High yield techniques of cut rose in winter

Winter is the season with a large gap in cut rose in the northern region, and the price of cut flowers is also higher in this season. Therefore, to increase the winter yield of cut rose is very important to increase the income of cut rose throughout the year. This paper introduces a set of high yield technology of cut rose in solar greenhouse: 1. ensure room temperature and ground temperature

First of all, a reasonable greenhouse structure is adopted to ensure that the greenhouse absorbs solar energy to the maximum, and the indoor temperature is increased so that the room temperature can be kept at about 25 ℃ in the daytime, and the maximum can not exceed 28 ℃. Second, the use of mat, straw mat, thermal insulation quilt or paper cover to reduce heat consumption. Third, heating measures should be taken to increase the night temperature of the greenhouse to ensure that the night temperature is 15.5 ℃ ~ 16.5 ℃. Fourth, dig cold-proof ditch, ditch filled with wheat straw, rice straw, etc., covered with soil, play the role of thermal insulation. 2. increase the light intensity in the northern region in winter, and the rose is a light-loving plant, so it is necessary to do everything possible to increase the light to promote the growth of the rose. First, choose the drip-free film with good light transmittance and keep the greenhouse film clean to enhance the light transmittance. Second, the use of reflective film, spread in the ground between the ridges, affixed to the wall behind the greenhouse, in order to improve the light intensity. The third is to use artificial light source to supplement the lack of light in winter. 3. To ensure the supply of fertilizer and water, fertilizers should be applied once every two or three weeks, organic fertilizer and chemical fertilizer should be used alternately, and the ratio of N, P and K should be kept at 1 ∶ 1 ∶ 2. Combined with foliar fertilization, Yemanbao, urea, potassium dihydrogen phosphate and various trace elements should be sprayed. In addition, carbon dioxide generator is used to produce carbon dioxide in closed greenhouse, which makes the concentration of carbon dioxide reach 1000 mg / kg ~ 2000 mg / kg, which can obviously increase production and improve the quality of cut flowers. Cut rose requires relative humidity in the greenhouse to be kept between 65% and 70%, so watering times should be reduced appropriately. It is generally watered with fertilization. 4. Folding branches combined with pruning and bending weak branches can reduce nutrient consumption, increase the accumulation of organic matter, and maintain the yield and quality of cut flowers. The growth of cut rose in winter is small, so it should be cut lightly. 5. Control of diseases and insect pests of cut rose in winter are mainly powdery mildew, aphids, whitefly and red spider. The control of powdery mildew can be sprayed with 15% Fenning 500 times or 42% Fenbiqing 300 times 400 times. It is best to use chlorothalonil fumigant before the disease, or use sulfur fumigator to kill bacteria in the air in the shed, so as to achieve the purpose of preventing and controlling powdery mildew, so as to ensure the cleanliness of cut rose leaves and improve the quality of cut flowers. The control of aphids and whitefly should be sprayed with 1000-1500 times liquid of 20% good winter or 1000 times liquid of 5% aphid lice net. The control of red spiders was sprayed with 40% dicofol 1000 / 1500 times or 1.8% Ji Qi mite 1500 / 2000 times.