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Detailed Explanation of Key Techniques for Flower and Fruit Preservation in Kernel Apricots

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1. Pre-bloom irrigation: Irrigate about 10 days before the apricot blooms. This can lower the ground temperature, increase air humidity, and delay blooming by 3-4 days, which helps avoid damage from late frost. 2. Frost prevention during the blooming period: During the blooming period, special attention should be paid to frost forecasts. When frost is forecast, smoke methods should be promptly used to prevent frost damage, that is, before the frost occurs, light the previously prepared straw, fallen leaves and other debris so that smoke covers the entire apricot orchard, and the temperature can be raised by about 2°C. Smoke agents can also be used, with a formula of 20% ammonium nitrate, 15% waste diesel oil, 15%

1. Pre-bloom irrigation: Irrigate about 10 days before the apricot blooms. This can lower the ground temperature, increase air humidity, and delay blooming by 3-4 days, which helps avoid damage from late frost.

2. Frost prevention during the blooming period: During the blooming period, special attention should be paid to frost forecasts. When frost is forecast, smoke methods should be promptly used to prevent frost damage, that is, before the frost occurs, light the previously prepared straw, fallen leaves and other debris so that smoke covers the entire apricot orchard, and the temperature can be raised by about 2°C. Smoke agents can also be used, with a formula of 20% ammonium nitrate, 15% waste diesel oil, 15% coal dust and 50% sawdust or grain chaff, grass powder, dry horse manure, etc., stirred evenly, packed into kraft paper bags, compacted, and sealed. Each bag holds 1.5 kg, can produce smoke for 10-15 minutes, and covers an area of 2,000-2,700 sq m.

3. Artificial pollination and bee release: During the blooming period, artificially applying mixed pollen from multiple apricot varieties by hand, or releasing horned mason bees, @#@255@#@, etc., can significantly increase the fruit-setting rate.

4. Spraying water or boron during the blooming period: In spring, the atmosphere is dry, and the stickiness of the apricot stigma is poor, which is unfavorable for pollination. Spraying water or boron (0.1%-0.3%) helps pollen adhere and germinate, and can increase the fruit-setting rate.

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