中文摘要：

根据土壤-作物-大气连续体（SPAC）理论，水分在连续体内的运动主要由水势差决定。准确测定农田水势对于实施精准灌溉十分重要。文章介绍了基于农作物微环境信息采集与处理，通过混合软测量模型整体估算农田水势的新方法。

英文摘要：

In accordance with the theory of Soil-Plant-Atmosphere Continuum （SPAC） , the motion of moisture in the continuum is decided chiefly by the water potential difference.For the implementation of precision irrigation （ PI ） , it is most important to measure precisly farmland water potential.A new method estimating farmland, water potential based on information collection and procession of tiny environment for farmland crops is introduced.