遵照毛主席“把土地深翻好”的伟大教导,近年来,各地开展了群众性的深翻改土运动,提高了粮、棉产量。为了充分蓄水抗旱、发挥土地潜力,由目前一般机耕深度6—7寸,加深到一尺以上,可进一步发挥深耕效果。深耕一尺以上,容易把大量生土翻上来,如施肥跟不上,易导致当年减产。要求加深耕层,又能保留熟土,就显得特别重要。在农机具方面研制一种深耕一尺以上,阻力小,且保留熟土较好的新型深耕犁,是目前极待解决的问题。最近,洛川县农机局,洛川县农机厂和延安地区农业机械研究所,共同改装试制了深耕空心漏土犁和滚子犁,经过试验鉴定,具有耕层加深,保留熟土性能较好,阻力较小等优点,较好的地解决了以上问题,现简要介绍如下: Following Chairman Mao’s great teaching of “turning the land deep into a good one”, in recent years various mass activities have been carried out to deepen the reform and increase the soil and increase grain and cotton output. In order to fully water and drought, to play the land potential, from the current general depth of 6-7 inches of plowing, deepening more than one foot, can further play deep plowing effect. Deep plowing more than a foot, easy to turn a lot of raw soil up, such as fertilizer can not keep up, easily lead to the current cut. Asking for deepening the tillage and retaining potatoes is of special importance. In the aspect of developing agricultural implements, a new type of deep-plow that plows more than one foot deep and has low resistance and better retention of mature soil is a problem to be solved. Recently, Luochuan County Agricultural Machinery Bureau, Luochuan County Agricultural Machinery Factory and Yan’an Agricultural Machinery Research Institute, co-modified trial production of deep plow hollow plow and roller plow, after the test identified with the deepening of the tillage, retention of mature soil better performance , Less resistance and other advantages, a better solution to the above problems are summarized as follows: