在夏耕中,我站3天内犁体断裂了3个、犁柱断裂了2个。这不仅增加了作业成本,又耽误了农时。经观察分析认为,此犁都是用灰口铸铁制造的,灰口铸铁强度低、韧性差,深耕犁受的阻力又大,因灰口铸铁承受不了大的阻力而断裂。建议 In summer plowing, I plow body break 3 3 days, plow rupture 2. This not only increased operating costs, but also delayed agricultural time. After the observation and analysis, the plow is made of gray cast iron. The gray cast iron has low strength and poor toughness. The resistance of the deep plow is so great that the gray cast iron can not withstand the large resistance and breaks. Suggest