系列设计组于1973年在商丘集中完成了主要机型的设计后,到1974年9月,共完成了十一种机型的设计和二十六台样机的试制工作。除1L—530悬挂五铧犁因试制厂不落实而未试制,其余机型均完成了试制计划。完成试制的样机的机型和台数为:悬挂中型二铧犁1L—230(包括1L—330P)六台,悬挂中型三铧犁1L—330二台,悬挂中型四铧犁1L—430三台,悬挂 After designing the main models centrally in Shangqiu in 1973, the series design team completed the design of eleven models and prototyped 26 prototypes by September 1974. Except for the 1L-530 suspension five-plow plow, which was not trial-produced due to the trial production plant, the other models completed the trial production plan. The models and the number of prototypes to be completed are as follows: six medium-sized two-plow 1L-230 (including 1L-330P), three medium-sized plow 1L-330 and three medium- suspension