Based on the data of a long term field experiment of dryland crops, this article points out that yield fluctuation, expressed in fluctuating coefficient, is a regular phenomenon in dryland farming.
根据旱地作物长期田间试验数据，论述了旱作农业生产中作物产量波动性是一个规律性现象，并用波动系数加以表述。
This paper introduces some application examples of bentonite in the fields of agriculture, livestock farming and environmental protection, and gives some test data.
系统地论述了膨润土在农畜业及环境保护方面的应用情况，并列举了一些应用试验数据。
The application of the variable data rolling is introduced by example of the forming theory and manufacturing process of taper leaf spring of farming machinery and vehicle and truck.
以变截面板弹簧形成理论和制造过程为例，介绍了变值轧制成型技术在农业机械和农用运输车变截面板簧制造方面的应用。
In the database design, the farming GIS display of data management, analysis and result is integrated when farming spatial-data, attribute-data and expert system are introduced.
在数据库的设计中，把农田空间数据、属性数据、分析模型和专家系统有机地结合在一起，使数据的管理、分析和结果的显示一体化。
Farming land ranking comes within the scope of work on processing, analyzing and calculating tremendous amount of property data, which is costly, labor-intensive and time-consuming.
农用地定级估价工作涉及到大量属性数据和空间数据的处理、统计、分析计算，是一项耗费人力、财力和时间的艰巨任务。
The data show that there is considerable dynamism; they also make clear that basically we are dealing here with a peasant-like way of farming.
这些数据表明了现实中存在相当大的动力性，也说明我们论述的核心是小农性的农业生产方式。
According to climate data(1970~2000) in the northern farming and pastoral area, the climate change cycle, trend and grassland climate productivity about 30 years were analyzed.
根据北方农牧交错带（定西县1970～2000年）的气候资料，分析了该地区30年来气候变化周期、趋势及其草地气候生产力的变化。
In this system, there are basic farming land geographic information, agronomic knowledge, crop fertilizer needing mathematics models, and data analysis methods.
系统包括农业区的基础地理信息、作物生产知识、作物生长养分需求的数学模型和分析方法。
GIS based farming information system approach which used geographic data base to analysis farming information was discussed and an instance was showed in detail.
提出了一种基于GIS的农牧业信息系统思想，把农牧业信息统一到地理数据库中进行分析处理，并给出了一个基于GIS的系统设计与开发实例。
The data suggests that legacies of farming are continuing to affect people in the modern world.
这些数据表明农耕文化依然对现代人产生影响。
'the data suggests that legacies of farming are continuing to affect people in the modern world.'
这些数据表明农耕文化依然对现代人产生影响。
'the data suggests that legacies of farming are continuing to affect people in the modern world.'
这些数据表明农耕文化依然对现代人产生影响。
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