Yam bean has sprouted. How to plant it?

After the yam cultivation ditch was filled with fertilizer, the ditch was made into a flat bed with a width of about 1 m. When planting, open a planting ditch with a depth of about 10 cm in the middle of the flat border, and then water it. When water permeates, plant yam seeds in a single row in the ditch according to the plant spacing of1.5 ~ 20cm, and plant about-4,000 plants per mu. Cover the soil with 8 ~ 10 cm, and then cover it with plastic film to keep moisture and increase temperature and promote seedling emergence. If yam bean is used to propagate Chinese yam seeds, two rows can be planted in one bed to improve the propagation coefficient. The row spacing is 40-50 cm, and the plant spacing is about 10 cm. Plant about 12000 plants per mu.

Post-planting management

The stems and leaves of Chinese yam like high temperature and dry environment, and are not resistant to frost. The average daily temperature of root tuber began to germinate above 65438 00℃, and the suitable temperature for germination was about 25℃. The optimum temperature for stem and leaf growth is 25℃-28℃, and the fastest temperature for tuber expansion is 20℃-24℃. Yam can not emerge until 35 days after planting.

1. Vertical vine: The stems on the ground of yam are tender, so the vines should be supported in time after emergence. According to the right-handed characteristics of yam stems, the tendrils spiral upward, and the height of the frame is about 1 m. If there are too many lateral branches at the base of the main vine, they can also be removed appropriately to facilitate ventilation and light transmission. When a large number of "yam bean" are formed in the axils of leaves, a part can be removed as soon as possible to save nutrition.

2. Tillage and soil cultivation: In the early stage of growth, intertillage weeding is adopted in Qin Ying, generally half a month 1 time, until the stems and vines grow to half a shelf, and then weeds are pulled out. It is necessary to dig out part of the soil between the rows outside the frame and fill it in the rows inside the frame, so that high ridges are formed inside the frame, and furrows with a depth of 20 cm and a width of 30 cm are formed between the rows outside the frame, which is convenient for drainage in rainy season.

3. Timely chemical control: Paclobutrazol can obviously inhibit the growth of aerial parts of Chinese yam, and can inhibit the occurrence of laiji, so that the yield of Chinese yam can be increased by more than 10%. The best time to spray paclobutrazol is when the vines of yam are full. When the bud first blooms, 60-70g of 15% paclobutrazol wettable powder per mu is mixed with 50kg of water and sprayed evenly. Weedy fields can be sprayed twice every 7- 10 days.

4. Rational topdressing: topdressing L times when the stems and vines are on the first half of the frame, and topdressing 25-35 kilograms of high-concentration compound fertilizer per mu. Or 20 ~ 30 cm away from the plant, furrowing and applying 500 ~ 1000 kg of decomposed organic fertilizer. Water after fertilization. In the future, when the stems and vines are full, if there is a phenomenon of yellow thinning, urea 10kg/ mu can be topdressing. Combined with disease prevention and insect prevention in the late growth stage, spraying 0.3% potassium dihydrogen phosphate solution outside the roots for 2-3 times to protect the leaves and prevent aging. ?

5. Combination of irrigation and drainage: Yam is a drought-tolerant crop, but it should be watered properly if it is to achieve high yield. Generally, before and after 1 topdressing, if the soil turns white after a long drought, it should be lightly watered 1-2 times until the soil surface is wet. At the turn of summer and autumn, if the dry and hot weather lasts for more than 1 week, cold water should be poured in the morning to fight drought. Yam is more afraid of waterlogging, so it is necessary to clear the ditch and drain in time in rainy season to ensure that there is no water in the field.

References:

Cultivation techniques of yam-Baidu Encyclopedia