After years of experiments and practices, the author explored the prevention and control of strawberry anthracnose nursery techniques. Using pesticide combinations and timely spraying after rain, shade and rain sheltering, paclobutrazol control and other measures, effectively control the anthrax damage in strawberry.

Seedbed preparation Select a soil with loose soil, convenient drainage and irrigation, and no water accumulation. The soil was sterilized using a cotton fumigation soil method or lime nitrogen solar high temperature sterilization method. In the high temperature season, turn over the soil and spread 98 to 20 to 30 grams of fine particles per square meter, or apply 70 to 100 kilograms of lime nitrogen per acre evenly, and then pour fine soil to keep the soil moisture at about 60%. Covering the plastic film for more than 15 days, and removing the film for 7 days. The seedbed is plowed in winter and the parent plant is deep-turned 15 to 20 days before colonization and exposed to sunlight for 3 to 5 days. Spread 200 kg per mu of cooked cake fat or 1,000 kg of organic fertilizer, plowing after fertilization, do 1.5 ~ 2 meters wide rake, ditch depth of 20 cm, smashing the surface.

Selection and disinfection of mother plants selected detoxification plantlets and special mother plants. Dedicated mother plants should be selected in October last year, disease-free and robust seedlings, with 800-kilograms of pyruvizol oxime ester emulsifiable concentrate 800 times liquid immersed seedlings for 2 minutes to disinfect, dried and planted in the parent plant garden for overwintering, During the March-April transplantation of the mother plant, the disease was treated again according to the above criteria and methods, and the mother plants with sick and undersized leaves were removed.

Mother plants are transplanted as early as possible and a sufficient number of seedlings are bred before emergence. The distance between plants is 50 cm, and the use of tissue culture plants can be relaxed to 70 cm. Avoid planting too deep. Do not bury the leaves in the soil to prevent them from sprouting. After planting watering or pouring thin human waste, promote live trees.

The early stage of fertilizer and water management (before the end of June) keeps the soil moist, fertilizes at the right time, and promotes the stolon. In the later period (after early August), fertilizer and water were properly controlled to promote flower bud differentiation. After the mother plant survives (in early May), 50 to 100 mg/liter of gibberellic acid solution is sprayed and sprayed once every 7 to 10 days. According to the fertility of soil fertility and growth of seedlings, every 10 to 15 days, 0.3% urea or compound fertilizer solution is poured, or 5 to 10 kg of urea or compound fertilizer is applied per acre in rainy weather; it can also be combined with pest control and spray. Apply 0.3% potassium dihydrogen phosphate solution or foliar fertilizer. The optimum soil relative water content of the stolon was 80%, pay attention to the dry irrigation row.

The management of stolons and seedlings removes the flower stems in time and combines weed removal with dead leaves and diseased leaves. Timely sort the stolons and pressure vines to make them evenly distributed and maintain air and light transmission. After the seedlings were covered with noodles (about the middle of July), the mother plants were cut, and the dense plants were dug and transplanted to make the seedlings evenly distributed and reduce the incidence. In early July, the seedlings were sprayed with 100 mg/L paclobutrazol solution at the time of filling the surface of the seedlings, spraying once more at intervals of 15 days to increase plant resistance.

Prevention of grass and seedlings in the early period of timely cultivation and weeding. The stems cover most of the open land and the weeds are picked after rooting. Take care not to turn the rooted seedlings.

Spraying prevention to prevent strawberry anthrax at present is better than 80% of mangosteen mancozeb WP, 100g of 25% chlorpheniramine, BaiTai 60% oxazole ether, water dispersible granules, Kay Run 250 g/l pyraclostrobin EC and so on. In open field cultivation, spray once every 7-10 days in May-June, and spray once every 5-7 days in July-August. July-August high temperature period, after the shower to make up a drug. Foliage, leaf back, stolons must be sprayed.

The environmental regulation and prevention shall adopt rain and shade conservation methods. Cover the film at the end of June to shelter from the rain; in July the high temperature period covers 60% of the shade net, or build a shade canopy at the nursery; cover 60% of the shade net in the high temperature period, and cover it at night to prevent disease and heat.

Tablet Supplement

Tablet Supplement,Zinc Tablet,Buccal Tablet,Compound Vitamin B Tablet

Weihai Baihe Biology Technological Co., Ltd. , https://www.biohighnutraceutical.com