In winter, the time of light is shorter, the temperature is lower at night, the humidity in the greenhouse will gradually increase, and some diseases in low temperature and high humidity will easily occur, adversely affecting the normal growth of tomato. Professor Yang Zhong'an of the Academy of Agricultural Sciences of Northwest Agriculture and Forestry University recommends tomato In the winter, attention is paid to the management of warm water and fertilizers.

After the artificial insulation enters the winter, the tomatoes in the greenhouse should be focused on heat preservation and warming. In the event of heavy snowfall or high winds, the temperature can be increased by using coal stoves, heating, or artificial supplemental lighting.

Pay attention to the ventilation light The tomato is a hi-light crop. When the light is not sufficient, a light curtain can be hung on the back wall, dust or dirt on the shed film can be periodically cleaned, and the mist in the film can be removed to increase the light in the shed. Ventilation can achieve the purpose of dehumidification, ventilation and temperature adjustment. Ventilation time should be adjusted according to the weather conditions. Every day must ensure a certain ventilation time.

Scientific watering, fertilizing, and watering should be combined with topdressing. You can't just pour water. Fertilizer can not use single element fertilizer, it is better to use ternary compound fertilizer or fertilization, to choose continuous sunny, and the amount of watering is small, the time is generally selected in the morning or at noon.

Disease prevention and control in winter is a period of high incidence of Botrytis cinerea, late blight, and bacterial diseases. It should be prevention-based, and it should be sprayed once every 5-7 days. Pyrimethanil, streptomycin and thiophanate-methyl may be used, or Bifidozyme + streptomycin + diphenyl ether ring, etc. to do several alternate formulations of the use of alternating agents. The reporter Hu Xiaowei

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