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How to prevent freezing of pear tree flowering?

Spring cold and frost are very harmful to pear trees. Generally, pear trees encounter -4.0 °C in the flower bud stage and -2.3 °C ~ -2.9 °C in the flowering stage, which lasts for more than half an hour, and the flower organs are subject to freezing damage. After being frozen, the pear tree is usually characterized by poor pollination, dry head death, filaments or ovary browning. To prevent freezing damage during the flowering period of pear trees, the following measures should be taken:

1. The trunk of the early spring is painted white. In the early spring, the main tree is white coated with self-adapting whitening agent, which can effectively reduce the absorption of solar heat, delay germination and flowering, and have the functions of preventing cold and freezing, preventing the pests from spawning. The preparation method of the whitening agent is: 5 kg of quicklime, 0.5 kg of sulfur powder, 1.5 kg of salt, 0.1 kg of vegetable oil, 0.5 kg of flour, and 15 kg of water. In the preparation, the lime and salt are separately heated with hot water, stirred into a paste, and then sulfur powder, vegetable oil and flour are added, and finally the water is added and stirred.

2. Watering before flowering, spraying water during flowering. Watering in the spring 10 days before flowering of pear trees can significantly reduce ground temperature and delay germination. After germination and then watering for 1 or 2 times before flowering, it is generally possible to delay flowering for 3-4 days. The irrigation can increase the ground temperature before the cold spring, which can prevent and reduce the freezing damage. At the time of the arrival of the frost, the water spray method is used to improve the local microclimate, increase the temperature, and prevent freezing.

3. The fumigation method. In the flowering period of pear trees, the smoke method can be used to prevent frost, and the effect is very good.

4. The orchard puts bees. The bee colony was introduced 3 to 4 days before the flowering period of the pear tree, and a box of bees was placed in 4 to 5 mu.

5. Spray antifreeze for fruit trees. Spray the fruit tree antifreeze 1 to 2 days before the arrival of the cold and night cream. Spraying 0.4% potassium dihydrogen phosphate and 0.2% borax solution on the fruit tree can enhance the cold resistance of the flower, reduce the cold and damage, and increase the fruit setting rate.

6. Ignite anti-freeze candles. This method is similar to the fumigation method, but it is more effective than the fumigation method. The smoke method lasts for a short time, which does not work at night. Once the vineyards antifrost candle is ignited, it can continue to burn for more than 8 hours. These anti-freeze candles have been measured by our QC team and customer feedback is real. We are a professional orchards anti freeze candles factory, our customers come from all over the world, and we have gained the trust of more and more customers, they buy bulk anti-freeze candles from our factory every year.

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TaBo Candles Factory
Add: 1708 B Lecheng, Qiaoxi area 050000 Shijiazhuang, Hebei, China.
Tel: +86-311-67909825  
Fax: +86-311-67909064
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