Secondly, they devised the narrow-strip, three-field farming system which continued to the 18th century.其次，他们设计的窄条三圃田农耕制延用至18世纪。
This paper researches on the three-dimensional planting mode of winter wheat,maize and soya beans,advances a series of f研究了冬小麦间作玉米复播大豆立体种植模式,提出了一套适合山西省晋中地区的农作制度与种植模式,以达到增产增收和高效用水的目的。