Since the beginning of this winter, there have been many smog in many places in northern China. Excessive smog will not only seriously affect the respiration of plants, but also hinder the photosynthesis of plants by blocking sunlight, especially for facility agriculture. . In view of the hazards of smog on agricultural production, it is imperative to take effective measures to prevent and control them in a timely manner. Recently, our reporter interviewed agricultural experts on this issue, and discussed how to manage the smog weather facilities agriculture, and hoped to provide guidance for the scientific production of readers.
Since the beginning of this year, there have been a large number of smog-locked weather in many places in China, and the air quality has been heavily polluted. Recently, Xi'an in Shaanxi Province has experienced a PM2.5 explosion, and the air quality is worrying, which also has an impact on the planting industry. In an interview Dec. 20, a professor at College of Horticulture, Northwest A & F University, Li Jianming told reporters, for severe fog and haze of the current country and more appear, the Ministry of Agriculture is seeking relevant comments, they are recommended to carry out as soon as possible for the fog and haze hazard Related research.
Haze weather is not conducive to plant growth
Talking about the impact of smog weather on the crop industry, Li Jianming told reporters that the impact of smog weather on plant growth is undoubted in the case of human health is greatly threatened. He said: "Smog weather causes plant photosynthesis to be affected, which affects the plant's metabolic system, which is a significant impact of smog weather on crop growth." And specific to the field crop, Li Jianming said frankly, because this has not yet been carried out In terms of systematic research, it is not possible to determine the specific aspects of these effects, but even so, it is an indisputable fact that plant growth is affected by smog weather.
Facility agriculture anti-fog needs to do well in the shed
Li Jianming pointed out that the impact of smog weather on facility agriculture is very direct, that is, the light in the shed is weakened and the temperature is lowered. In this regard, Zhang Baojun, a director of the Agricultural Industrialization Branch of the China Agricultural Society and a professor of the Agricultural College of the Northwest A&F University, believes that it is crucial to warm the sheds in time for smog weather.
So, how to achieve temperature increase and insulation in the greenhouse? Professor Zou Zhirong from Northwest A&F University and several suggestions for farmers engaged in facility agriculture planting: He said that in the case of low temperature, thickening the straw curtains on the greenhouse and carrying out multi-layer coverage is the most common method for heat preservation in greenhouses. In addition, cautious irrigation is also very important. Zou Zhirong reminds the majority of growers that smog and cold weather cannot be used for irrigation of crops, because irrigation will cause soil temperature to decrease and is extremely unfavorable for crop growth. In addition, he said that When the temperature inside the shed is lower than 8 Â°C, it is necessary to consider the method of smoking, set up the cold ditch, etc. to timely fill the greenhouse to provide suitable growth temperature for the crops in the shed.
Smog weather needs to strengthen the emphasis on shed light
Talking about how to fill the facility agriculture in the continuous smog weather, Zhang Baojun believes that the most economical and feasible way is to uncover the straw curtains at the right time, keep the shed film clean and fight for the growth of crops. To the light. Li Jianming told reporters that at this stage, there are conditions for replenishing crops in modern factory greenhouses. The most common method is to install some light sources so that the crops have sufficient light for photosynthesis to ensure their normal growth. Such light sources include bio-sodium lamps, LED lamps, and the like. â€œIt is necessary for crops to fill light in time, so all growers should pay more attention.â€ Li Jianming said.
Source of information: Agricultural Science and Technology News
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