Method and Precautions for Growing芥蓝 (Chinese Broccoli)
In the trend of urban farming with balcony gardens,芥蓝 has become a preferred crop for urban farmers due to its unique flavor and nutritional value. This cruciferous vegetable is rich in vitamin C and dietary fiber, and its unique glucosinolate components provide anti-cancer effects. Mastering the correct cultivation method allows even novice gardeners to harvest fresh and tender stems.
Accurate Control of Environmental Conditions
Microclimate Management of Three Elements
Soil mix is recommended to be a 5:3:2 blend of garden soil, leaf mold, and river sand, with 3kg of decomposed sheep manure added per cubic meter as a base fertilizer. Temperature management requires special attention to day-night temperature differences, with the greenhouse temperature not exceeding 32°C at noon and maintaining between 18-22°C at night. Light intensity is suggested to be kept between 20000-25000Lux, with supplementary lighting used on cloudy and rainy days to meet growth requirements.
Dynamic Balance of Water
Using a tidal irrigation system can achieve precise water supply, with the seedling stage substrate humidity controlled at 60%RH, and increased to 75%RH during the budding stage. In the rainy season, a rain shelter should be set up to prevent waterlogging, equipped with soil moisture sensors for real-time monitoring. Waterlogging should be drained immediately when the EC value exceeds 2.5mS/cm.
Advanced Cultivation Techniques
Key Seedling Stage
Overwintering Management Strategy
Method and Precautions for Growing芥蓝
In the northern regions, a double-layer film greenhouse should be constructed, equipped with a hot air stove to maintain a night temperature above 10°C. Using black plastic mulch can increase soil temperature by 2-3°C, combined with foliar application of amino acid fertilizer (diluted 800 times) every two weeks to effectively enhance the plant's cold resistance.
Comprehensive Pest and Disease Control
Biological Control System
Hanging yellow sticky traps (20 pieces per mu) can monitor the population dynamics of aphids, and releasing lady beetles (500 heads per mu) can be used for biological control. Black rot disease prevention can use a wettable powder of Bacillus subtilis (10^8CFU/g), with foliar application every 10 days.
Emergency Response Plan
During the爆发 period of cabbage caterpillars, use Bacillus thuringiensis (8000IU/mg) suspension at a concentration of 1000 times, combined with physical removal of eggs. Plants with root galls should be immediately removed, and the affected soil holes should be treated with lime nitrogen (30g/hole) for soil disinfection.
Through scientific environmental regulation and a systematic management plan, home gardeners can achieve year-round production. It is recommended to use a stepped sowing method, planting a batch of seedlings every half month to ensure continuous harvest and分散种植风险. When harvesting, retain 2-3 true leaves at the base, and apply seaweed fertilizer to stimulate secondary sprouting and extend the harvest period.