First, the prevention of kiwi freeze damage:
1. Pre-emergence irrigation: Before fertilization, fertilize the entire garden with fertilization. According to the test, after 10 days of irrigation, the ground temperature can be reduced by 3 to 4 degrees, and germination can be delayed for 2 to 3 days to avoid the damage caused by the “cold winter†frost. The moisture of the orchard ground can also increase the temperature of the orchard by 2 to 3 degrees by evaporating and absorbing heat.
2, set up smoke stack: concentrically connected, set up smoke pile, every 10 to 15 meters with damp wheat straw, straw, saw foam and other materials, per mu of orchard not less than 20 heap, can also be purchased for sale The use of smoking materials to concentrate the lighting of smoke stacks or smoking materials before the temperature is lowered from 3:00 to 4:00 can effectively increase the orchard temperature by 2-3 degrees.
3, cooling spray: In the strong cooling in the orchard with a motor sprayer or mist sprayer on the fruit trees to spray the entire park, play the role of water molecules to absorb cold and heat, increase the temperature, ease the freezing injury.
4, drug control: 7 to 10 days before budding with Bi-care 15000 times plus chlorfenone 400 times spraying prevention, prevention of "cold winter" frost damage and ulcer disease.
Second, kiwifruit bacterial ulcer prevention and treatment:
1. Pre-emergence control: For orchard with severe disease, 20 days before germination, 5 Baume degrees of lime sulphur can be used for prevention and treatment, the incidence of lighter orchards, 70% to 10 days before germination, Biying 15000 times plus 20% thidiaphenone 500 times control.
2. Local applicator: For patients with ulcers on the trunk, apply 100 times the peracetic acid, 20 times the copper thiazolyl, 20 times the copper acetate, 20 times the copper hydroxide, and disinfect the knife before the application. Scrape pus and pyometra lesions and apply the above solution directly.
3, clear the pathogen: 1 scrape off the bacteria pus and diseased skin, to bring out the orchard burned or buried in time; 2 on the various branches have been sick, cut off in a timely manner, brought out of the orchard burned or buried. 3 is to use a 75% alcohol or 10 Baume degrees lime sulfur disinfectant before and after each use of the pruning tool.
Third, kiwifruit bacterial flower rot control:
The prevention of bacterial flower rot during the flower bud separation period before flowering to the flowering of kiwifruit can be controlled by 15,000 times plus 20% thiopentelone 600 times or 33% quinolinone 800 times, and the flower buds are separated until flowering before adding 15000 Double and bactericidal agents are sprayed twice every 7 to 10 days.
Fourth, standardize the construction of Kiwifruit Park:
1. Selection of disease-resistant varieties: Xu Xiang, Hayward, Jinkui, Huayou and other good varieties with good performance should be selected.
2. Choose robust and sterile seedlings to build the garden: The scions should be collected on a robust tree in an orchard with no history of disease, and the cutters should be strictly disinfected when grafted to prevent infection. When planting a garden, it is best to dig planting trenches and choose healthy, disease-free and strong seedlings to plant.
3. The spacing of the rows should be standardized: all the scaffolds should be pushed and the row spacing should be set at 34 meters. 55 trees should be planted per acre, and the male and female plants should be equipped with 6:1.
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