Orangery tube after fruit harvest

In the annual growth cycle, adult citrus trees experience flower bud differentiation, flowering, fruit setting, physiological fruit drop, fruit expansion, three times of shoot and branch growth, and three root group growth peaks, which consume a lot of energy and nutrients and seriously weaken the tree potential. and all kinds of diseases and insect pests are concentrated in them, which brings a lot of disadvantages to the next annual growth and fruit of citrus trees. Therefore, strengthening the cultivation tube of the orange orchard after fruit harvest and quickly restoring the tree potential are of vital significance to the citrus production next year. The author believes that the cultivation and management of orange orchards after fruit harvest should focus on the following technical measures:

Spray foliar fertilizer in time. Spraying foliar fertilizer in time after fruit harvest is a reform in the application method of traditional fruit picking fertilizer. Compared with rhizosphere fertilization, it has the characteristics of quick application, less waste, lower cost, quick effect and so on. This can not only quickly supplement tree nutrients, avoid deciduous surface, quickly restore tree potential, but also promote flower bud differentiation and enhance tree cold resistance. At present, there are many kinds of foliar fertilizer suitable for spraying after fruit harvest, but the effect of compound and organic foliar fertilizer is the best. It should be noted that the concentration of fertilizer sprayed on the leaf should be controlled at about 0.2%, not more than 0.3%, and should be sprayed in time after fruit picking.

Apply overwintering fertilizer as soon as possible. Overwintering is the nutrient basis of citrus growth in spring, so this fertilization is also called "base fertilizer" in citrus production. The amount of fertilizer applied should depend on the strength of the tree, apply organic-inorganic compound fertilizer 70 Mu 100 kg per mu, and try to finish applying it before the middle of November. Conditional orange farmers can dig the whole garden after sprinkling fertilizer, and orange farmers with labor shortage can dig circular trenches under the crown dripping line.

Do a good job in clearing the garden in winter. Clearing the garden in winter is the most effective way to reduce the overwintering base of diseases and pests and control the population of pests. In winter, the clear garden includes three contents: picking up and burying the fallen fruit in the garden, cutting off the dead branches of diseases and insect pests and taking them out of the garden and burning them, and spraying the crown of the garden. Picking up and burying the fruit deeply (about 1 meter) in the garden is an important measure to control the population of pests that damage citrus fruit, and this work should be carried out as soon as possible after fruit picking. After the disease and insect withered branches were cut, stone-sulfur mixture or sodium oleate was sprayed on the crown immediately.