Peach Tree manages 4 issues in spring
The quality of Taoyuan's spring management directly determines the output and quality of peach fruit in the year, and will also have a greater impact on the production of the following year. Therefore, in the spring management, we must pay special attention to the following tasks. First, the complex shear and the Qingyuan Garden began to make a cut before the germination in early March. The main cut off the dead branches and blind sticks left over from the winter pruning, and appropriately remove the oversized branches left by the winter pruning according to the amount of branches left and the yield reserved. . Strip off the buds on the back of the branch and the buds next to the big wound. Trimming young trees should be light, the results of the use of long-pruning pruning branches, lateral branch angle to pull branches. Thoroughly clean the garden immediately after pruning. First use a knife or a wire brush to scrape off the chapped skin on the trunk. Together with the pruned branches and the branches and leaves in the garden, bring them out of the park and burn them out. Second, fertilization and watering In March-March peach trees have entered the bud, flowering fruit set and shoot growth period, in order to meet the growth of tree shoots and young fruit development needs of nutrients, top dressing is particularly important before flowering, especially for growth potential A weaker result tree or Taoyuan with a high output last year is conducive to neat and consistent flower opening, and increased fruit set and early shoot growth. Appropriate application of nitrogen fertilizer before flowering can promote fruit set and tree growth, but should pay attention to the amount, so as not to cause new shoots long, increase the fruit drop. Water immediately after dressing. Fertilizer dressing methods can be applied by ditching, acupuncture, applying, radial or circular application, and can also be applied in combination with watering. III. Thinning and Thinning Fruits Currently, thinning of buds is mainly performed with pre-flowering shears and varieties with high fruit setting rate (Chunyan, Okubo, Nectarine, etc.). The degree of sparseness should be based on tree vigor, fruit branch retention, and early spring weather conditions. Generally, short, medium, and long fruiting branches will leave 2, 3, and 4 buds respectively, and leggy branches will leave 5-6 buds. Fruit thinning time, shortly after flowering, when the young fruit can be divided into the size of the fruit for the first time the fruit thinning, high fruit set rate can be sparse early, low fruit set and unstable varieties to late sparse. The amount of fruit left should be taken into consideration based on factors such as age, species, size of tree crown, growth potential, supply conditions of fertilizers and water, production volume in the previous year, and the number of flowers in the current year. Saplings 30-40 cm fruit branches generally stay 3-4 fruit, 20-30 cm fruit branches left 2-3 fruit, 20 cm below the fruit branches to stay 1-2 fruit. In the full fruit period, 3, 2, and 1 fruit were left in the long, medium, and short-leaf clumps, 2 fruit were in the long fruit branch of the old tree, 1 fruit was in the middle fruit branch, and fruit was absent in the short fruit branch and the leaf branch. IV. Pest control Before and after germination and before and after flowering, it is a critical period for the prevention and control of peach pests and diseases. In particular, the use of pesticides before the germination of peach trees is the most important. In the middle and late March (before germination), the whole park will be sprayed with 4-5 Baume degrees of lime sulfur, or 45% of crystal lime sulfur 30 times, and the spraying shall be carefully and uniformly. In Taoyuan, where the disease occurred more seriously in the previous year, a 1:2:120-fold Bordeaux mixture could be sprayed before flowering. However, the lime-spraying agent should be sprayed more than 12 days apart. At the beginning of April (before peach blossom), if aphids are found, they can be treated with 10% imidacloprid 2000 times solution; anthrax can be controlled with 80% anthraquinone and 500 times the amount of anthrax; brown rot can be used with 70% dexamethasone 500 times or 50% speed Keling 1000-1500 times liquid prevention; flow gum disease can be used to scrape broken porcelain tile lesions, and brushing 30 times liquid bacteria poison clear. In mid-to late April, after the peaches were cut into flowers, artificial leaves were removed from the leaves and the overwintering larvae such as the red necked calf were killed, or the wormholes were plugged with a wet cotton swab soaked with 50% dichlorvos. Can be sprayed with mancozeb 600 times solution or 70% thiophanate methide 1000 times + agricultural streptomycin 2000 times + 10% imidacloprid 2000 times + 20% cypermethrin 2000 times, once every 10 days The main prevention and treatment of leaf shingle disease, bacterial and fungal perforation, brown rot, aphids, pears, longhorn and scale insects.
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