开垦利用盐碱荒地,通常采用修建大规模的排水系统,灌淡水冲洗及灌深水压盐等方法,这种方法虽行之有效,但要消耗大量的能源和淡水资源,而且投资大。为了探索一种用水省,洗盐快,当年又有较高收益的方法,1982年起利用东风50拖拉机牵引ILSA～80/120型松土暗沟犁进行了滨海盐土暗洞快速洗盐技术的研究,每年3月中旬开暗洞,洞距3米,距地面深度40～50厘米,洞直径10厘米,洞长300～400米。三年来共打暗洞260亩次,其中,打洞一次使用三年的 Land reclamation and utilization of saline and alkali wasteland, usually by means of constructing large-scale drainage systems, irrigation with fresh water and irrigation of deep-pressured salt, are effective but consume a large amount of energy and freshwater resources and have large investment. In order to explore a water saving, salt washing fast, then there is a higher yield method, 1982, the use of Dongfeng 50 Tractor ILSA ~ 80/120 trenching plow furrow saline saline fast dark salt hole technology research , Every year in mid-March open dark hole, hole 3 meters, 40 to 50 centimeters depth from the ground, hole diameter 10 cm, hole length 300 ~ 400 meters. In the past three years, a total of 260 acres of dark holes were played, of which holes were used for three years