Because garland chrysanthemum has the characteristics of low temperature resistance, coolness, light tolerance, low light saturation point, and low photosynthetic intensity, it is not only feasible to use garland chrysanthemum in the greenhouse in autumn and winter seasons, but also can be listed during the Spring Festival, greatly improving the economy. benefit. The cultivation points are as follows: First, the time in the northern region in the early October to mid-November, listed during the Spring Festival. Second, the selection of species should use strong cold resistance, comparative disease resistance, good quality, high yield varieties. Third, sowing and sowing when the removal of the former plant in the greenhouse stubble, soil preparation, Mushi farmyard fertilizer 3000-4000 kg, turning the ground 15-20 cm deep, semi-high sorghum, is conducive to increase soil temperature, the width of 1-1.2 meters , The width of the surface is 0.8-1 meters, the height is 8-10 centimeters, the amplitude is 7-8 centimeters, the cover soil is 1.5 centimeters after sowing, and the sowing amount is 2500-3000 grams. The seedlings will emerge 6-7 days after sowing. Fourth, strengthen the management after the emergence of management, the early temperature is relatively high, late temperature is low, the temperature is controlled at 17-20 degrees, more than 28 degrees release the wind, because more than 30 degrees unfavorable to growth, then, photosynthesis decline or stop, growth is affected Impact, thin leaves, increased fiber, poor quality. The minimum temperature should be controlled above 12 degrees. Below this temperature, it is necessary to pay attention to cold protection and increase the cold protection facilities so as to avoid freezing damage or freezing. Since it is in the cold season, it is generally not watered, promotes deep rooting, and has high humidity and low temperature, and is prone to damping-off. When 8-10 leaves are grown, the first water is selected to be poured in sunny and warm weather, and the fertilizer is chased once in combination with water, and 15-20 kg of ammonium sulfate is chased by Mu. During the growing period, it is watered 2-3 times and watered in sunny and warm weather in the morning. The amount of water should not be too large, and the humidity should be controlled below 95%. If the humidity is high, sunny days should be selected to release the humidity at noon to prevent the occurrence of diseases. Artemisia selengensis grows in the greenhouse. Due to weak light, low temperature and high humidity, it is prone to damping-off, leaf blight and downy mildew.
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