1, Rhizome propagation: a method of propagating seeds with rhizomes (several kinds of stems, such as roots growing on the top of bulbs). The advantage of this method is that regardless of the age of the seedlings, it overcomes the size of the traditional sowing method, resulting in poor and poor species, increasing diseases year by year, and difficult to maintain the yield. The technical points are: (1) While mastering commodity production, it has achieved the effect of "fast, fast and better". (2) It is a two-year cycle. Rhizomes are used as propagation materials. When harvesting, about150g of konjac is used as konjac seed. (3) After spring, planting shallow ditches in the field, with the row spacing of 0.3* 1.2.

2. Propagation of small konjac seeds: Small konjac is mainly propagated by farmers themselves, and the weight is 250g. The technical point of the law is: (1) establish a special konjac seed field, and the area of the seed field is preferably one-fifth of that of the field (that is, a field of 5 mu needs a seed field of 1μ). (2) Choose a good field without (less) pathogens to reduce the pollution of konjac in the soil. (3) When the konjac is harvested and the plot is renovated, the konjac below 50g is collected. (4) When sowing, the shallow ditch is opened, and the plant spacing is 0.5* 1.5.

3. Propagation of terminal bud: The technical point of terminal bud propagation is that (1) will leave about10g of terminal bud and surrounding parts during propagation. (2) sow the sun in the sun and then sow. (3) When planting, be careful not to damage the terminal buds. After the terminal bud is alive, it can be sold as commercial konjac.

4. Ear propagation: Ear propagation is a relatively advanced propagation method, which can produce a large number of seeds quickly. When Amorphophallus konjac grows for three years, the vegetative growth is completed, and then it enters the reproductive growth stage. The technical points of ear propagation are as follows: (1) The vegetative growth stage of Amorphophallus konjac is determined. That is, the konjac buds grow to about 10 cm. (2) Amorphophallus konjac seeds turn red and can be harvested. (3) Sowing is carried out through lower nurseries.

5. Natural propagation of Amorphophallus konjac seeds: the natural propagation coefficient is 0, which is too low, the demand for Amorphophallus konjac seeds is too large, and the promotion speed of Amorphophallus konjac seeds is too slow to meet the production needs. It takes a long time to propagate varieties naturally. The famous varieties in Japan, such as Heiming, Chicheng Daewoo and Miaoyifeng, have an average age of over 15 years. At present, there are no real hybrid breeding varieties in China. The input cost of konjac seeds is too high, generally exceeding 1000 yuan per mu. Three kinds, Amorphophallus konjac seed disease can cause serious diseases, increase the planting risk caused by tenant farmers, and thus seriously dampen the enthusiasm of farmers.