In order to achieve high yield of konjac, we must first understand the characteristics of konjac, whether it is suitable for local planting, master the correct planting techniques, do a good job in field management, control pests and diseases, harvest it in time, and ensure the quality and yield. Let's learn about the cultivation techniques of konjac together.

First, the sowing time

Note that before planting konjac, 2-25g of large seed taro should be dried in the air for 2-3 days. The sun disinfection in this way can enhance the germination potential and improve the germination rate. In general, the method of planting in spring is adopted, and the planting time of konjac can also be decided according to the climatic conditions in different places. Planting before and after Tomb-Sweeping Day is the most suitable, and sowing as early as possible to improve the yield. In the southern region, winter sowing can be carried out in winter fallow land, and it is suggested to sow in the first half of November. After sowing, the thickness of covering soil should be appropriately increased.

Second, the planting density

It is suggested that the planting distance of taro is 2-25g with 4 ″? 5㎝ is the most suitable. If large taro is used, the yield of each plant can reach about 2 kg in that year, so when planting commercial konjac, it is necessary to choose taro between 2 and 5 grams. Before planting, ditch or hole should be dug according to the above-mentioned density, and the width and depth should be about 25 cm. Soil and miscellaneous fertilizer must be applied under the hole, and a taro with the main bud upward should be placed in the hole according to the density requirement, and then covered with decomposed manure. At the same time, pay attention to covering 1 cm of soil on the earth embankment beside the ditch, so that high ridge planting can be achieved.

third, konjac fertilization management

konjac is a fast-growing and high-yield crop, which needs a lot of fertilizer, and potassium fertilizer is the most needed, followed by nitrogen fertilizer and phosphorus fertilizer is the least. Under normal circumstances, one-year-old taro needs 12 ~ 165 kg of pure nitrogen, 75 ~ 15 kg of phosphorus and 15 ~ 18 kg of potassium per 1 kg. If it is 2 ~ 3 years old, the amount can be appropriately increased by 1/3 ~ 2/3. The fertilization amount of commercial konjac field can be increased to 2/3. Pay attention to the fact that farmyard manure must be the main fertilizer, and the application amount of base fertilizer can account for more than 7% ~ 8% of the total fertilization amount. Resolutely prohibit the application of some alkaline fertilizers such as plant ash and cinder that have not been acidified by composting.

Fourth, intertillage weeding of Amorphophallus konjac

After the Amorphophallus konjac seedlings are in full bloom in June, it is necessary to hoe the soil shallowly and remove weeds for 3-4 times. The soil should always be in a loose and moist state, and July-September is the fast-growing period of bulbs. If the weather is dry, it is necessary to water it for 5-6 times. When the rain is normal, you can choose not to water it, and pay attention to flexibility. After entering October, when the temperature drops and the growth of weeds is not very large, there is no need to weed and loosen the soil.

V. Harvesting of Amorphophallus konjac

Pay attention to the harvesting time: the whole growth period of Amorphophallus konjac is about 2 days, and it can be harvested when the underground quietness stops growing. Note that the northern region must be excavated from late October to early November when the plants begin to wither. If you dig too early, the water content is too high for storage, and the quality is too poor for planting. If you dig too late, you are afraid that the bulbs will suffer from frost. When the temperature drop in winter in the southern region is relatively small, it can be excavated at one time. Note that it can be excavated as needed and can last until March of the following year.

Digging method: Pay attention to picking up all the taro leaves when digging, choose sunny days to dig deep with hoes from the side 15 cm away from the plant, dig out carefully from nest to nest, and try to keep the bulbs intact. After digging out, carefully break off the taro whip, remove the soil, classify according to the size, remove the damaged ones, dry them in the sun for 2 ~ 3 days, and collect the complete tubers for seed or sale after the water content has lost more than 1% ~ 15%. The tuber used for seed should be 1 ~ 25g, with smooth and round skin, light yellow color, no shrinkage and stout terminal bud.

in a word, planting konjac should be scientific, and corresponding work should be done according to its habits, growth characteristics, environmental requirements, water and fertilizer requirements, etc., so as to help it grow, which is conducive to plant growth and guarantee high harvest and high yield.