How to raise cut rose in winter in order to produce a high yield
Winter is the season with a large gap in cut rose, especially in the north. If there are fewer rose flowers, the price of cut flowers will also increase. So how can the winter cut rose be fruitful? What are the techniques for cultivating winter rose flowers? here are the flowers and plants to share with you:
First, do a good job of heat preservation measures to improve the room temperature and ground temperature of the greenhouse
It is necessary to adopt a reasonable greenhouse structure to ensure that the greenhouse can absorb solar energy to the maximum, increase the indoor temperature, keep the room temperature at about 25 ℃ during the day, and the maximum can not exceed 28 ℃, and cover the greenhouse with mats, straw mats, thermal insulation quilts or paper to reduce heat consumption. Finally, heating measures should be taken to dig cold ditches. The ditch is filled with organic matter such as wheat straw and rice straw and covered with soil to increase the night temperature of the greenhouse. Only when the night temperature is about 15 degrees can the normal flower yield of cut rose be maintained.
Second, increase the light to promote the growth of rose
In winter, the light intensity in the northern region is weak, and the rose is a light-loving plant. Therefore, we should do everything possible to increase the light and 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 ridge or affixed to the back wall of 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.
Fertilization and proper watering
Fertilizer is usually applied once every 2 to 3 weeks, and organic fertilizer and chemical fertilizer should be used alternately. Due to low winter temperature and plastic film mulching, evaporation and transpiration are reduced, while cut rose requires that the relative humidity in the greenhouse should be kept between 65% and 70%, so watering times should be reduced appropriately. It is generally watered with fertilization.
Fourth, break branches and combine pruning
Bending weak branches and blind branches can reduce the consumption of nutrients, increase the accumulation of organic matter, and keep the yield and quality of cut rose stable. One-time pruning method can also be used to increase the amount of cut rose flowers in a certain crop, focusing on ensuring the supply of cut flowers before the festival.
Prevention and control of diseases and insect pests
The main diseases and insect pests of cut rose in winter are powdery mildew, aphids, whitefly, red spider and so on. 1) the method of prevention and treatment of powdery mildew is to spray 1000 Mel 2000 times trimethoprim solution or 70% methyl thiophanate 1000 Mel 1500 times during the onset of the disease. Regular inspection, found that diseased branches and leaves immediately cut off and burned. Control watering. Apply less nitrogen fertilizer and prune carefully to make the inner chamber of the crown well ventilated and transparent.
Time: 2019-04-29 Click:
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