作物生长对土壤水分变动的双重效应

The double effects of crop growth on soil moisture fluctuation.

阐述了植物对水分胁迫后复水的双重响应——滞后作用和补偿效应。水分胁迫对植物造成的不利影响,可以通过复水完全或者部分补偿,这取决于水分胁迫的程度和胁迫持续时间。植物在水分胁迫后是否存在补偿效应是目前国际上生物学研究与争论的热点。从植物整体出发,利用对作物生长和水分关系已有的认识及作物生长对水分变动响应的2种效应,建立作物生长对水分经历反应的时间滞后模拟模型,是今后研究的一个重要方向。

A review was conducted to study the double effects, lag effect and compensation effect of the plants,on rewatering after water stress. The unfavorable effects of water stress on plant can be compensated completely or partly,depending on the extent and sustainable time of water stress. Whether the compensatory effect exists or not is the focus in biological studies in the world. Establishing a time-lag simulation model to explain the effects of soil water conditions on crop growth from the view of whole plants is an important studying target based on the knowledge of crop growth and water relationship and the double effects of crop on the fluctuation of soil moisture.