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The nursery is selected for soil fertility, good permeability, sandy soil or clay soil with a pH value of 5.5 to 6.5. It requires convenient irrigation and drainage. The former can't be planted with strawberries, and it is best to use paddy fields. Turn over and freeze the weathered fields.
Construction of Shelter Shelters Shelter Shelters are required to be erected before the planting of the seedlings in early March. They are constructed with reference to ordinary greenhouses and have a height of 1.5 meters. Shelfs are installed around the shelving and there is no apron below the groove. 6 meters wide shed, the width of the film is 7 to 7.5 meters, and the length depends on the length of the field block.
Apply enough base fertilizer seedlings to spread base fertilizer before colonization, apply 800 kg of organic fertilizer per acre or 100 kg of commodity organic fertilizer, and plow the soil to make a 1.8-meter-wide turtle-back surface.
Seedling colonization in early March Select robust seedlings or virus-free tissue culture seedlings as seedlings and colonization, one row per seedling, plant spacing 40-50 cm, 70-80 plants per acre. When the planting is not buried in the roots without rooting, while the side of the planting rooting water, slowing the seedlings to pay attention to watering, keep the soil moist, promote early living trees and hair trees.
Laying drip irrigation belts The distance between drip irrigation belts is controlled at 40 cm in width and 1.8 m in width. 3 to 4 drip irrigation belts are required, and the drip hole is required to face down.
Nursery bed management (1) Plant management. After the seedlings are planted and lived, buds are removed in time to reduce nutrient consumption, which is conducive to pumping stems. Timely removal of diseased seedlings, removal of diseased leaves and old leaves. Into the seedling stage in a timely manner to spread vines, will be evenly led to the pods on both sides of the locust, found "floating" timely colonization, in order to promote seedlings root system into the soil. When the stolons and strawberry new plants were covered with sorghum, the overlapping leaves and stolons were removed to ensure that each seedling had a certain growth space. (2) density of seedlings. When the new plant is evenly distributed, it is required that the spacing between the seedlings should be 10-15 cm, and generally 30,000-35,000 plants should be kept per acre to ensure that seedlings grow robustly. (3) Loose soil weeding. Timely soil loosening, weeding to facilitate the growth of new strawberry plants and stolons. The growth of weeds will be inhibited when the stolons cover the surface. (4) fertilizer and water management. Wet surface shall be kept moist, dry and drip irrigation water shall be provided, and the ditch shall be kept open in case of rain to ensure that there is no accumulation of water in the field. From May to June, the peak of seedling growth will be 1-2 times depending on the plant growth. If the leaf color is light before the beginning of August, it can be applied once again. After mid-August, fertilization (especially nitrogen fertilizer) is stopped and the water is properly controlled. Flower bud differentiation.
The main diseases of pest control strawberry seedlings include anthracnose, "V" type brown spot, and powdery mildew. The former two use Cobo 78% Poul manganese zinc WP 500 times, or 50% Prochloraz EC. 1,000 times liquid, or 10% difenoconazole water dispersible granules 1500 times spray control; powdery mildew with 20% of 20% of 50% permethrin dry suspension spray control. The pests mainly include locusts, red spiders, and Spodoptera litura, and can be sprayed with 48% chlorpyrifos EC or 20% fenvalerate EC 3000 times. Precautions: When starting from the stem of seedlings, it is necessary to control anthrax regularly. After the diseased plants, diseased leaves and old leaves have been cleared, spraying and preventing diseases are timely. The spray should be carefully and completely sprayed on the surface and stem. Different medicaments should be used alternately to prevent pathogens from being susceptible to drug resistance.
Disease-free and healthy seedlings The standard seedlings are of the same quality, with 4 to 6 unfolded leaves, thick and dark green leaves, and strong plants with thick roots and necks of 0.8 cm or more. The roots are well developed and white roots are more than anthrax and Verticillium wilt.
Anti-rain and strong seedling cultivation techniques for red-cheek strawberry
At present, the varieties of strawberry cultivated in the middle and lower reaches of the Yangtze River are mainly Fengxiang and Mingbao, Fengxiang susceptibility to powdery mildew, Mingbao fruit are soft, and they are not resistant to storage and transportation. These problems seriously affect the yield and quality of strawberries. The red cheek strawberry has better comprehensive traits. The plants are erect, tall, prosperous, shallow, dormant, flower buds differentiate early, spikes large and thick, inflorescences are continuously pumping, the results are good, the deformed fruit is less, the fruit shape is large, the commodity fruit is average The fruit weight is 16 grams, the fruit is long conical, the fruit surface is bright red, soluble solids content is 11.6%, good taste, high fruit hardness, more resistant to storage and transportation, the price is higher than Mingbao and Fengxiang. However, currently, red cheek strawberries have not been widely used in production. The main reason is that it is difficult to raise seedlings, and the use of conventional open field seedlings is prone to anthrax disease. After years of trials and researches, the Zhenjiang Agricultural Science Institute in the hilly area of ​​Jiangsu Province has summarized the techniques for cultivating the rainy and strong seedlings of the red-cheeky strawberry facilities, which are briefly described below.