Master the correct pollination method to improve the fruit setting rate of apricot trees in greenhouse

Many apricot growers in the greenhouse reported that they had artificially pollinated their apricot trees in early spring, but the fruit setting rate of apricot trees was still not high. It is very likely that the fruit growers made a mistake at some point in pollination. Today, the editor of the Green Food Network summarizes three points that fruit farmers should pay attention to when pollinating apricot trees in the greenhouse:

Apricot tree

Pollen collection

Two to four days before artificial pollination, buds with budding and normal development were collected from selected varieties with high pollination affinity, or the flower branches of pollination trees were cut and inserted into water bottles for water culture. Peel the petals of the collected buds indoors with tweezers, take out the anthers, spread them on smooth and neat paper, place them in the room at room temperature of 20-25 ℃, and dry at 30%-70% humidity. When the anther on the paper is cracked, the pollen can be released; when the anther is ripe, put a piece of white paper under the water bottle and gently pat the flower branch to let the pollen fall on the paper. After collecting the pollen, sift out the sundries, store them in the bottle, and put the bottle in a ventilated and dry place. The number of buds or branches collected can be determined according to the number of pollinated flowers, the amount of pollinated flowers or varieties. Due to the small amount of apricot pollen, generally one bud can pollinate three flowers.

Pollination period

The pollination of the whole apricot tree is generally when there are about 25% of the flowers blooming, and when the stigma of the apricot flower has a lot of mucus and bright color, the best pollination time is the morning of the blooming day, no water droplets, the stigma is fresh and wet, and the pollination fruit setting rate is also high.

Pollination method

1. Point teaching method: add 3 to 5 times talc or starch to the collected pollen, mix well, dip a small amount of pollen with a brush or soft rubber head and gently wipe it on the stigma. 10-25 flowers can be dipped in pollen each time. The key is to comprehensively teach the plants with a small number of flowers, early blooming flowers and late blooming flowers in order to improve the fruit setting rate and ensure the yield.

two。 Spray method: take the collected dry pollen 10g to 12g, add 5kg of water, 250g of white granulated sugar and mix to prepare the suspension. Add 5 grams of boric acid to the spare solution before spraying, stir well and spray immediately with a hand-held sprayer. Spray once or twice when 60% of the flowers are in bloom. The whole apricot tree is required to be sprayed evenly, do not miss spray, and do not re-spray many times.