Artificial clear garden fruit trees before germination before clearing the garden can effectively eliminate a variety of overwintering worms, eggs and pathogens, reduce the source of disease and insect infestation, and reduce the overwintering base number of pests and diseases. After convulsions, combined with cutting in the early spring, the trunks at the roots and necks of the trunks were lifted for overwintering, the overwintering pests on the branches were removed, and the diseased debris such as litter, weeds, and fruit droppings in the orchard were cleared and buried deeply or burned. .
After the soil is thawed, the soil is managed by turning the tree tray 10-20 cm shallowly and 30-50 cm deep between rows. In addition to curing the loose soil, improving the physical and chemical properties of the soil, and improving soil moisture retention, the soil can be hidden under the canopy. Layers, earthworms, wintering earthworms, beetles, golden needleworms, ground tigers and other underground pests plucked out of the ground to dry, frozen to death, or eaten by birds, have a greater effect on reducing the source of diseases and pests of the year.
In early spring, germination, flowering, and new shoot growth require a lot of nutrient supply. In order to ensure the sprouting of new shoots and the growth of new shoots, budding fertilizer should be applied. If fertilizer is not applied in early spring, it will lead to poor growth of branches and serious fruit drop, which will affect fruit yield and quality. Therefore, based on the basal fertility in autumn last year, according to the characteristics of the required fertilizer in the fruit phenophase, a quick-acting fertilizer based on nitrogen fertilizer is applied before the bud to supplement the consumption of buds, flowering, fruit setting and new shoot formation. Nutrients. The amount of topdressing varies with soil, tree vigor, age, and yield. Before flowering, apples, pears, peaches and grapes should be top-dressed in the flowering period of persimmon trees and walnuts. Applying 1 kilogram of nitrogen fertilizer, 0.5 kilogram of phosphate fertilizer and 0.6 kilogram of potassium fertilizer per 100 kilograms of fruit should be suitable. After the leaves are fully developed, the top dressing can be performed with 0.3% urea solution or 0.3% potassium dihydrogen phosphate solution. The lobular disease orchard can be mixed with 0.2% to 0.4% zinc sulfate solution.
The early spring of pesticide spraying is the key period for the prevention and control of fruit and tree diseases and pests, with the emphasis on eradicating overwintering pests and preventing trunk diseases. Before germination, the tree trunks, in particular, the tree trunk spray shovel remover, such as 3 to 5 Baume degrees lime sulfur. After spraying phoxim, cypermethrin, thiophanate-methyl, mancozeb, and other insecticides on the ground, the soil is smashed and then sprayed again. This can kill insects, eggs, and germs, effectively controlling wintering and unearthed pests. , to reduce the degree of harm in the orchard pests and diseases that year.
Pouring early spring fruit trees before and after flowering, the need for large amounts of water. From mid-to late March to mid-April, the germination water is poured once in combination with topdressing. Watering before flowering is beneficial to flowering of fruit trees, growth of new branches and fruit setting. Watering after fetching flowers can relieve the growth of new shoots and compete for moisture in young fruit, avoiding a lot of fruit drop. After water infiltration, the sapling tree trays are covered with film on both sides of the tree in a timely manner, which can play a role in increasing the temperature of the ground, protecting the lotus root, and promoting the coordinated growth of the fruit trees above and below the ground.
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