Digging ditches at the boundary according to the ditch spacing of 20-24 cm; The ditch depth is 5-7 cm, the sowing width is 6 cm, and the plant spacing is 2-3 cm. Per mu yield10-12kg seeds. Seedling 1000m2 can be planted1000m2.
After sowing, cover with compost or plant ash, cover with fine soil horizontally and at the boundary, and cover with straw for moisture retention. The temperature is 17-20℃ and there is enough humidity, and seedlings emerge 18-20 days after sowing. Remove the straw after germination.
When the seedlings are unearthed, it is necessary to build a shed for shade, or use crops such as corn to shade in the border to keep the soil moist. When the seedling height is about 3 cm, pull up weeds and fertilize. In autumn, soil loosening is combined with fertilization, and the fertilizer is mainly human and animal manure. Each application per mu 1000- 1500 kg.
2, timely planting.
After a year, you can sow. Generally, before the germination of 10 in June or at the end of spring, when the seedling is 10- 12 cm high, it will be planted with soil. When raising seedlings, plant them separately according to their size. According to the row spacing of 50 cm and the plant spacing of 24 cm. First plant two rows of asparagus with a spacing of 50 cm, and then plant two rows of asparagus. When planting, put the roots evenly in all directions and cover them with fine soil for compaction. In the reserved row, corn or broad beans can be intercropped every year.
3. On-site management.
(1) intertillage weeding
Weed and loosen the soil for 4-5 times during the growth period, and do not loosen the soil too deeply each time to avoid hurting the root tuber.
(2) Scaffolding
When the vines grow to about 50 cm, it is necessary to set up supports or columns to make the vines twine and grow, which is convenient for stem and leaf growth and field management.
(3) Topdressing
Before thawing and germination every year, apply 2500-3000 kilograms of manure per mu, and row the soil with four teeth to mix the manure evenly. In late June or early July, apply diluted manure water 1 times or compound fertilizer 10 kg per mu of ditch, and then cover the soil and water it.
4. Pest control.
Mainly red spider, which harms the leaves from May to June.
Pay attention to clearing the garden in winter and dig up or burn the dead leaves. Spraying 0.2-0.3 Baume sulfur mixture or spraying 500 500- 1000 times of 25% chlordimeform aqueous solution, once a week 1 time, 2-3 times in a row.