围框淹灌仪器法测定土壤田间持水量试验研究  

Experimental Study on Soil Field Water Capacity Determination by Enclosing Frame Flooding Instrument Method

作　　者：钟永红[1] 吴勇[1] 杜森[1] 姚丽 孟范玉[5] 王彩绒[6] ZHONG Yonghong;WU Yong;DU Sen;YAO Li;MENG Fanyu;WANG Cairong(National Agricultural Technology Extension Service Center,Beijing 100125,China;Beijing Peide Weiye Technology Development Co.,Ltd.,Beijing 100097,China;Key Laboratory of Agricultural Information Software and Hardware Product Quality Testing,Ministry of Agriculture and Rural Affairs,Beijing 100097,China;Beijing Agricultural Intelligent Equipment Engineering Technology Research Center,Beijing 100097,China;Beijing Agricultural Technology Extension Station,Beijing 100029,China;Northwest A&F University,Yangling Shaanxi 712100,China)

机构地区：[1]全国农业技术推广服务中心,北京100125 [2]北京派得伟业科技发展有限公司,北京100097 [3]农业农村部农业信息软硬件产品质量检测重点实验室,北京100097 [4]北京农业智能装备技术研究中心,北京100097 [5]北京市农业技术推广站,北京100029 [6]西北农林科技大学,陕西杨凌712100

出　　处：《农业工程》2021年第10期80-85,共6页AGRICULTURAL ENGINEERING

基　　金：北京市农林科学院创新能力建设项目(KHCX20210411);北京市科技计划项目(Z181100002418003);北京农业智能装备技术研究中心开放课题(KFZN2020W002)。

摘　　要：田间持水量是重要的土壤水分常数之一,是开展墒情评价和旱情分析,指导科学灌溉不可缺少的基础信息。传统的土壤田间持水量测定方法操作复杂,给土壤墒情评价带来一定难度。通过将先进的无线土壤测量传感技术与传统的围框淹灌法相结合,提出了一种基于无线传感器的新方法,利用“滑动平均含水量法”和“移动平均法”计算确定土壤田间持水量,并在陕西、北京、吉林和河北不同土壤类型的农田开展验证试验。结果表明,与传统环刀法相比,围框淹灌仪器法测定结果的平均相对误差为4.89%,不同质地土壤上测定结果均比较稳定,两种方法测定的田间持水量随土层深度的变化规律一致。围框淹灌仪器法测定土壤田间持水量具有可靠性和便捷实用性,是土壤墒情监测与评价的有效方法,适宜推广应用。Field water capacity is one of the important soil moisture constants,and it is the basic information indispensable for carrying out moisture evaluation and drought analysis to guide scientific irrigation.Traditional indoor and outdoor methods for measuring field water capacity are complex to operate,which brings certain difficulties to soil moisture evaluation.By combining advanced wireless soil measurement sensor technology with traditional framed flood irrigation method,a new method based on wireless sensors was proposed,which used“moving average moisture content method”and“moving average method”to calculate and determine soil field capacity.Validation experiments were carried out on farms with different soil types in Shaanxi,Beijing,Jilin and Hebei.Results showed that compared with traditional ring cutting method,average relative error of measurement results of framed submerged irrigation instrument method was 4.89%.The results were relatively stable,field capacity measured by the two methods was consistent with variation of soil depth.The framed submerged irrigation instrument method was reliable,convenient and practical for measuring soil field capacity.It is an effective method for soil moisture monitoring and evaluation and suitable for popularization and application.

关 键 词：围框淹灌仪器法 土壤田间持水量 土壤墒情 自动监测 滑动平均含水量法 土壤含水量动态 

分 类 号：S274[农业科学—农业水土工程]