The use of mulching techniques for the cultivation of garlic has a significant effect on production. Plastic film cover effect. After covered with plastic film, garlic has the following obvious effects: 1 Improved environmental conditions. After the mulch is covered, the ground temperature can be increased by 2 to 3°C at 5 cm before the winter. Therefore, the growth of garlic seedlings before winter is accelerated, and the seedlings are robust and strong in cold resistance. With the high temperature in the winter, the overwintering rate of cold death due to cold is greatly reduced, about 5 times less. In late spring, due to the high ground temperature of 2.6-3.7°C, the garlic seedlings return to the early spring and grow fast. The large plant growth and large leaf area lay the foundation for high yield. The impermeability of the mulching film reduces the evaporation of soil moisture and is beneficial to the protection of soil and drought. Therefore, after the mulch is covered with the mulch, the number of watering can be reduced, and the degree of soil turbulence is appropriate. In early spring, the disadvantages of lowering the ground temperature by watering are avoided, and favorable conditions are created for plant growth. After the mulch film is covered, the water conservation and fertility of the soil are enhanced, the nutrient utilization rate is improved, the soil is loosened, the ground panel knots that prevent the watering from happening excessively are prevented, and soil environmental conditions are effectively improved. The mulching of garlic also reduces the occurrence of pests and diseases. The mulch prevented the fly from spawning around the garlic root, reducing the damage caused by the root rot. Plastic film coverage also inhibits the occurrence and damage of weeds. 2 promoted the growth and development of garlic. Due to the improvement of the environmental conditions, under the conditions of garlic mulching, the plants grow robustly, the root system is developed, and the leaf area is large. The leaf area index can be increased by 0.025. 3 early maturity and high yield. Due to the temperature effect of the plastic film, after the garlic film is covered and cultivated, the bolting period can be 6 to 10 days in advance, and the mature period can be 5 to 8 days in advance. Precocity creates conditions for early evapotranspiration, which can effectively regulate the cultivation period of the crop. Using mulching, garlic can increase 55.35% of garlic sprouts and increase production of 44.8% of garlic bulbs. (2) Cultivation techniques 1 Site preparation and fertilization. Fine soil preparation can improve the efficiency of mulching. After the mulch film is covered, the fertilizer is increased by garlic. Therefore, organic fertilizer should be added to reduce the labor trouble of top-dressing. Plastic mulching is generally done with small sorghum. The width depends on the width of the film. 2 cover film. General first sowing, back cover film. The film is tight and compact. Membrane close to the ground; no voids, no wrinkles on the membrane, a hole in time with soil plugging. 3 sowing. As the growth period of the mulching film is extended, the autumn sowing garlic can be properly sowed for 5 to 7 days. The density should be appropriately diluted, and 35,000 to 38,000 plants per acre are appropriate. The sowing method is the same as autumn sowing. 4 Seedling management. After planting the film, water immediately to promote garlic rooting. When the seedlings are near, pour water once more to facilitate the emergence of seedlings, break the film, and continue to grow. The buds that are not covered by the membrane can help them break the membrane. The smaller the artificial membrane is, the better. In the growth stage of seedlings, irrigating the seedlings for 1 time, and when wintering, pour 1 winter water. During the growth period, the animals should be inspected regularly and when the seedlings are pressed under the membrane, they should immediately lift out of the membrane to prevent the seedlings from growing under the membrane. 5 late management. During flower bud and scale bud differentiation, it is still necessary to protect the mulch. Play its insulation, until the early stage of convulsions before removing the film. Other management is planted with autumn sowing garlic.
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