对土地利用—作物生产系统模拟研究方面的国内外最新进展进行了综述。
The latest advances in the modeling of land use-crop production systems at home and abroad were summarized.
亚马逊：砍伐树木、采矿、农种植作物和牛肉生产导致全球气候系统重要的稳定器——亚马逊雨林的破坏。
The Amazon: The razing of the Amazonian rainforest, a key stabiliser of the globalclimate system, by logging, mining, crop planting and beef production.
布莱克说：“他们提高了生产效率，改良了作物品种，并运用诸如免耕直播及全球定位系统等手段改进耕作方式。
They are getting a lot more efficient; they have a lot better crop genetics and agronomic practices like no-till farming and things like GPS [satellite-dependent global positioning system].
中国人工种植的杨树林和农林复合经营系统(杨树与农作物或畜牧生产相结合)约为800万公顷，是法国杨树种植面积的30倍。
The area of planted poplar forests and agroforestry (combining trees and crops or livestock) in China is about 8 million hectares, 30 times greater than the areas under poplar cultivation in France.
文中探讨了农林复合系统中林带两侧附近作物的生产效能。
This article discussed the crop production efficiency on both sides of the forest belt in the composite system of agriculture and forestry.
免耕与有机作物系统对谷类生产与土壤改善潜在的长期益处，农艺学杂志99，1297-1305。
Teasdale, J. R. 2007. Potential long-term benefits of no-tillage and organic cropping systems for grain production and soil improvement. Agronomy Journal 99, 1297–1305.
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。
In this system, there are basic farming land geographic information, agronomic knowledge, crop fertilizer needing mathematics models, and data analysis methods.
轮作系统不但提高了作物产量，而且总初级生产力、光能利用率、辅助能利用率分别比连作系统高17.47%、9.87%和5.0%。
Moreover, the overall initiative productivity, light energy using rate and assistant energy using rate was increased by 17.47%, 9.87%, 5.0% respectively.
本文阐述了农作物生产管理决策系统中的数学推理方法。
The mathematics reasoning methods of decision system for crop production management were expounded in this paper.
农田生态系统钾平衡研究对作物生产有重要意义。
Then potassium balance studies in agroecosystem are especially necessary for crop production.
沟播处理、缩行密植等优化土壤水流动系统技术，均能较大程度地提高作物的产量和水分生产率；
Such measures as row spacing reduced and close planting and furrow growing are propitious to optimize soil water flow system and they can greatly increase crop's yield and water use efficiency.
应用VFP 6.0作为开发平台，开发了重庆市农业作物统计数据库系统，实现了农作物生产统计数据的计算机化管理。
VFP 6.0 was applied as the exploitation platform in the development of this data base system, and computerization management of statistical data of crop production in Chongqing has thus been achieved.
应用VFP 6.0作为开发平台，开发了重庆市农业作物统计数据库系统，实现了农作物生产统计数据的计算机化管理。
VFP 6.0 was applied as the exploitation platform in the development of this data base system, and computerization management of statistical data of crop production in Chongqing has thus been achieved.
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