Control of jujube armyworm
(1) artificial physical control. Scrape the bark to kill the pupa: use the dormant season of winter jujube to artificially scrape off the rough bark and wing skin of the trunk and branches, spread plastic sheets under the tree in advance to collect bark and cocoons, and centrally water them. Black light trapping and killing adults: in the adult occurrence period, set up black light (insecticidal lamp) to trap and kill adults. The armyworm bags for chemical leakage control were removed from May to June. From the first ten days of September, the grass handle was tied up at the branches of the tree trunk to induce the insects to pupate, and then removed and burned.
(2) chemical control. The key is to do a good job in the control of the first generation of larvae, which is basically carried out synchronously with the jujube inchworm, and the chemicals used are the same. The control of the second generation larvae is around the flowering stage, when a large number of natural enemies occur. When selecting pesticides, we should prevent natural enemies and dense bees. Benzoyl urea insecticides, such as 20% acetylurea suspension 8000-10000 times, can last for more than 15 days. 5% carbendazuron EC 1500 times can also be used to control red spider mites. 20% mackerel (diformamidine) 1000 × 2000 times, 20% mite detergent 2000 × 3000 times, or 50% miaoshengjing suspension 5000 × 6000 times were selected.
(3) biological control. Sexual attractant disorientation method: see above, jujube armyworm sex attractant related content. Biological control of natural enemies: under the condition of protecting natural enemies, Trichogramma can be used to control Trichogramma. During the spawning period of the second generation adults (starting in mid-and late July), 3000 Trichogramma wasps are released from each plant. On the basis of egg investigation in the field, it is best to release one time at the initial stage and the peak period of eggs (each time at an interval of about 4 days), and the parasitic rate of eggs in the field can reach more than 85%. Microbial insecticides were sprayed with Bt (10 billion live spores / g) emulsion or Beauveria bassiana powder (10 billion live spores / g) 500 × 600 times.
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Xylitol jujube acetic acid fermented beverage
Jujube has the functions of sedation, sleep-aiding, antihypertensive, anti-allergic, protecting liver, enhancing muscle strength, anti-oxidation, anti-tumor and so on. Acetic acid beverage can soften blood vessels, lower blood pressure, prevent arteriosclerosis, increase appetite, promote digestion and so on. Xylitol is a promising functional additive. Raw material formula: jujube 20kg, liquid xylitol 2kg, honey 2kg, yeast starter 10kg, acetic acid bacteria starter 15kg. The main points of operation explain the preparation of jujube juice:
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Brewing drunken jujube with fresh-keeping bag
Practice: 1. Choose semi-dried red dates. If the dates are too dry, steam them in a steamer and boil for 1.5 minutes. After washing, dry the water, put it into a fresh-keeping bag, add liquor above 55 degrees, generally 500g red dates plus 20g white wine, fasten the mouth of the bag, shake and knead, let the red dates stick to the white wine evenly; after 3.10 hours, shake and rub again, seal, store for 4-5 days, and then take out and eat. After taking it out, tie the mouth of the bag tightly again and it can be stored for about 3 months. The drunken jujube made is light.
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