December is the month with the least daylight hours in a year, marked by stronger winds and colder temperatures. Effective management should focus on monitoring crop conditions and adjusting insulation based on weather changes. Early removal of weeds and grasshoppers should be done as early as possible in the afternoon to minimize ventilation during midday. Aim to maintain at least 6 to 8 hours of light and keep the soil temperature above 16°C to support the normal growth of heat-loving crops like tomatoes, cucumbers, and peppers during the winter.
For crops that are weak or have been planted late, it's recommended to spray Yunda 120 combined with Jinchunbao foliar fertilizer every 5 to 7 days. This can help promote better growth. Additionally, it’s important to manage humidity, fog, rain, and snow carefully. As soon as the weather allows, expose the grass cover to sunlight. Whenever the temperature remains stable, maximize light exposure. The minimum temperature inside the greenhouse should not drop below 8°C to 10°C. If the temperature becomes too low, cover the grasshoppers with lids during midday and ventilate appropriately. Use shade nets to prevent intense sunlight from damaging young plants.
Disease prevention and control are crucial during this time. As temperatures drop, reduced ventilation leads to higher humidity, increasing the risk of diseases such as downy mildew in cucumbers, gray mold, bacterial angular spot, late blight, leaf mold in tomatoes, and various fungal and bacterial diseases in peppers. To manage these, water should be applied in small amounts after sunny days. Temperature control should aim for 28°C to 30°C during the day, followed by proper ventilation to reduce humidity and raise temperatures. Fungicides like 50% Anke diluted 1500 times, 43% Haolik diluted 4000 times, or 2000+ Yunda 120 diluted 1000 times can be used. Mix with agricultural streptomycin at 1200 times or apply Chlorothalon aerosol, spraying every 5 to 7 days or using smoke agents once a week. Alternate between different pesticides to enhance disease control effectiveness.
For sowing, energy-saving solar greenhouses can plant two batches of loquat in early December. Suitable varieties include Shuangfeng, Lulong, and Thai Acne. For beans, consider Liang 906, Fufeng, and Zhizhuang 28-2. Mid-season cucumber varieties like Jinlu 3, Shengfeng 3, and Jinyou 30 are ideal. For Xihu types, Jinghu No. 1 and No. 3, along with French fiber hand, are good choices. After the powder stage, varieties like Century Flour Star, L402, Paul Crown, and Gold Shed perform well. For peppers, options include Jin Green 21 (corn pepper), 9785, Chaoyan 15, Sujiao 5, and others.
In winter sheds, use multiple layers of coverage or install electric heating lines to maintain indoor warmth. To improve seed vigor, soak seeds in Jinfulai diluted 50 to 100 times for 1 to 2 hours, which helps enhance their resistance to cold and improve overall resilience.
Flap Barrier,Flap Barrier System,Flap Turnstile Barrier Gate,Security Gate Barrier
Shandong Changchongyun Intelligent Technology Co., Ltd. , https://www.ccyparking.com