【摘要】 土壤水稳定性大团粒是一个重要的土壤物理性质指标。土壤水稳定性大团粒分析常用的仪器为Yoder团粒分析仪。根据Yoder团粒分析仪的原理,并参照国内生产的水稳定性大团粒分析仪和荷兰的Eijkelkamp公司生产的Eijkelkamp08.13水稳定性大团粒分析仪,设计了一款实用新型的土壤水稳定性团粒分析仪。进行了改进:(1)采用了变速电机,无噪音,并可调节振动频率;(2)采用定时设置;(3)每套筛子由6个不锈钢筛组成,筛架固定在仪器下方,增加了仪器的稳定性,降低了仪器整体的重量和体积。更多还原

【Abstract】 The content of water-stable aggregates is an important soil physical parameter.And,the wet-sieve method is in common use.Based on the Yoder’s theory,a new type instrument of wet-sieve method was manufactured.There are several characteristics of this type instrument:(1) there are 6 sieves of different hole size,so,the disturbance of different size aggregates can be avoided,primly;(2) the sieve-holder is under the instrument,so,the stability of the instrument is advanced;(3) the frequency of sieve lift and fall can be adjusted;(4) run time can be set.更多还原