云南滇中一带的传统耕作制是一年两熟,大小春各一季。由于滇中冬无严寒,小春作物没有停止生长的现象。大小春作物之间约有一个多月的休闲期,若要在这30～40天增加一熟作物,采用传统的栽培方法和无灌溉条件是不可能的。随着科技的发展和水利化程度的提高,实践证明,现在滇中不仅能一年三熟(大小春和秋作),还能三熟都获高产,因此,滇中粮食生产有着巨大的增产潜力。 The traditional farming system along the Yunnan-Yunnan part of the country is two crops a year, one spring and one spring. As the winter in central Yunnan is not cold, small spring crops did not stop growing phenomenon. Between the size of the spring crop about a month of leisure time, in this 30 to 40 days to increase a crop, the use of traditional cultivation methods and no irrigation conditions is not possible. With the development of science and technology and the improvement of water conservancy, it has been proved that now that Yunnan can produce not only three crops a year (spring and autumn and spring and autumn) but also three crops, the grain production in Yunnan has a huge yield increase potential.