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“烟叶-玉米-水稻三熟制玉米栽培技术,即在春烟将收成时间作套种一季玉米,玉米收后种杂交水稻。在原先“烟稻制”基础上每亩增收200多公斤玉米。稻、烟产量、质量比“两熟制”略有提高。1987年首先在烤烟主产区文亨乡试验210亩,获得亩产烟叶110公斤、稻谷480多公斤、玉米218公斤的好收成。同样一块田亩产值增加305元多收入,1988年在七个乡推广1256亩,1989年推广2550亩。主要技术是:一、选地 选能灌易排、阳光充足、集中连片的梯田、河谷地、高丘排田作春烟地。冬季排干水,春前翻土整地,畦高25～30厘米、宽80～100厘米,畦沟宽20厘米。按正常要求种上春烟。
“Tobacco - corn - rice three cooked maize cultivation techniques, that is, the harvest time in spring smoke for intercropping a season of corn, maize after-harvest hybrid rice on the basis of the original” tobacco system “on the basis of more than 200 kilograms of corn per mu. , The yield and quality of tobacco slightly increased than that of ”two-crop system." In 1987, 210 mu of grass was cultivated in Wenheng Township, the main producing area of flue-cured tobacco, obtaining a good yield of 110 kg per mu, more than 480 kg of rice and 218 kg of corn. The output value of a plot of land increased by more than 305 yuan, 1256 mu in seven townships in 1988 and 2,550 mu in 1989. The main technologies are as follows: 1. Selected land for irrigation and drainage with sufficient sunshine and concentrated contiguous fields and valleys , Takaoka rows of fields for the spring of tobacco .Water drained in winter, spring soil preparation, high 25 to 30 cm, 80 to 100 cm wide, mound ditch width of 20 cm. According to the normal requirements of spring flowers.