Treated like cucumber, happy sunshine plant, the temperature will be affected, such as powdery mildew continue to occur. If chemical pesticides cannot be cured, use a physical and chemical treatment.
First, reasonable air release to regulate light, temperature and humidity:
1. Uncovering the grasshopper: In principle, it is to release the grass in the morning, and in the morning, as long as the light can shine into the greenhouse, the grasshopper will be uncovered. When the temperature in the shed falls to about 20 degrees in the afternoon, the grass will be covered. Specifically, when the open grass thatch temperature has been rising, indicating that grass thatch lift too late; Pengwen still down for half an hour after the open grass thatch, grass thatch lift explanation of premature. Under normal circumstances, the shed temperature began to rise within half an hour after the grasshopper was opened. In the warm and sunny days, the night cover will be uncovered, and the early cover will be exposed in the cold and cold days. The cover will be exposed in the evening when it is cloudy. When the time is cloudy, it should be gradually uncovered to avoid flashing seedlings;
2, sub-periods leaked temperature:
In the morning, the first wind should be released after about one hour of uncovering the grass. It is not good for cucumber to use the carbon dioxide accumulated in the evening to carry out photosynthesis and affect the formation of the production. It is too late, which is not conducive to temperature regulation. After that, the air release control is carried out according to the temperature requirements and actual changes in each period of the shed. Note that when the temperature in the shed is too high, it is forbidden to let the air release too large and the temperature drops too fast to avoid damage to the seedlings.
Second, the regulation of water and fertilizer to promote growth: about five days after planting, depending on the moisture content to determine Huanmiao pouring water, pouring small water point is; the early flowering try not watering, so as to avoid excessive growth of cucumber; take root after the live melon, depending on the moisture watering, The relative humidity of the soil is required to be maintained at 80-90%, and the small water is poured. When watering the melon water, it can be applied for about 10 kg of urea. Later, in the principle of “less application of diligenceâ€, adopt “water-based fertilization†or “water and fertilizerâ€. In the early stage, nitrogen fertilizer was the main factor, and in the middle and later stages, phosphorus and potassium fertilizers, calcium fertilizers, zinc-iron-boron and other medium and trace elements were added, as well as organic fertilizers and biological fertilizers.
III Using pesticides disease control: the winter and spring, when the combined effects of the greenhouse temperature of 20 degrees or less, more than 90% humidity, poor lighting conditions, such as long, often cause gray mold, powdery mildew, keratophyre Diseases and downy mildew are often mixed. The principle of rational mixing and alternating use should be used to control the occurrence of diseases.
1, pyrimethanil + Difenoconazole yl or mixed phenol ether, of gray mold and powdery mildew, scab, etc. are control effect;
2, downy mildew hydrochloride + difenoconazole mixed, or dimethomorph + nitrile azole, have the same effect on downy mildew, white powder and black star disease;
3, enoylmorpholine + organic copper preparation, or dimethomorph + agricultural streptomycin (neucollin, Chunremycin can be), effective against downy mildew, keratin and other bacterial spot disease;
4. When the disease has occurred, select one of the above formulas for sterilization according to the main disease type, spray the ether fungus esters every 3-5 days, and then spray another one of the above formulas every 5-7 days. This is used interchangeably. When no disease occurs, spray the medicine every 7-10 days; when the disease occurs, the spraying time is shorter, and the prevention and treatment are alternately matched.
Through the comprehensive application of the above three measures, it is believed that the cucumbers in the greenhouse will grow robustly, stabilize production and increase production.
1. Coagulation and Flocculation: In this step, chemicals are added to the water to make small particles clump together and form larger particles called floc.
2. Sedimentation: The floc settles to the bottom of the tank and is removed from the water.
3. Filtration: Water is passed through layers of sand, gravel, and charcoal to remove any remaining particles and impurities.
4. Disinfection: Chlorine or other disinfectants are added to kill any remaining bacteria and viruses.
There are also several water treatment plans that can be implemented to ensure safe and clean water. These plans include:
1. Reverse Osmosis: This process involves forcing water through a membrane that removes impurities and contaminants.
2. UV Treatment: Water is exposed to UV light, which kills bacteria and viruses.
3. Ozonation: Ozone gas is added to water to kill bacteria and viruses.
4. Ion Exchange: This process involves exchanging ions in the water to remove impurities.
In conclusion, water treatment is a vital process that helps ensure safe and clean water for consumption and other uses. The process involves several steps and there are various treatment plans that can be implemented to achieve this goal.
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