High-yielding Cultivation Techniques of Plastic Film
Choose the best species to choose the high yield, disease resistance, strong growth, strong cold resistance, high convulsions rate, resistant to storage, suitable for autumnal white garlic varieties. Such as Shandong garlic, Yongnian white garlic and other fine varieties.
Appropriate sowing garlic should be planted in due time, with low seedling emergence rate, and easy to appear complexion garlic; too late planting period before the short growing period, the seedlings are too small, susceptible to freezing damage, and affect the garlic yield and quality. In order to ensure that the number of leaves of the garlic plant before the winter reaches 4 to 5 leaves, suitable sowing dates for garlic in the middle and southern regions of Hebei Province are from late September to early October.
Soil fertigation is best done with slightly acidic sandy loam that is rich in organic matter, deep in soil, and well-drained. After harvesting, crops should be ploughed and ridged as soon as possible after harvest to activate the soil and apply enough base fertilizer. The depth of garlic is generally 20 to 30 cm. Before the planting, a one-time application of base fertilizer in combination with soil preparation, 5000 kg of farmyard manure in Mushi, 100 kg of sulfur-based compound fertilizer and 1.5 kg of zinc sulfate. Seeding film selection of a large head, garlic large and neat, hard garlic, white and fresh color of garlic for the species, generally require 100 grams of garlic cloves weighing more than 400 grams as well. The local temperature stability can be sown at 18°C ​​to 19°C, so that when the winter is over, the height of the garlic seedlings can reach 25 cm or more, which is conducive to safe wintering. Line spacing is l5 centimeters, spacing is 10 centimeters, depth of ditch is 10 centimeters, the species valve is arranged in the ditch, and it is kept upright. Generally, 2.5 to 30,000 plants per mu are suitable. When the film is covered, it is required that the film be flat and wrinkle-free on the surface of the bowl, and there is no space under the film, so that the film will adhere to the surface of the bowl to prevent weeds from growing. When the garlic emerged more than 50%, the membrane was ruptured. The membrane was punched with a sharp wire and the diameter of the orifice was controlled at about 1 cm.
After the sowing of the field management, one wafting should be performed immediately. After the seedlings are poured out, a small amount of water is poured and the antifreeze water is poured before the soil is frozen. Cover straw or corn stalk several days later to prevent cold and drought and ensure safe wintering of garlic sprouts. Before and after the “Spring Equinoxâ€, the ground cover shall be cleared and water shall be selected in sunny and warm weather to promote the growth of garlic sprouts as early as possible. From the beginning of April to the end of April, according to the waterlogging situation, 5 to 7 days will be used for watering once, water will be topdressed for 2 to 3 times, and generally 20 kg of urea will be applied per mu, and watering will be stopped 3 to 4 days before picking. After harvesting, garlic sprouts should always keep the soil moist and promote the rapid growth of garlic until 2 or 3 days before harvest, and stop watering. It is generally harvested in mid-May.
Prevention and treatment of insect pests When garlic grows to two leaves as soon as possible to prevent pests such as garlic thrips and pests and other pests, can be used to control pesticide sprays such as high-cypermethrin. In mid-March, attention was paid to the prevention and treatment of garlic sprouts and garlic sprouts. For the control of garlic leaf blight, spray can be performed with 50% polymyxin or 65% triamcinolone 1000 times solution.
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