同；采样时间间隔的大小直接影响管理费用等。另外，即便获取了大量的空间数据，怎样更有效利用这些数据制定合理的作物管理决策往往是很困难的。一些研究者们已经利用统计的方法来更好的建立作物产量差异与作物生长空间差异之间的关系。然而，作物生产不仅受到空间因素的影响，而且受到时间变化的影响。气候因素的变化往往比空间差异更重要，尤其是降雨和温度。有时，在某些年份，空间差异对作物产量可以忽略不计。但是，经过多年“精细农业”实践，可收集大量的有关作物生长信息，利用“反馈”方法，反复修正作物生长条件，使作物生长达到良性循环。



　



参 考 文 献



J.K. Schueller. Technilogy for precision agriculture. Proceedings of the First European Conference on Precision Agriculture,Warwick University,U.K. 8~10,September 1997

C.J. Dawson. Management for spatial variability. Proceedings of the First European Conference on Precision Agriculture,Warwick University,U.K. 8~10,September 1997

Richard Earl, Paul Wheeler, Simon Blackmore, et al. Precision farming – the management of variability. Landwords, Winter 1996

Ian J Yule, Edward Crooks. Precision farming: the price of imperfection. Landwords, Winter 1996

汪懋华. “精细农业”发展与工程技术创新. 农业工程学报. 1999, 56 (1): 1~8

　



Main technique , decision-making and application of



precision agriculture in China



Liu Gang



(Research Centre for Precision Agriculture China Agricultural University



Beijing 100083)



Abstract The kernel of precision agriculture technology is the alteration of traditional farming by the information system. With the integration of geographic information system, position system, decision support system, sensing technology based on mechanization, the goal of agriculture sustainable development will come true. If this technology is put in practice, a new agriculture science and technology revolution will take place, and a important effect on agricultural development will be brought in our country. Therefore, this paper summarizes the components and applied scope of precision agri culture technology, especially on the basis of the situation of our country, some schemes to implement precision agriculture technology are taken.



Key words precision agricuture; geographic information system; position system; decision support system; sensing technology



　




   
     
     


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