Interplanting technique of garlic and ginger

Interplanting garlic and ginger can make full use of land, light, temperature, water, fertilizer and other conditions, using winter idle ginger field to grow garlic, changing one year into two crops a year can increase the yield of multiple cropping index and increase the benefit obviously. The yield of ginger is 2300 kg per mu, 2250 kg per mu of interplanting ginger, 1025 kg of garlic and 700kg of garlic bolts. The net income per mu of interplanting is 3200 yuan higher than that of monoculture. In addition, ginger is a shade-tolerant plant, not tolerant to strong light, the early growth stage needs medium-intensity light conditions, the implementation of garlic ginger interplanting, the use of garlic seedlings for shade, can save materials. At the same time, garlic can volatilize a bactericidal substance, which can effectively prevent the occurrence of ginger blast. The interplanting techniques of garlic and ginger are introduced as follows:

First, apply sufficient basic fertilizer and fine straighten the bed. Select the land with medium fertile and good drainage and irrigation conditions, apply 5000 kg of soil and miscellaneous fertilizer per mu, 50 kg of superphosphate, 30 cm of deep ploughing, rake fine and flat, open the border from east to west, 120cm wide, including 20cm wide, 100cm of border surface, and 100kg of ternary compound fertilizer.

Second, select the improved varieties and deal with the pieces of ginger. When planting garlic, we should choose garlic with large and disease-free petals as seeds, eliminate clips and rotten cloves; when interplanting ginger, we should choose ginger pieces that are disease-free, non-rotten, dry-shrunk and non-damaged, and strictly eliminate thin, fleshy browning or waterlogged and soft ginger pieces. Put the ginger pieces under the condition of wet sand with a temperature of 22-25 ℃ and an air relative humidity of 70% and 80%, so that the ginger buds can be fat and not grow too long.

Third, sowing at the right time and reasonable close planting. Sowing garlic seeds with plastic film mulching, east-west direction, border width 120cm, seed 6 rows, plant spacing 10cm, sowing 37000 plants per mu. 3 rows of garlic are planted on the border, leaving a 30 cm wide interplanting row. Garlic sowing can be perforated after plastic film mulching, or it can be ditched and sown with plastic film after sowing. Ginger is planted in holes, with row spacing of 60 cm, plant spacing of 20 cm and 5500 plants per mu, keeping the depth and plant spacing consistent as far as possible for management.

Fourth, fertilizing with formula by stages. In the case of sufficient base fertilizer, garlic basically does not need topdressing after sowing, and 10 kg urea per mu is harvested, combined with watering urea 10 kg per mu, one fertilizer is used for two branches, 15-20 kg compound fertilizer is applied, and 35-50 kg compound fertilizer is applied in prosperous period to meet the fertilizer needs of ginger.

Fifth, strengthen the management of watering and drainage. Ginger needs a lot of water in the later stage of growth, and the ground should be kept wet but not dry. Ginger and garlic are afraid of drought and waterlogging, so we should pay attention to drainage to prevent rotten ginger. In addition, it is necessary to cultivate the soil in stages and cut weeds by ploughing.

Pay attention to the prevention and control of diseases and insect pests. After turning green in spring, garlic sprays 90% trichlorfon 800 times to control garlic maggots. For the prevention and control of ginger blast, under the premise of more than three years of crop rotation, good varieties were selected, diseased plants were found, and disinfected holes were disinfected with quicklime. It was found that ginger borer (that is, heart-drilling worm) could be treated with 500,600 times of 50% insecticidal borer emulsion or 800 times of 80% dichlorvos EC, and could also be sprayed with 1500 times of dichlorvos and diazepam.