小麦实时控制灌溉的土壤水分含量探头合理埋设深度研究

Soil Water Sensor Placement for Precise Irrigation Scheduling Using Soil Moisture Information

利用室内控制试验研究了根据不同深度土壤水分传感器灌溉处理对冬小麦生物学性状及水分利用率等的影响。结果显示,以10 cm探头控制灌溉最为省水,同时冬小麦生物学性状及水分利用率等最佳。由于试验冬小麦处于生育前期,随着小麦生育期延伸,当根系超过30 cm深度时,根系吸水的深度增加,探头的埋设深度需要田间试验进行更详细的研究。

In this paper, simulating experiment was used to study the effect of irrigation treatment based on soil water sensor at different soil depth on the biological characteristics and water use efficiency of the winter wheat. Results show that scheduling irrigation using 10 cm probe can save more water, meanwhile, the biological characteristics and water use efficiency of the winter wheat are all reach the best condition. Due to the experimental winter wheat was in earlier growing stage. However, when the root deeper than 30 cm with the extension of the growing stage, the depth of root water uptake is increasing, buried depth of the probe need more detailed research in the field, so as to achieve the goal of precise irrigation.