Pollination and pollination management of pear trees in spring

The management of post flowering pear trees is the key period of the whole year management. Whether the comprehensive treatment measures are appropriate in this period will directly affect the fruit setting rate and fruit quality. This is the main point of pear tree management:
First, pollination
Pear open in the early morning after 8 days, the day of open flowers can be pollinated, flowers bloom for 1 to 2 days, the best pollination, fruit pollination rate is very low on the third day. The open flower, anther is pink, second rim of some anthers due to rupture of the powder, became dark brown, almost all the third days of anther become dark brown, on this flower, because of wilting discoloration, no stigma pollination.
1, the introduction of bee pollination: suitable for pollination trees accounted for more than 20% of the whole garden uniform configuration of the orchard, flowering before the introduction of bees, generally a box of bees per mu of land to 10.
2, the tank will hang pollination: pollination varieties xuehuali pear cut branches, inserted in the bottle, hanging in the upper part of the main varieties of pear tree, every 2 ~ 3, the better the effect of more branches.
In two, the flower of boron
In the flowering period of spray 350 ~ 400 times the borax solution plus gibberellin ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ 15, can improve the fruit setting rate of 25% ~ 30%, before or after the morning of 10 in the morning after the effect of better than 4.
Three, thinning
Because a week after falling, will be part of small fruit, fruit, fruit thinning all axillary deformity; then according to the distance of fruit, pear by 20 centimeters a fruit, Sydney in 30 ~ 35 cm a fruit; finally in May 20th before the completion of the selection, a big, fruit shape correct, position good pear leave, excess thinning out. Fruit, pear trees 2/3 double fruits, 1/3 fruit; peripheral in the upper part of double fruits, the fruit. Sydney all leave a single fruit, when the amount of fruit in the small part of the double fruit. Fruit tree in general, should pay attention to in order to stay, stay 1 to 2 order pear fruit, Sydney second order fruit.
Four, fruit bagging
After thinning in late April to early May for. Bagging before spraying bactericide, with pyrethroid insecticides 2000 times mildothane 1500 times as well as the spraying liquid, with bagging. The fruit bag can choose 50 grams of single black bag. In the long term storage available 40 grams of black bag. After the fruit with wire clip. Water management should be strengthened after bagging.
Five, pest control
After the flower is a variety of pest breeding, the peak, quantity and concentration, are mainly pear scab, canker, pear Psylla, Janus Piri and other pests. At 1 weeks after the available mildothane 1000 times and 1500 times the peach heart net snacks first control; two weeks after the prevention of scab available NuStar 8000 times or 2000 times with domestic diniconazole insecticidal star 2000 times liquid with 1500 ~ 2000 times second times a mite control.

Previous：How to protect the apple and how to protect the fruit!         Next：Artificial pollination technique of apple tree