(1) The site selection and soil preparation site has loose texture, good air permeability, deep and fertile soil, high organic matter content, and neutrality, and it often maintains a gentle slope with no accumulation of water. The site preparation requires deep plowing before winter, and about 5000 kg of organic fertilizer per acre. After deep-turning in the spring, the konjak roots require strict oxygen. In places where the soil moisture is heavy, the sorghum narrow-boxes should be used and the drought-prone areas should be used. (2) Seed selection and disinfection The buds with small buds, flat mouths, thick top buds, smooth surfaces, no disease, no injury, and 500 g or less were selected. Seed disinfection. The general method is: 1 agricultural streptomycin 600 ~ 700 times soaking species for 1 hour, 24% formalin 1:200 ~ 250 times liquid soak 20 ~ 30 minutes. A 31% copper sulfate aqueous solution was soaked for 5 minutes. After the chemicals were soaked and sterilized, the seed pods were removed and placed in a flat place to dry and then sown. (c) 15 to 20 days before germination sowing (about the middle of March), after the buds have been sterilized, they are placed under conditions of 15°C to 25°C and 75% relative humidity, covered with greenhouses, hotbeds, cooling beds, and membranes. In other ways germination. Germination should pay attention to moderation, time can not be too long, the general growth of the top bud 1 cm on the line. (D) Cultivation time and method There are two types of winter and spring cultivars in konjac producing areas. The so-called winter cultivars are the types of konjac harvested from November to December. Mild, slightly frost-bearing, low snow and ice low mountain areas. The so-called spring planting occurs when the temperature rises to 15°C around the time of the Qingming period. The spring plantings are more appropriate and can be generally adopted. Konjac bulb sizes vary, depending on the size of the cultivation distance. In general, 4× and 6× of the diameter are the spacings of the cultivated plants. In order to effectively shave and create a semi-shaded environment, the method of intercropping with corn is widely used in production, and the effect of preventing disease and increasing yield is very obvious. (v) Field management In addition to fertilization, coverage is another important aspect of konjac cultivation, with no emphasis on cultivating and weeding. The roots of the konjac are shallow, and the roots on the bulbs are transverse and very tender and brittle. When people work in the ground, they can easily cause damage to the root system. There are two ways to deal with weeds. One is to apply the herbicide before seeding and the other is to manually remove. Avoid weeding with agricultural implements. The role of coverage is to prevent or reduce soil compaction, resist drought, reduce ground temperature rise and disease occurrence. There are many kinds of covering materials, such as fir leaf and wild hay, wheat straw, cereal straw and deciduous leaf.
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