Greenhouse Vegetable Seedlings

In winter and spring, the temperature is relatively low. In order to make vegetables in the morning market, cultivation of greenhouses is the key. For the cultivation of eggplant and melon vegetables, the following seven criteria should be followed:

1. Disinfect the seeds: Use hot water of 55-60°C for 15 minutes to kill the bacteria attached to the seed surface and some of the bacteria that are lurking inside the seeds. Stabilize the temperature while disinfecting and ensure the time.

2, seed germination off: 15 minutes after disinfection with 30 °C warm water soaking about 8 hours, and then washed again into the gauze bag, and then into a wider plastic bag, germination and timing at 25-30 °C conditions Flip, wash every Other day, ensure the temperature, can germinate neatly.

3, bed soil disinfection off: bed soil is not sterilized, seedling disease and more, the resulting loss can not be recovered. The measures are: (1) Solanaceous vegetables are mixed with 70% pentachloronitrobenzene and 50% thiram or mancozeb, etc., with a mixture of 8-9 g per square meter, and 15 kg with semi-fine soil. 1/3 of seed pad soil at seeding and 2/3 cover soil. (2) For melons, use 50% carbendazim or thiophanate-methyl for 1 part, dry fine soil 1000 parts, and mix up with medicinal soil. Sprinkle 10 kg per square meter. The method is the same as above.

4, temperature off: In the temperature of 25-30 °C and ground temperature of 22-25 °C conditions, the emergence of fast and homogeneous. In general, if the seeds are unable to germinate under low temperature and high humidity conditions for a long time, they can be easily rotted. After the vegetable seedlings are flushed, the temperature in the greenhouse is kept above 20°C during the day and above 10°C in the evening. The seedlings are subjected to a low-temperature hardening seedling to enhance disease resistance, cold resistance and avoid long growth. When the outside temperature is no higher than 15°C at noon noon, ventilation can be made through the window and the sun shines. At night, the outside temperature is lower than 4°C to cover the straw curtain. When two cotyledons are fully stretched and the first true leaf is exposed, the temperature in the daytime can be adjusted to 25-28°C, and the temperature in the night can be adjusted to 15-20°C to facilitate growth and development.

5, humidity off: high humidity, soil temperature is not easy to rise, prone to disease or frost damage; humidity is too low, easy to become a frozen seedlings. Low humidity can be solved by watering, and high humidity is more troublesome. The method of dehumidification is: (1) Ventilate and dehumidify without affecting the temperature of the greenhouse. (2) Pouring enough water during sowing, and avoid watering at seedling stage. (3) Apply 0.5-1 cm thick ash on the bed to increase moisture and humidity. (4) A parallel light bulb is placed under a small shed to dampen and fill light. (5) The electric wire is laid on the bottom of the bed before sowing.

6. Diseases related to diseases: Prevent diseases in time. Solanaceous fruit damping-off disease can choose to use quintoxe or anti-virus quinone, melon plague disease can choose to use chlorothalonil or anti-virus quinones; blight can choose to use dexamethasone or methyl quicterine, both diseases occur simultaneously Preclosure or Formosa can be used. If none of the above two drugs can choose chlorothalonil or anti-virus drugs. For the prevention of Bacillus subtilis, Brown Vegetation, and Botrytis cinerea should also be prevented from the seedling stage. Chlorothalonil, antiviral bacillus and sulfasulfuron should be selected.

7, fertilization off: nurturing strong seedlings, should be in the preparation of bed soil when the formula fertilization, one-time application of base fertilizer, do not top-dressing period of fertilizer. If the bed soil is not fertile, small yellow leaves of the vegetable stems and stems should be topdressed. But should pay attention to: (1) Select the sunny morning morning topdressing human fecal urine, pig manure, diluted with 20 times the water before topdressing, and finally rinse with water to prevent burning leaves. (2) As far as possible without chemical fertilizer, if the concentration is low, urea 0.1% is appropriate. (3) Administration of "Bortonin".

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