四川的小麦/玉米/甘薯三熟制,在大面积生产上已推广多年,种植面积已突破1500万亩。为了将有的早三熟制从用多养少型改变为用养结合型,我们特设计了以玉米为中心,前茬配置蚕豆替换小麦,后茬配置花生替换甘薯的新旱三熟组合,并实行组合轮换种植试验研究,以达到持续稳产高产的目的。 Sichuan wheat / corn / sweet potato three cooked, large-scale production has been promoted for many years, planting area has exceeded 15 million mu. In order to change some early-maturing systems from using more and keeping less ones to combining with keeping ones, we specially designed the new drought and trimming combination with corn as the center, the arrangement of faba beans in the former crop as the replacement of wheat and the replacement of the sweet potato by the latter, And the implementation of a combination of rotation cultivation experiment in order to achieve sustained, stable and high yield purposes.