一种用于田间和野外采集土壤样品的新型工具—空腹螺杆取土钻在中国科学院石家庄农业现代化研究所研制成功并投入小批量生产,由于它具有操作轻便省力、取土效率高、土样不易混杂和携带方便等优点,受到广大农、林、水利工作者的普遍欢迎。目前,该项发明已申请专利,并由国家专利局初审合格和发布了公告。该种空腹螺杆取土钻(见图)由空腹螺杆钻头1,钻杆2和操纵手柄8组成。空腹螺杆钻头1的结构形式有两种,一种为整体式,钻头的一侧设有纵向开口(附图a);一种为组装式,钻头由两个半圆体组成,两半圆体由带有螺纹的头、尾部套箍固定,头部套箍5的前端有切削利刃,尾部套箍4与钻杆连接(附图b)。两种结构形式的空腹螺杆钻头,外缘均 A new tool for soil sample collection in the field and in the field - fasting screw soil boring drilling was successfully developed and put into small batch production at Shijiazhuang Institute of Agricultural Modernization, Chinese Academy of Sciences. Due to its light and labor-saving operation, high soil-taking efficiency and difficult soil samples Mixed and easy to carry and so on, by the majority of farmers, forestry, water conservancy workers generally welcomed. At present, the invention has applied for a patent, and passed the preliminary examination of the State Patent Office and issued a public notice. The fasting screw earthmoving drill (see Figure) from the fasting screw bit 1, drill pipe 2 and joystick 8 composition. There are two kinds of structures of the fast-acting screwdriver bit 1, one is a monolithic type, and one side of the bit is provided with a longitudinal opening (figure a); one is an assembly type and the drill bit consists of two semicircles, Threaded head, the tail cuff fixed, the head cuff 5 cutting edge cutting edge, the tail cuff 4 connected with the drill pipe (Figure b). Two structural forms of fasting screw bits, the outer edge are