"A good knife is used on the blade"! Kiwifruit work in May
1. Full pollination.
Due to the influence of weather factors, this year's flowering may be ahead of time, should be prepared in advance.
Pollination time:generally, female flowers can be pollinated within 5 days after opening, but the best pollination effect is 1-2 days after opening.
Pollination of flowers:pick the newly opened male flowers at 7-10 in the morning, put the petals on the plate upward, and gently smear the stamens of male flowers on the stigma of female flowers. Each male flower can give 5-6 female flowers.
Insect assisted pollination:black bee, wall bee and bee pollination were kept in orchard during flowering period.
Collect pollen or buy commercial pollen for pollination:collect the male flowers about to open or half open, brush the anthers, cover the anthers with a layer of newspaper, heat them in the sun or on a hot Kang with low temperature until the anthers crack, then sieve out the pollen with a small basket, put them into a clean glass bottle, and store them in a low temperature and dry place for use.
If the amount of self provided pollen is insufficient, or it is difficult to collect it in rainy days, commercial pollen can be purchased for artificial pollination.
Simple pollinator (needle tube, Wahaha bottle, etc.) or electric pollinator can be used; If the collected pollen or purchased commercial powder can not be used up at one time, it can be stored for 1-2 days at room temperature, 7-10 days in 5 ℃ refrigerator and 1-2 years in - 20 ℃ sealed container.
In the full fruiting stage, the vigorous developing branches or fruiting branches in the crown are selected as the fruiting branches in the next year, and they are usually pinched when the growth is weakened or twining occurs, and the secondary branches are wiped off or two leaves are left for pinching; Leave 3-4 leaves on the bud of the other fruiting branches to pick the heart.
The orchard suffering from severe late frost damage, due to no yield, new shoots will appear vigorous growth, should be timely removed redundant branches, summer pruning, to prevent shade.
3. Flower thinning and fruit thinning.
After flowering, the abnormal flowers and the female flowers that opened too late were removed, and the abnormal fruits, diseased fruits, small fruits and fruits with poor pollination were removed after two weeks of flowering.
4. High connected tree management.
In addition to the grafted buds, 2-3 leaves of other sprouts should be removed or removed in time. When the grafted buds germinate and grow 5-6 leaves, they are pinched and tied.
If the tree is not grafted, it is necessary to select suitable developing branches, leave 7-8 leaves on them to pick the heart, and then make up the grafts later.
5. Pest control.
Focus on the prevention and control of scarab, Chrysopa maculata, stinkbug, small salamander, flower rot and brown spot. Pyrethroid insecticides such as 2.5% beta cyhalothrin can be used as insecticide, and Junduqing can be used as bactericide.