近年来,我省部分县结合土壤普查进行了微量元素含量分布的调查,对微肥推广起了良好作用,但也存在一些问题。有的县正准备进行,本文仅就土壤分析方面谈几个问题。一、关于土样的采集与处理微量元素在土壤中含量甚微,对作物的缺乏、适量与致毒水平范围很窄。因此,要求样品具有更高的代表性和典型性。一个中等县应采耕层样品200个,骨干剖面20—30个。处理土样不能用金属的板、棍、筛和橡皮的塞子、垫布等,以免污染。应该用塑料或木制板、棍、玛瑙研钵、尼龙网筛。如样品送有关单位 In recent years, some counties in our province conducted a survey on the distribution of trace elements in the soil census, which played a good role in promoting the application of micro-fertilizers, but there are also some problems. Some counties are preparing to proceed with a few questions on soil analysis. First, the collection and processing of soil samples Trace elements in the soil content is minimal, the lack of crops, the amount and level of toxicity is very narrow. Therefore, the sample is required to be more representative and typical. A medium-level counties should be plowed 200 samples, 20-30 backbone profile. Treatment of soil samples can not be used metal plate, stick, sieve and rubber stopper, padding, etc., so as to avoid pollution. Should use plastic or wooden board, stick, agate mortar, nylon mesh screen. Such as samples sent to the relevant units