Farmland irrigation monitoring device and method based on soil water potential

• Main Authors: MA YANCHUAN, GAO YANG, ZHANG KAI, LI HUANHUAN, CUI WENJUN, NING HUIFENG, QIANG XIAOMAN, LIU HAO, WANG GUANGSHUAI, SUN JINGSHENG
• Format: Patent
• Language: Chinese; English
• Published: 07.08.2018
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The invention provides a farmland irrigation monitoring device based on soil water potential. A pressure sensing device can monitor negative pressure generated by soil on a pottery clay head in real time through conduction of a water conveying pipe, an intelligent data collector can collect pressure values monitored by the pressure sensing device and display the pressure values, a reading error caused by manually reading an index dial of a vacuum meter is avoided, a real-time automatic monitoring function is achieved, soil water potential change can be fed back in time, and scientific and reasonable farmland irrigation is guided. The invention further provides a farmland irrigation monitoring method using the farmland irrigation monitoring device based on the soil water potential. The distribution condition of crop root systems in soil is fully utilized to determine more comprehensive and more scientific multilayer soil water potential values to guide farmland irrigation, limit of tooearly irrigation or too l