农业耕作制度的发展是伴随农业生产水平、生态条件和生产方式的变化而演进的。我区近年出现的一些耕作制,如春莲藕、杂交晚稻连作制(以下简称藕杂制),就是在产业结构调整中创立的一种新型的耕作制。经我们1984—1985两年在本区左横、网市两村定点示范和考察,结果表明,其社会效益、经济益效和生态效益都比单季莲藕或单种粮食作物优越。 The development of agricultural farming system is accompanied by changes in agricultural production levels, ecological conditions and modes of production evolved. Some farming systems that emerged in recent years in our region, such as Chunlianou and the hybrid late rice continuous cropping system (hereinafter referred to as the “lotus root system”), are a new type of farming system established in the industrial restructuring. After our 1984-1985 two years in this area Zuo Heng, net two cities and villages designated demonstration and investigation, the results show that its social benefits, economic benefits and ecological benefits than single lotus root or single grain crops superiority.