One is spraying boron during flowering. Spraying boron during flowering can effectively increase the fruit setting rate. Generally, 0.3-0.5% borax is sprayed once in the early stage of blooming.
The second is artificial pollination. Artificial pollination can improve the pollination rate of fruit trees, and the effect is very obvious.
The third is to pay attention to thinning flowers and fruits. Flower thinning and fruit thinning is to adjust the number of trees with dense flowers and fruits to make the load appropriate. For fruit trees with many flowers, many fruits, and high fruit-setting rate, the inflorescences should be thinned if the clusters of flowers are too dense; the varieties with high fruit-setting rates are more sparse, and the fruit tree varieties with less fruit-setting rates are less sparse; generally, each fruit branch has two fruits. Keep a single fruit in bagging.
Fourth, spray urea after flowering. Fruit trees consume a large amount of nutrients stored on the tree due to flowering, young fruit growth, and new shoot root and leaf growth. Nutrients need to be supplemented in time to reduce physiological fruit drop and increase yield. Generally, 0.5% urea is sprayed once about 10 days after flowering. , It has obvious effect on promoting the growth of branches and leaves and reducing the second physiological fruit drop.
The fifth is the ring peeling of the auxiliary branches. Ring peeling of auxiliary branches also has a better effect on reducing flower and fruit drop, but pay attention to girdling due to trees. Mainly gird on the flowered auxiliary branches, and the peeling opening should not be too wide, and the thickness of the branch should be 1/8 to 1/10.
For saplings that have not formed flowers, girdling is also an effective measure to promote flowers and should be carried out before flowering. For the purpose of flower formation, it can be carried out before the new shoots stop growing.
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