Chinese cabbage pollution-free medicinal technology specification
1 Select cabbage varieties that are resistant to pests and diseases, reduce or eliminate the use of pesticides to reduce pesticide pollution. According to the pests and diseases prone to occur in the cultivated areas, the corresponding pest-resistant species should be used. 2 Select varieties according to cultivation conditions, consumption habits and market demand. Therefore, good varieties with high yield and good commercial quality should be selected. Seed quality meets the requirements of GB16715-1999. Rejected the use of genetically modified Chinese cabbage varieties.
(2) Seed processing:
1 Chemical seed dressing: seed dressing with 0.2% to 0.3% of 50% acetaminophen WP, or 47% Garnett WP with 0.3% seed weight, or 50% with 0.4% seed weight DT WP or 50% thiram wettable powder dressing, or Feng Ling 50 to 100 grams of seed dressing 150 grams (anti-downy mildew, soft rot, black rot, keratoses, etc.).
2 Soak in warm soup: soak in warm water at a temperature of 50°C for 25 minutes and allow to cool and sow (black spot).
(3) Prevention and control of pests in the sowing area: In areas with serious damage to underground pests, use 5% Supbo Emulsion 1000-2000 times before sowing, or 25% Sevan WP 150-400 times after spraying with fine soil. Into the soil.
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Hyaluronic acid is a high molecular weight polysaccharide with D- glucuronic acid and N-acetyl-glucosamine as repeating structure unit. Because of the action of hydrogen bond between the monosaccharide in HA linear axle, HA molecular forms a rigid screw column structure in space. Strong hydrophilic properties exist due to the large amount of hydroxyl groups. Furthermore, HA has a special water binding function and binds its water very strongly, so that it has strong water retention. Theoretically its binding water capacity is up to 500 ml/g as an ideal natural moisturizing factor.
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