The use of greenhouses to produce sassafras tree buds has a series of advantages, such as less labor, quick results, easy operation, easy-to-handle technology, long-term market supply, and high benefits, and is a new planting pattern for farmers to become rich. The production and management techniques of greenhouse taro are summarized below for reference. I. Variety selection The citron has the distinction between northern citron and southern citron. From the color of the leaves, there are purple citron and green leaf citron. Purple leaf citrons represent black oil clams, red oil clams, etc.; green leaf clams are oil clams, yellow umbrellas and so on. Northern citrons rarely seed, rely on the root larvae to breed, the reproduction rate is very low, and production is rarely used. Southern citron has a large number of seeds, which are propagated by seeds and used in production. Second, planting seedlings 1. Seed collection. In the autumn, no pests and diseases that are fully mature are harvested. 2. Germination. In mid-June, the seeds were soaked in warm water at 25°C for 24 hours and then germinated in a warm place. Germination was checked daily and the seed was sown after sowing. 3. Site preparation before broadcast. Sowing directly in the shed, before planting the soil, apply 5,000 kg of decomposed high-quality organic fertilizer and 50 kg of compound fertilizer per acre. Deep-turning and flattening, made parallel, north-south direction, distance 1.2 meters, 5 days before sowing, intensify water irrigation, in order to facilitate the accumulation of soil. 4. Sow. Seeds are sown after sowing. Grooves are 60 cm apart, 5 cm deep, 2 lines per plant. Sprinkle the buds in the ditch, then cover with fine soil (conditionally covered with fine sand), thickness 1 cm. Use 1.5 kg per mu. 5. Post-broadcast management. When the soil is dry after sowing, it is timely to replenish the water, but because the scented seedlings are thin and weak, water can be sprayed with a watering can. After the seedlings are unearthed, it is necessary to control the irrigation during the lignification of the tender stems, appropriate seedlings, and promote the lignification of the seedlings. After the seedlings are unearthed, the seedlings need to be planted and the seedlings are removed. Leave a healthy, well-distributed nursery stock. Seedlings are sowed and weeded in time before the seedlings grow quickly to prevent grass shortages. Toona oleracea seedlings susceptible to blight, should be timely removal of diseased plants, and with 100 times copper sulfate solution root. Third, production management 1. Clean the shed. When the temperature falls below 0°C during the night, the leaves will be frozen and withered, the leaves and stems will leave the layer and the leaves will fall off. At this time, the greenhouse shall be cleaned. The main task is to clean the leaves and clear the weeds and collect them. 2. Hi. After clearing the fallen leaves, keep 3-5 full shoots of the seedlings in the shed. 3. Button shed. Immediately after the flat buckling, the shed was covered with a plastic film and a straw curtain. 4. Sleep. When the outdoor temperature falls below 7°C during the daytime, it begins to sleep, and the sleeping amount is about 500 hours, and the time is about 20 days. 5. Temperature management. The temperature during the first week after warming was 20°C during the day and 10°C during the night. The temperature during the second week after warming is 25°C during the day and 12°C during the night. The temperature is 30°C during the third week after warming and the nighttime temperature is 12°C-15°C until harvested. During the growing period, the temperature during the day is lower than 20°C. To warm up, the method is to use an electric heater to hang it on the back wall and turn on the power. The temperature exceeds 30°C and the power is turned off. The number of heaters is 15 meters long in the greenhouse to install one. 6. Moisture management. After emergence, no watering is needed during the summer, and the water is drained in time if it is rainy. Before the dormancy, a large amount of water was applied in combination with fertilization before sleeping. Afterwards, the soil moisture in the shed was watered and it was not poured. 7. Fertilization. If it is a kind of vegetable greenhouse, it can be planted with scented oysters. The entire seedling stage can be used without fertilizer. The original fertility in the greenhouse is sufficient for the seedling growth of Toona sinensis for fertility needs. If it is a new greenhouse, it should be 50 kg of Sanyuan compound fertilizer when the seedlings grow to a height of 20 cm after the seedlings. In addition, before the dormancy after the shed, it is necessary to apply ternary compound fertilizer 50-100 kg. Both fertilization were applied by ditching. Fourth, harvest There are no uniform standards and methods for harvesting the citrons and they can be harvested at any time according to market demand. When harvesting, the entire scented stalk buds are hand-slipped, and large shoots are taken. No small shoots are taken. If only single shoots germinate, and it is already large enough, it must be picked from the base to promote the germination of the lower buds.
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