yam grows extensively, and it can be used as both medicine and vegetable, so people like to plant it. However, in production, the output of Huaishan is prone to fluctuation, often fluctuating, giving people an impression that it is difficult to grasp. In fact, as long as you master the scientific planting methods of Huaishan Mountain, you can still keep the output stable.

1. Selecting land and preparing soil

Huaishan Mountain requires warm, humid and sunny environmental conditions, and develops well in deep, fertile, relaxed and well-drained sandy soil. A few days before planting, every 667 square meters (? Mu) First, apply 5 kg of manure, plant ash, compost and other mixed fertilizers as base fertilizer. After fertilization, plow and rake once, and lift the border with a height of 25~3 cm and a width of 6~7 cm.

second, planting

plant the seeds after the vernal equinox, open a ditch with a depth of 6-1 cm in the border, and plant them in two rows. The row spacing is 25~3 cm and the spacing between plants is about 2 cm. Put the cultivated rhizome or tuber flat in the ditch, and then cover it with soil.

Third, field management

1. Mowing and weeding: After planting in Huaishan Mountain, several seedlings can often grow from each stem. If there are too many seedlings, the plants are thin. Therefore, when the seedling length is about 3 cm, it is necessary to properly remove some seedlings and branches on the seedlings, leaving only 1-2 robust seedlings to ensure the robust growth of the plants. In addition, the growth period of Huaishan Mountain is about five months in the high temperature and rainy season, and the soil is easy to harden and weeds grow fast. Therefore, it is necessary to strengthen intertillage weeding to ensure the effective supply of fertilizer.

2. Topdressing: Dioscorea opposita is a kind of fine fertilizer. Besides adequate base fertilizer, topdressing should be carried out for many times to meet its needs for nutrients. Combined with weeding for the first time, 5 kilograms of thin human excrement and urine were topdressing every 667 square meters. The second and third times were applied in June and July, respectively. Every 667 square meters, 15 kilograms of human excrement or 5 kilograms of urea were applied to the water each time to promote the lush growth of plants. For the fourth time, in the first ten days of August, 667 square meters were mixed with 1 kilograms of stable manure and 5 kilograms of peanut bran and cultivated. So as to promote underground rhizome growth and increase yield.

3. Hedgehog topping: Huaishan is a kind of twining herb. After the seedlings grow to 2 cm, small strips can be inserted into the border to form a fence for the seedlings to grow up, so as to facilitate ventilation between plants, enhance photosynthesis and promote rhizome growth. When the vines of Huaishan Mountain grow to the top of the fence, the top buds are removed to promote some side buds to grow into branches and increase the photosynthetic area, which is beneficial to the manufacture and accumulation of nutrients.

4. Irrigation: it is unnecessary to irrigate most of the time during the growing period of Huaishan Mountain, but in case of dry weather and low soil water content, it is necessary to irrigate appropriately. Trench irrigation should be used in irrigation, so that water can seep into the border soil, and no water can accumulate.

fourth, pest control

There are not many pests in Huaishan, mainly diseases, such as anthracnose and brown spot. Prevention should be given priority to and prevention should be combined. The seeds can be soaked in 5% tobrazine 15 times solution for 3-5 minutes for disinfection and prevention, or sprayed with 1: 1: 15 Bordeaux solution every 1-15 days and continuously for 2-3 times after emergence. After the onset, the diseased leaves should be removed and burned in time, and sprayed with 65% zineb 5 times solution or 5% Tobezin 1-15 times solution once every 7 days for 2-3 times continuously.