Warming and heat preservation scientific sheds. Excellent shed type, lighting angle, greenhouse efficiency, wall thickness, and thickness of straw curtains should all meet the standards. Hanging the second curtain in the shed increases the temperature by about 3°C. After covering the straw curtain in the evening, a layer of plastic film is added to protect against cold, which can increase the temperature of the greenhouse by 3 to 4°C. In addition, organic fertilizers are applied more and more, because the organic fertilizers are large and numerous, and the air is full of them, which can effectively reduce the loss of soil heat. Organic fertilizer can also release certain heat during the decomposition process, which can significantly increase the ground temperature and temperature in the shed.
Increase light intensity. First, we must keep the shed film clean, clean the shed film regularly, clean the snow in time for snow days, and increase the transparency of the shed film. Secondly, a reflective film was installed in the shed. The aluminum film reflective screen with a length of 3 meters and a width of 2 meters was hung on the north wall of the shed to make it perpendicular to the ground, which could add 40% light to the ground. In the selection of the film to be selected without drip film, can enhance the light intensity in the shed and improve the temperature inside the shed. In addition, the removal of the old leaves of the lower part of the plant can increase the translucency.
Cultivate strong plants to promote weak control. When strengthening the management of weak seedlings, the organic fertilizer and available phosphorus should be used in the early stage. In the middle and later stages, quick-acting nitrogen fertilizers can be used. It is advisable to recover 500-600 kg of manure or 20 kg of cake fertilizer per mu when it is in flowering. - 30 kg, add 15-20 kg of Pu pass calcium phosphate. After entering the full fruit period, topdressing should be turned to fast-acting nitrogen fertilizers, and chase after the results 3-5 times. At the same time, pay attention to watering in conjunction with topdressing. For excessively vigorous seedlings, the stems of the plants can be pinched at the flowering stage to promote the accumulation of photosynthetic products and promote fruit setting.
Take heart at a proper time. Generally, the rules of fruit set in eggplant increase with the tillering of the plants. It is basically one fruit per tiller. Therefore, the picking should be carried out promptly after planting to promote its rapid branching, increase the result area, and increase the fruit setting rate.
Use hormones correctly. Hormone treatment flowering period with 20ppm anti-dropping spray, or with 30 ~ 40ppm 2,4-d flower, can be achieved to prevent flowering and fruit drop, in order to improve the fruit setting rate.
Foliar topdressing in winter Under low temperature and low light conditions, the organic matter and microelements in the soil transform slowly, and it is unable to meet the needs of plant growth. It is necessary to supplement the leaf surface fertilizer in time to achieve sufficient nutrition to promote flower bud differentiation and ensure fruit preservation. It can be sprayed with Baolifeng 150 times, borax or boric acid 2000 times, magnesium sulfate 1000 times, zinc sulfate 1000 times, rare earth 600 times and other foliar fertilizers.
Do artificial pollination. The eggplant planted in the protected area should be pollinated artificially, and pollination time is the best at 8 to 10 in the morning.
Timely prevention of pests and diseases. The main cause of fruit setting rate is gray mold. Prevention of gray mold can take agricultural control and chemical control. Agricultural control: (1) Control watering and reduce greenhouse moisture. Watering should be carried out in the morning to prevent overdose. At the beginning of the disease, watering should be properly controlled, and the water should be ventilated and drained immediately after watering. (2) Remove the petals and leave no petals at the root, otherwise it may easily cause gray mold. (3) timely removal of diseased fruit. Chemical control: (1) smoke, 10% speed light smoke agent can be used, 250 grams per acre medication. (2) To spray powder, use 5% chlorothalonil dust agent or 6.5% vanillin powder, spray 1 kg/mu for 1 day, and spray it once every 7 days. (3) Spraying, spraying 40% of Le Suspension 1200 times at the beginning of onset, or 1000 times of Nullien wettable powder, spraying once every 7 days, spraying 2 to 3 times.
Fluorine-Containing Methylbenzene
Fluorine-Containing Methylbenzene products can be used as herbicides in the manufacture controlling wheat fields, cotton fields and other broadleaf weeds and perennial weeds. It can also be used in the manufacture of antipsychotics drugs.
The Fluorine-Containing Methylbenzene products must be kept under seal, once exposed to light will immediately cause discoloration. It should also be stored in a cool, ventilated warehouse, away from fire and heat. Compartment temperature should not exceed 30 ℃. And make the appropriate technical measures for fire and explosion. Products will Decomposition by high fever and emit toxic gases, such as carbon monoxide, carbon dioxide, hydrogen fluorid. Due to ts vapor is heavier than air, it can spread from low place to far away places. In case of fire conditions, should not fire with water. In case of a small amount of leakage should be evenly sprayed with dilute hydrochloric acid. In case of large spills should build a causeway or trenching asylum. The transfer pump to tankers or exclusive collector, recycling or shipped to the waste disposal sites.
Containing Methylbenzene, 5-Fluoro-3-Nitrotoluene,2-Bromo-5-Fluorobenzotrifluoride
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