Double-season cultivation techniques of garlic

Double-season garlic is to grow one season of early green garlic and one season of plastic film garlic in the year.

The cultivation of garlic can effectively improve the land utilization rate, achieve "three kinds of three harvests" or "four kinds of four harvests" in a year, and increase the income obviously at the same time. According to the survey, the output value per mu of second-crop garlic increased by 52%, 46.6% and 111.1% respectively compared with single-season green garlic and single-season garlic, and the net income per mu increased by 53.3%-45% and 76.9% respectively compared with single-season green garlic and single-season garlic.

Key points of cultivation techniques of double-season garlic:

1. Select varieties with high quality, high yield and strong spring sex. "Ershui Zao" is generally selected as the leading variety of green garlic.

two。 Do a good job in seed treatment and strive to sow early. Garlic farmers generally use the method of cold storage to deal with garlic seeds. Peel the garlic into cloves, put it into a constant temperature storage 10-15 days before sowing, store it at about 0 ℃ for 10-15 days, break the dormancy period of garlic. The cold treatment time of different kinds of garlic is different, which must be mastered in production.

3. Increase sowing rate and increase density. The growth period of early green garlic is short, and the individual growth is small, so it is necessary to increase the amount of seed to increase the density. Generally, the row spacing is 12-15 cm, the plant spacing is 1.5-3 cm, and 12000-15000 cloves are sown per mu.

4. Harvest in time, sow and harvest garlic. The growing period of early green garlic is generally 70-80 days, and the harvest should be finished by October 25 at the latest.

Collecting garlic (plastic film garlic) is mainly collecting garlic bolts and heads. Because the sowing time of garlic is 15-30 days later than that of conventional cultivation, the bolting time of garlic is 7 ~ 10 days later, so the late-maturing varieties should be selected. The main cultivation techniques for harvesting garlic are as follows: first, it is necessary to apply sufficient base fertilizer to promote growth. The "three fertilizers" should be applied at the same time, that is, 1000-1500 kg per mu of organic fertilizer (sheep, pig, poultry, human manure), about 50 kg of special compound fertilizer for garlic, and about 1500 kg of flour fertilizer (corn stalk and wheat straw) covered by the previous stubble should be used as base fertilizer; second, sowing at the right time and sowing at the right time. To achieve the previous early green garlic field, one piece of land preparation, sowing one piece, try to narrow the gap with conventional garlic sowing time, with special emphasis on the latest sowing date at the end of October; third, film mulching to increase temperature and strive for early seedlings. Generally, ultra-thin plastic film is covered after sowing and before seedling, with a dosage of 2 to 2.5 kg per mu, which can be directly broken by garlic sprouts without artificial film breaking. In warm winter years, the growth of garlic can be regulated by fertilizer and water. Fourth, attention should be paid to the application of re-green fertilizer and bolting fertilizer. Urea can be applied to 1215kg per mu each time.