In recent years, with the increase in export volume and the improvement of the living standards of the urban and rural people, the demand for Shantou has been increasing, and its cultivation area has increased year by year. The following describes this technology as follows: First, choose a variety of products, many children, Sun Xiao Shao, a large, high yield, good marketability, "Lu Yi 1", "Lai Wei 2". Eliminating the local varieties that have been preserved, low yield and poor marketability. 2. Clean up the pits. Dig a shaft in a place where the groundwater level is low. In principle, the deeper the better, because the deeper the place, the smaller the change in temperature and humidity will be beneficial to the storage of steamed bread. Most of the peasants dig a vertical shaft about 5m in height, and then dig a two-to-many-two-meter-high branch hole on each side. The length of the branch hole depends on the amount of hoe storage. Or clean up the wells that stored ginger, taro, or sweet potato last year, remove the old soil with a pestle, and disinfect the surface with quicklime. Third, the mother-fighting mother-family is best to enter the pit with the son-family or the grandmother. This will not only benefit the mother-female overwintering, but also allow the child-family and the grand-mother to add value during storage. It is also possible to place the mother-in-law with the child's cockroach in the field one afternoon in the sun to promote wound healing without causing dehydration and wilting of the mother-in-law. The petiole on the female tends to retain 2c. Place 40-50 cm thick in the cellar. After entering the pit, the wellhead can be left open for 10 to 20 days to dissipate the heat generated by the female's larvae. After the weather turned cold, it gradually sealed the pit. IV. Cellaring and slitting In early March, the mother-in-law was picked up in a sunny, windless weather, and a leeward sunny place was selected. The dried leaf sheath was peeled off, cut with a knife, and the general mother's beak was cut into two pieces. Especially large females are cut into 4 pieces, keeping the mass of each piece no less than 40g. The method is to cut longitudinally along the female bud, and then coat the plant ash, which can effectively prevent the bad seeds and pre-emergence drying for 2 to 3 days. V. Germination Select a leeward sunny plot or a sunny place in front of the house to establish a seedbed. The seedbed can be laid on the ground or built on fire. Conditionable plastic or plastic paper drums (8 cm8 cm or 10 cm10 cm) can be used to raise seedlings, or the mother beetles can be discharged directly on the seedbed so that the eyes can be slanted downwards at an angle of 45 degrees, then covered with sand, and the appropriate amount of water can be poured. . The three-layer film is covered, or the two-layer film is covered with straw curtain insulation in the evening, so that the seedbed is kept at 22-25°C during the day and 18°C ​​or more at night. 6. Planting in Daejeon In early April, 3 to 4m3 of chicken manure was used as basal fertilizer for every 667m2, then ridges were made and ridges were planted at a distance of 65cm and 1 row per ridge. Planting the female locusts on the seedbed first, and using the nutritional pod nursery, can properly delay the planting to extend the growth time of the female pupa under good conditions. Soil transplanting, plant spacing 25 ~ 28cm, 3500 ~ 4,000 planted per 667m2, planted cover with plastic film. If there is a leaf, the leaves should be broken through the membrane, and the membrane should be sealed with soil to prevent loss of water. VII. Field Management Because the growth of Shantou was too slow in the early stage and the basal fertilizer was sufficient, no fertilizer was required in the early stage. When 7 to 8 true leaves were planted, the underground bulb began to expand, and 25 to 30 kg of potassium sulfate was applied per 667 m2. During the expansion of bulbs, more water is needed and the fields should be kept moist. Covering with mulch can not only save the work of field cultivation, but also produce high yields. 8. Harvested the steamed bun harvest Before the Mid-Autumn Festival, the price is good and the benefit is high. Practice has shown that before the Mid-Autumn Festival, the taro was harvested when the tops of the taro and sunworm did not completely darken. The yield did not decrease, but the starch content was low and the taste was slightly poor, but it did not affect the consumption. The taro can also be postponed until the outer leaves shrink and harvest. At this time, the harvest quality is excellent and can be stored. After harvest, the mother and her daughters can enter the pit together with the soil. Do not allow the child to fall off when entering the pit. The fallen child is not suitable for storage.
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