The causes and preventive measures of the latest Shatian pomelo only blooming and not bearing fruit

In the growth process of Shatian pomelo, farmers often encounter the problem of only blooming but not fruiting, which causes great losses to farmers, so what is the reason that Shatian pomelo only blossoms but does not bear fruit? What measures should farmers take to prevent it? Let's get to know it with the editor.

1. Lack of pollination trees

The seed setting rate of self-pollination of Shatian pomelo is low, if there is a lack of pollination trees, then there will be a number of flowers, but the seed setting rate is very low, so cross-pollination can significantly improve the fruit setting rate. Therefore, pomelo varieties with strong pollen quantity, strong pollen vitality and similar flowering period to Shatian pomelo should be selected as pollination plants, so that the proportion of pollinated trees in the whole garden can reach about 10% to 15%. In addition, artificial pollination can also significantly improve the fruit setting rate of Shatian pomelo, but it is more tedious, or raising bees in the pomelo orchard during flowering can also promote pollination and significantly increase the fruit setting rate.

2. Bad climate in florescence

In the case of continuous rainy or low-temperature weather, or dry orchard soil or dry air, Shatian pomelo will slowly return to normal growth when the temperature picks up after a long period of low-temperature and dry weather in winter. at this time, it is necessary to apply fully mature farm manure, dilute it into thin water and fertilizer, and avoid too high concentration, causing root damage and affecting the germination of new roots. In addition, quick-acting nitrogen fertilizer should also be strictly controlled, especially fruit trees and overgrown trees.

3. Suffer from diseases and insect pests during flowering

Shatian pomelo suffered from bud maggots, beetles and other pests before flowering, if the control is not thorough, it will seriously affect fruit setting. Therefore, it is necessary to strengthen the prevention and control of bud maggots and beetles during flowering. The prevention and control of flower bud maggots should be immediately sprinkled on the ground and sprayed on the tree crown after loosening the soil around the tree plate. Carbaryl powder or phoxim can be used for ground spraying, and pyrethroid pesticides can be used for crown spraying. Or mulching with plastic film before the emergence of adults, so that the adults of flower bud maggots can not fly out of the ground and die in the ground. Beetles are harmful during flowering, and flowers secrete nectar and fragrance substances, which often cause harm to beetles. Beetles can be sprayed before flowering or caught artificially during flowering.

4. Improper management of fertilizer and water.

Fertilization will also affect the fruit setting rate, fertilization should be a combination of soil fertilization and foliar fertilization, generally using ditch, hole or radial fertilization, the fertilizer and topsoil will be mixed and applied in layers, and the soil will be covered after fertilization. When the plant is deficient in trace elements such as boron and magnesium, it can be supplemented by spraying foliar fertilizer. It should be noted that the organic fertilizer should be fully mature and should be layered and mixed with the soil in order to improve the fertilizer efficiency and avoid burning the roots.

The above is the reason why Shatian pomelo only blossoms and does not bear fruit and the preventive measures are introduced. I hope I can help you. If you want to know more about it, please follow us.