1, the processing time and method The denucleation treatment of Muscat Grapes was carried out twice. The first time, when 70% of the inflorescences were in the 1/3 flowering stage and 1/3 of the inflorescences, the spraying effect was the best. It is: 50 mg/L gibberellic acid + 200 mg/L streptomycin; the second spraying time is performed 7-10 days after the first treatment, and the treatment concentration is 100 mg/L gibberellin + 200 mg/L streptomycin. The results of the treatment are good, and the non-nuclear rate is above 95%. 2. Precautions for denuclearization (1) Strictly control the processing time, the first time can not be too early, otherwise it can not reach the goal of no nuclear, the second use can not be too late, must be completed before the physiological fruit drop, otherwise the formation of serious phenomenon of falling grain, affecting the output value; (2) The dilution factor cannot be added or reduced arbitrarily, and the non-nuclear reagent cannot be mixed with other pesticides or chemical reagents; (3) The processing time is best to be processed in the afternoon at 4 o'clock in the afternoon. Cloudy days can be handled throughout the day. (4) The denuclearization treatment must be combined with the corresponding training skills to receive good results. 3, supporting training management technology Non-nucleated plants need to be robust, have sufficient storage nutrients, full shoots, and roots thrive; together they require soil fertility, convenient irrigation and drainage, excellent ventilation and light transmission, and weak trees should not be treated as non-nucleated. And in the production of strict control of production value, per mu control of 2000 kilograms is appropriate, or the load is too large, the formation of tree storage nutrient deficiency, resulting in weakness of the tree, affecting the output value of the next year. (1) Promoting early spring initiation and regularity For the first time of denuclearization, the flowering period commonality is the most critical factor in the treatment of seedlessness. Therefore, 2-3 days before the injury, the use of lime nitrogen or dicyandiamide for bud treatment, in addition to the top buds do not wipe, the other buds wiped, can be initiated in advance, but also sprouting regular, growing evenly. (2) Inflorescence Shaping If you arrive at a fruitful and common joint, and the spike shape is beautiful, you need to shape the inflorescence one week before flowering. Usually, leave the spike tip 8-10 centimeters and remove everything else. (3) Fruit bagging management Spray the insecticide fungicide again before bagging and wait for the liquid to dry and then bag. The use of a half-open bright fruit bag, the raw material is paper on one side, cellophane on one side, cellophane is a bright material, so that the status of the fruit in the bag can be investigated at any time. Through investigation, whether the cellophane is facing the light or the backlight, the set of fruit bags did not suffer from sunburn or burning. Because of its good light transmission, this kind of fruit bag is also conducive to improving the light and temperature conditions inside the fruit bag, and has certain effects on the advanced training. (4) Fertilizer management The basal fertilizer is applied after the fruit is harvested and is applied in an amount of 5000-6000 kg per mu. The farmyard manure or merchandise organic fertilizer can be thoroughly cooked. Each growing season was carried out in 3-4 times according to topdressing, and the main nitrogen fertilizer was mainly from the germination period to the early flowering period; nitrogen fertilizer, phosphorus and potash fertilizer were the main fertilizers after physiological fruit drop. The color change period of grape is dominated by potash fertilizer. In the top dressing, it is possible to carry out topdressing, mainly with trace elements and amino acid foliar fertilizers. It is advisable to spray 3-5 times throughout the growing season. Sprinkle water promptly after each application of fertilizer, pay attention to maintaining a moderate degree of soil moisture, avoid draught flooding during drought, avoid cracking fruit; pay attention to timely drainage in the dry season. 4. Pest control Prevention and control of pests and diseases Based on conventional pest and disease prevention calendars, special attention is paid to the prevention and control of downy mildew in the dry season, and sprayed with protective agents and medical agents. In addition, attention should be paid to the prevention of gray mold in fruit ripening period. The onset of the disease. Disclaimer: Some articles in this website have been transferred from the Internet. If you are involved in third party legal rights, please inform this website. phone Diagnostic Devices,Diagnostic Medical Devices,Medical Routine Diagnostic Tools,Medical In Vitro Diagnostic Tools,Digigal Thetmometer,Stethoscope,Syhygmomanometer Surgimed Medical Supplies Co.,Ltd , https://www.surgimedcn.com