Since October of this year, the temperature has changed by a wide margin, the temperature is low, and there are more hazy days. For greenhouse vegetables, greenhouse vegetables and open-air vegetables, vegetable farmers should do a good job in related management work.

Autumn and winter farms field management

The greenhouse solanaceous fruit and melon vegetables that have been planted for two years a year have entered the mid-to-late stage of fruit harvesting. It is necessary to top-dress fertilizer in time to promote growth. Mushi DAP 15-20 kg, with water flushing or 0.2% urea +0.2% The foliar spraying of potassium dihydrogen phosphate mixture should be covered with a shed film before the early frost comes, so as to avoid freezing damage; the second crop of greenhouse grown in the third year of a year is nearing completion, and now is the key to sowing the wintering spinach and fennel. During the period, we must adjust the soil moisture content and prevent it from drying out after sowing. The market can be flexibly controlled according to market conditions from the New Year to the Spring Festival.

Solar greenhouse vegetable field management

The suitable temperature for the growth of fruit and vegetable vegetables roots is about 25°C. In winter greenhouses, fruit vegetables are generally used to control dryness and no irrigation on the basis of pre-irrigation. When watering, it is necessary to look at the sky, see the seedlings, measure the temperature, and timely release the air. wet. Top dressing should be based on the length of the crop and the length of the growing period. Apply fertilizer in a timely manner in accordance with the requirements of balanced fertilization. Never use ammonium bicarbonate to avoid ammonia hazards. At the same time, it should be targeted to spray fertilizer. Sunlight greenhouse film is easy to absorb dust during use, or easily scattered grass clippings in the curling of the grass curtain, resulting in lower light transmittance of the film, especially haze weather requires timely artificial dust removal, improve the transmittance of the film, increase light ,increase temperature.

Field management of open field vegetables

Mainly refers to cabbage, radish, scallions, spinach, celery and other cool vegetables field management, with the gradual decline in temperature, open-field cultivation of autumn and winter vegetables are in a vigorous growth stage, after November into the harvest stage. The Chinese cabbage and radish do not use chemical fertilizers at the later stage of growth. They should be treated with less or no watering to reduce the water content of the plants and facilitate storage. Cabbage should be harvested at a daily average temperature of 5°C-6°C, generally before and after "Little Snow”, that is, in mid-to-late November; radish should be harvested at a daily average temperature of 7°C-9°C, generally before and after the “winter” In November and mid-November, celery is generally harvested in mid- and late November. Onion fresh weight reached its maximum before the frost. After it was frosted, the onion leaves lost water and the onion weight was reduced, but the onion weight did not decrease. For winter storage shallots, harvesting should be delayed as much as possible, and harvested before the soil is about to be frozen in mid and late November.

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