Soilless cultivation of Phalaenopsis

Phalaenopsis is one of the world's four largest orchids, belonging to the orchid family of perennial plants and flowers. The flower is elegant and noble, and graceful, and it is more and more popular with the people.

I. reproduction

Divided into sexual reproduction and asexual reproduction. Sexual reproduction is generally carried out through the process of "pollination-maturation of fruit pods-sowing on specific media-production of factory bottle seedlings". Asexual reproduction is divided into two ways: asexual cell tissue culture and adventitious shoots produced by the plant itself. At present, factory breeding mostly adopts two methods, namely, sexual reproduction planted in the culture medium and asexual reproduction of asexual cell tissue culture. The former produces low wood but the progeny of the progeny are unstable; the latter requires high production technology but the progeny are relatively stable.

Management

1. Temperature. During vegetative growth, the temperature is generally controlled at 20-35 ° C. The temperature required for vernalization of large seedlings is 15-18 ° C. The temperature requirement from arrow drawing to flowering is 18-20 ° C at night and 25-30 ° C from day. The ornamental temperature during flowering is best controlled at 15-20 ° C. The temperature difference between day and night is generally greater than 10 ° C, not to mention the negative temperature difference between day and night.

2. Lighting. The light intensity of young seedlings (from the bottle to 6 months of age) is controlled at 5000-8000 lux; the light intensity of middle seedlings (from 6 months to 1 age) is controlled at 8000-15000 lux; the light intensity of large seedlings (from 1 year to pumping arrows) is controlled at 15000-25000 lux; light intensity of arrowhead seedlings is controlled at 25000-35000 lux; flowering ornamental plants 5000-10000 lux.

3. Fat and water. Demineralized water is preferred. For non-demineralized water, non-polluted rivers, rivers, lakes, and wells with an inorganic salt concentration of not more than 0.4 milliSiemens / cm can be used. Non-polluted rain and snow water can also be used. It must be used in cultivation facilities before use. Let stand for 1 night.

For small seedlings, use 5,000 times the amount of flowers produced in the United States (30-10-10); for medium seedlings, use 3,000 times the amount of flowers (30-10-10) and as many flowers (20-20-20) as the alternate use every week; for large seedlings, use flowers Duoduo (20-20-20) once a week, 2000 times liquid; Duoduo flowers (9-45-15) 1500-2000 times liquid during flower bud differentiation; arrowhead seedlings used before flowering (10-30- 20) and Huaduoduo (20-20-20) 2000 times solution are used alternately every week. After the first flower blooms, generally all fertilizers are stopped and only a small amount of water required for its flowering period can be provided.

4. Pests and diseases. Master the principle of "prevention-oriented, combination of prevention and control", and spray mixed pesticides such as Redomier and Wanling every other day to prevent it. The common diseases are soft rot, anthracnose, gray mold, etc. You can use agricultural streptomycin, mancozeb, gray frost, etc. to prevent and control them. The common pests are few, mainly aphids, scale insects, etc. Prevention and control.

In addition, the relative humidity of the air should be maintained at 60% -80%. The younger the seedling, the greater the relative humidity. Ventilation should be regularly circulated in the cultivation greenhouse.

In actual production, several hormones were applied in combination with daily management, such as plant power 2003, peptide fertilizer, triacontanol, etc., and adding biological micro-fertilizer to the sphagnum substrate had received good results.

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