我们搞土壤研究工作,总离不开采集土壤样品,特别是作土壤物理研究项目,不但需要一般土壤样品,更要求采取一定容积、不破坏土壤结构、使土壤保持原状的土壤样品.过去,我们有一些土钻,如麻花钻,所采土壤样品,结构被完全破坏,且土质相混,只能勉强作为观察土壤的辅助工具,或作土壤水分的采样工具;再有一种筒钻,所取土壤,结构仍受一定破坏. We are always engaged in soil research and soil samples can not be harvested, especially for soil physics research project, not only the need for general soil samples, but also to take a certain volume without destroying the soil structure, so that the soil intact soil samples.In the past, we There are some earth drills, such as twist drills, soil samples taken, the structure is completely destroyed, and the soil mixed, only barely as an auxiliary tool to observe the soil, or as a soil moisture sampling tool; Soil, structure is still subject to some damage.