The invention discloses a konjac cultivating method. A.muelleri in the Sino-Burmese border area as a female parent and a konjac
germplasm A.macrorhizus as a male parent are subjected to intrageneric artificial cross, and seed collecting, close planting and
sowing, cultivation and seedball harvesting are performed; a
plant is selected from F1 generation, wherein the
plant has dark
green leaf color, grows robustly, has stems being green stems and having greenish brown stripes, has tender white terminal buds, has white flower type and flower color having uniform light purple spots, has the spathe like
calla and shorter than appendant organs, has light yellow-to-white tuber
flesh color, and has an atmogenic
corm growth pattern comprising that single plants are grown on stems, petiole crotches and main veins and then are subjected to
pollination, seed collecting,
sowing and screening; then an individual is selected from F2 generation and is used as a new variety, wherein the individual has stems being green stems and having greenish brown stripes, has tender white terminal
bud, has white flower type and flower color having uniform light purple spots, has the spathe like
calla and shorter than appendant organs, has no
pollen produced after flowering, has light yellow-to-white tuber
flesh color, has atmogenic corms which can be grown on stems, petiole crotches and main veins, has KGM content more than 70%, and has 39 pairs of chromosomes.