几年的粮食产量,本文根据灰色系统理论,利用河南省2000年到2004年粮食产量的资料,运用GM(1,1)灰色预测模型方法,对未来几年河南省的粮食产量进行动态预测,为河南省的发展提供科学决策依据.
短句来源
     This paper introduces a short-term forecasting system of the food and grain production by using econometric and programming models with the consideration of China's peculiarity.
     本文从我国粮食生产的特点出发,以粮食产量预测为目标,在定性与定量分析的基础上,综合考虑计量经济模型与规划模型的特点,构建了粮食产量闭环预测系统,并结合系统仿真技术实现了该系统。
短句来源
     Analysis of change and influence of grain and oil import and export after grain production increasing in China
     中国粮食产量增长后粮油进出口变化及影响分析
短句来源
     3. The sown area of grain decreases 1.15% while sown area of cash crops increase 3. 38% and total grain production decreases 3. 6%.
     3.粮食作物播种面积减少1.15%,经济作物播种面积增加3.38%,粮食产量减少3.6%。
短句来源
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  籽粒生产
     Under higher levels of phosphorus supply, the phosphorus utilization efficiencies in grain production varied from 150. 9 to 350. 9 kg/kg, 229. 8 kg/kg on average. The coefficient of variation was 20. 63%.
     在较高供磷条件下,籽粒生产中的磷素利用效率变化在150.9~350.9kg/kg之间,平均为229.8kg/kg,变异系数为20.63%;
短句来源
     Under lower levels of phosphorus application, the phosphorus utilization efficiencies in grain production ranged from 160. 1 to 448. 3 kg/kg, 223.1 kg/kg on average. The coefficient of variation was 23. 05%.
     在低磷条件下,籽粒生产中的磷素利用效率变化在160.1~448.3kg/kg之间,平均为223.1kg/kg,变异系数为23.05%;
短句来源
     The phosphorus utilization efficiencies in grain production were ranged from 160_1 g/g to 448.3 g/g,and were 223.1 g/g on average,the coefficient of variation was 23.0%.
     籽粒生产中的磷利用效率变化在 16 0 1~ 4 4 8.3g g之间 ,平均为 2 2 3.1g g ,变异系数为 2 3.0 %。
短句来源
     The phosphorus utilization efficiencies in grain production were varied from 150_9 g/g to 350_9 g/g,and were 229.8 g/g on average,the coefficient of variation was 20_6%.
     籽粒生产中的磷利用效率变化在 15 0 9~ 35 0 9g g之间 ,平均为 2 2 9.8g g ,变异系数为 2 0 6 %。
短句来源
     Results showed that both nitrogen use efficiency for plant biomass (NUEp) and that for grain production (NUEg) varied significantly among conventional varieties or hybrid combinations. The range of coefficient of variation (CV) of NUEp and NUEg was relatively wide, but the degree of variation among conventional varieties was greater than that among hybrid combinations.
     结果表明 :1常规籼稻与杂交籼稻氮的干物质生产效率 (NUEp)及籽粒生产效率 (NUEg)在品种 (组合 )间的变化幅度均较大 ,两者的变异系数均较大 ,但杂交籼稻的变化幅度低于常规籼稻。
短句来源
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  谷物产量
     Performing on the designed system, the simulation result of grain production shows that the error of forecasting is no more than in 3%, compared with other common grain production forecasting methods, the accuracy improves a lot, which means the established grain production model is accurate enough to describe the formation process of grain production effectively.
     应用系统对粮食产量进行仿真预测,结果表明预测误差在3%之内,与目前常用的谷物产量预测方法相比,模型精度有很大改进。
短句来源
     The application of differential GPS in grain production figure shows that differential GPS technology can meet the need of grain production estimate.
     差分GPS在谷物产量图生成中的应用表明,差分GPS技术能满足田间谷物测产的需要。
短句来源

 

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  grain production
Extractive substances formed from buckwheat grain production waste
      
The impact of dynamic change of cropland on grain production in Jilin
      
According to the spatial distribution model, the centroids' move of the cropland and the grain production are calculated, whose directions are not consistent.
      
The changing regional distribution of grain production in China in the 21st century
      
This paper examines the changing regional distribution of grain production in China.
      
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