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Ruby seedless grape cultivation technology
Ruby seedless grapes have high seed setting rate, uniform fruit particles, easy coloring, hard and brittle flesh, good flavor, early maturing, high yield and strong adaptability. The cultivation of facilities will mature in early May. It will be listed two months ahead of the open ground. The yield per mu will be 3,000 kilograms with good economic returns. 1. Colonization: Before planting, dig a hole of 30-40 cm in size, apply 5000 organic fertilizers per acre, 50 kg diammonium phosphate and 10 kg potassium sulfate, and fill in the planting points with the soil. Then plant the seedlings, and then pour the water after planting. Membrane protection. 2. Fertilizer and water management: 50 grams of compound fertilizer before germination to flowering, 100 grams of compound fertilizer when the new shoot grows to 40 centimeters, 400 times paclobutrazol when it is 1 meter high, and fertilizer water after mid-July; Spray 0.3% potassium dihydrogen phosphate for coloring and continue applying 5000 kg of decomposed organic fertilizer after fruit picking. In early October, fill enough water. In late November, the shed will heat up and inject water. 3, pruning: After the seedlings are planted, they are pruned with dried dragons. Each plant has one main vine, leaving 4-6 branches on it and no longer leaving the result branches. As long as 30 centimeters in length, the bridge is tied and the axillary shoot is removed. The main vines are sprayed with paclobutrazol when they reach a height of 1 meter. When they grow to 2.5 meters, they pick their hearts, leaving 2-3 apices at the top of the vine, leaving 2-3 leaves per tip to pick the heart. Leave 60-80 cm short before the shed. After warming up, 5 shoots per shoot were kept for germination and the rest were erased. When the new shoots grow to 20 centimeters, shoots are made to control the growth. 10 to 15 days later, when the growth of the shoot reaches 20 cm, the heart will be picked up. When the length reaches 30-40 cm, the new shoot with strong growth potential is pulled to a lesser part of the shoot and the fruit branch is evenly distributed. Only 1-2 tips will be left for the outgoing tip, leaving 2-4 leaves for each tip. 4, temperature and humidity control: October 19-20 button film, covered with grasshoppers during the day so that the room does not see light, ventilation openings at night to open, so that the temperature dropped to the outdoor temperature, cold for 30 days. Lime nitrogen was used to wipe the mother branch so that it was released from dormancy in advance. In mid-to-late November, the temperature rises during the day. The buds maintain 18°C ​​during the night before flowering, 25-28°C during the day, 15-18°C during the flowering night, and no more than 30°C during the day. The optimum temperature is 25-28°C, and the young fruit's nighttime temperature is 20°C. After that, it is controlled at 18-20°C, 25-28°C during the day, 25-28°C during the daytime, and 16-18°C at night. Always pay attention to the humidity in the booth. When it is too low, turn on the humidifier to maintain the humidity in the booth. During the germination period, the humidity may be greater, and the relative humidity is 85% to 90%. The early flowering period is controlled between 60% and 70%, the flowering period is 60%, the fruit enlargement period is 50% to 60%, and the coloring period is 60% to 70%. It is necessary to expedite the cover of grass in the evening and increase the lighting time. In cloudy and snowy days, fill the lights with light and hang the light curtain indoors. Remove dust and debris from the film to increase light. When the carbon dioxide content is reduced, solid carbon dioxide gas is added. 5, flower and fruit management: weak branches do not stay, Zhuangzhi stay one ear, remove the deputy panicles, remove ear head, leaving 5 spikes per plant, sparse small particles, dense grains. 0.3% potassium dihydrogen phosphate was sprayed on the berries. 6. Pest Control: Before spraying the shed, 5 waves of lime sulfur are used before the shed. The early growth period of the new shoots is at the lowest temperature in the whole year. It is easy to suffer from gray mold and downy mildew. Ecological temperature management is used. The temperature and humidity during the period required good regulation and control. The smoke control method was adopted for the chemical control and the rotation method was applied for the dust method once a week. Should pay attention to the control of whitefly, can spray 25% cyfluthrin EC. During the growth of fruits, it is necessary to prevent downy mildew and powdery mildew. This is a disease that can easily occur in greenhouses. Chlorothalon can be used as a fumigant, 16% as a anti-frost agent, and smoked once every 7-10 days. Also available is 46% triethylaluminum phosphate plus 15% triadimefon 2000 times. After the fruit is harvested, the quantity of Bordeaux mixture is sprayed 200 times, once a month, and the leaves are protected.