High-yielding cultivation techniques for garlic seedlings: Choose sandy loam soil that is close to water sources and rich in organic matter. Avoid continuous cropping and repeat cropping with onions and garlic. After the previous crop is harvested, plow and dry the land promptly, then harrow and level the soil, and treat the soil with 50% phoxim emulsion. Apply 4,000 to 5,000 kilograms of high-quality manure, 30 to 50 kilograms of urea or 100 kilograms of nitrogen, phosphorus and potassium compound fertilizer per acre. Finally, a flat border of 1 to 1.5 meters wide is made.

Choose disease-free and injury-free garlic cloves and classify them into three grades: large, medium and small. Remove the old stem plate at the bottom of the cloves. Soak the garlic seeds in clean water for 12 to 24 hours the day before sowing to induce germination before sowing.

Sowing can be carried out from the end of August to early September. When sowing, the soil should be kept loose and moist, and used for shade and cooling such as wheat straw. When planting, sow seeds in furrows with a spacing of 3 to 3.5 cm x 3 to 3.5 cm between rows, and cover with 3 cm of soil after sowing.

Before emergence, when the bottom moisture is sufficient, do not water before emergence to avoid soil compaction. When the bottom moisture is insufficient, water it lightly and then loosen the soil.

After all the seedlings have emerged, do shallow cultivating once and combine with watering to apply 30 kg of urea or 400 kg of human excrement per acre. Before the winter solstice, carry out winter irrigation. In the following spring, pour green water early and apply 25 to 35 kilograms of urea per acre. Water every 7 to 10 days depending on the moisture content. Depending on the growth of the garlic seedlings, spray 0.2% to 0.5% urea and 0.2% to 0.3% potassium dihydrogen phosphate on the leaves. During the entire growth period, pay attention to timely pulling out weeds.

Pests and diseases control: Garlic seedlings are susceptible to garlic maggot damage before and after seedling growth. Comprehensive control of root maggots can be carried out from the following aspects: Apply fully decomposed organic fertilizers. After the seedlings emerge, pay attention to tilling to loosen the soil and control water appropriately. When garlic seedlings are first affected, water the roots with 90% trichlorfon solution 500-600 times, or 80% dichlorvos 600-800 times solution.

Off-season cultivation technology of garlic seedlings: low temperature breaks garlic dormancy and promotes germination. After harvesting, the garlic heads should be treated at a temperature of 2 to 5°C for 30 to 40 days to break dormancy. Or wash the garlic seeds with clean water, then soak them with 3 to 6 mg/L gibberellin for 10 minutes. After drying, they are allowed to germinate on a sand bed in a cool and ventilated place. Generally, after 5 to 7 days, the length of the buds can reach 1 to 2 cm, and they can be planted. After planting, cover with sand, and then cover with 4 to 5 cm thick wheat straw or grass thatch. After the seedlings are fully grown, the grass thatch can be removed.

Furrow planting can be used, with a trench depth of 20 to 23 cm and a width of 28 cm. After applying fertilizer in the trench, level the bottom of the trench. Plant 7 to 8 rows in each trench, and cover with 2 to 2 layers of sand after planting. 3 cm thick, with a groove distance of 37 to 40 cm.

Fifteen days before planting, corn can be planted on the south side of the garlic seedling field and between the ditches to provide shade. After planting, cover with 2 cm thick sand before watering, and then sprinkle 3 to 4 cm thick wheat straw or wheat bran. It is advisable to control the water before garlic seedlings are unearthed, and generally keep them dry during the growth period. Topdressing can be done 1 to 2 times from seedling emergence to when the seedling height is 14 to 24 cm. After watering, first hoe the ground loosely, and then build the soil up to half of the depth of the ditch. After 20 to 30 days, build up the soil again to fill the ditch. It can be harvested and put on the market according to market demand.