土壤墒情监测系统在特色林果种植中的应用

引进土壤墒情自动监测系统,以枣树及葡萄为试种对象,采用烘干法测定值为标准,分析研究了土壤墒情监测系统监测的土壤含水率的准确性.试验结果表明,果树根区0~10 cm土壤含水率变化最为剧烈,10~20 cm土壤含水率变化相对平稳,20~40 cm土壤含水率最大且为试种果木根系主要的分布层,器测值与烘干法测定值变化趋势与幅度较为接近;器测数据相对烘干法测定值误差范围在-4.19%~9.26%,大部分误差值在1%~4%,误差较小;将烘干法测定值与同时、同地器测土壤含水率拟合,拟合方程为y=0.944 9x+0.410 7,拟合度达0.922 5,说明该型土壤墒情监测系统的传感器能够准确地测定土壤含水率.

Soil moisture monitoring system in the application of cultivation of characteristic fruit industry

Introducing automatic monitoring system for soil moisture, taking jujube trees and grapes as tested objects and using the measured value by drying method as standards, the paper analyzed the accuracy of soil moisture content monitored by the system for soil moisture. The test results shows that the soil moisture content of fruit trees root zone 0-10 cm is the most dramatic change, the soil moisture content of fruit trees root zone 10-20 cm changes relatively stable, the soil moisture content of fruit trees root zone 20-40 cm is the highest and the zone 20-40 cm is the main distribution layer of tested fruit tree roots. The trend and amplitude of value measured by instrument and drying method are more approximate. The error range of instrumental data is -4.19% to 9.26% compared with the measured value by drying method, the most of the error value is between 1% and 4%, which is small. The soil moisture content measured by drying method is fitting to that measured by instrument at the same place and time, the fitting equation is y= 0.944 9x＋0.410 7, and the degree of fitting is 0.992 5, which shows that the type of sensors in the monitoring system for soil moisture can accurately measure soil moisture values.