摘要
对烘干法测定土壤含水量的效率问题进行了研究。通过对比试验提出了用微波炉烘土、0.1g感量药用托盘天平称重的测定方法,在保证测量精度的前提下,可较常规方法提高效率50倍左右。针对中子水分仪垂直分辨率较差的问题,提出一套用γ透射法现场测定田间土壤含水量的装置和方法。试验结果表明,该法测量误差一般不超过2％。
The paper studies the efficiency issue of measuring soil moisture by stoving method.It puts forward ameasuring method of using microwave furnace to dry earth and using 0.1g quantity sensitive medical try-type balance for weighing through contrast test.Under the premise of ensuring precision,it can raise effi-ciency about so times comparing with the conventional method.To counter the low vertical resolving powerof neuton water analyser,it puts forward to measure field soil moisture by using γ transmission method.Itis shown by the test result that the measuring error of using this method usually is smaller than 2%.
出处
《人民黄河》
CAS
北大核心
1993年第11期25-27,共3页
Yellow River
关键词
土壤含水量
烘干法
Γ透射法
soil moisture,stoving method,nenton water analyser.γ transmission method
