Note on fertilization of late-ripening grapes The key points of different varieties of grape cultivation techniques are that the berry is in the second expansion period and needs sufficient nutrition. Therefore, the management of late-maturing varieties in this period should increase the use of fertilizers. The fertilizer varieties should be mainly applied with phosphorus and potassium fertilizers. In addition to the root application, the Yuege Fertilizer Network recommends paying attention to the application of foliar fertilizer. Under normal circumstances, 25 to 30 days before harvesting, 15 to 20 kg of potassium sulfate and calcium superphosphate are applied per mu, and potassium dihydrogen phosphate is applied 2 to 3 times.
Grapes are generally planted in north-south rows, so that they can better receive light, and the frame is basically perpendicular to the dominant wind direction of the growing season, which can reduce wind damage.
The line spacing should be determined according to the type of cultivation frame. The row spacing of the fence frame is generally 2-2.8 meters, the row spacing of the scaffolding is generally 4-6 meters, and the spacing of the cultivated plants is 0.5-0.6 meters.
In addition, the planting ditch must be dug well before planting. Generally, the depth and width of the planting ditch are 0.8-1.0 m, and the fully decomposed organic fertilizer is applied to the bottom of the ditch. Because the grapes are hi-fertile plants, the soil is deeply cultivated and improved before planting, and suitable growth conditions are created for the roots, so that the grape plants can grow robustly, stably and yield high.
Recommended reading: technical points of potted grapes
According to the number of plastic branches, it can be divided into single main vine-based shaping and double-main vine or multi-main vine-based shaping. Single main vine shaping is a single grape with one main vine and one or two side vines, such as single dry type, electric pole type, umbrella shape, pagoda shape and small scaffolding.
Double main vine or multi-main vine shaping is a single grape with one trunk, two main vines or multiple main vines and corresponding fruit vines, mainly spherical, basket, fan, funnel, spiral For shaping, etc., shaping needs to be completed by means of a pre-prepared basin frame, such as a ball type:
The plant leaves 2 to 3 long-term mother branches on the shorter trunk. With the wire frame, the curve is bound to a sphere, and the new shoots are left and left 6-8 to be bound to the surroundings, and the plants are rounded. Funnel type: The plant leaves 3 to 4 main vines, which are distributed obliquely along the funnel frame, or the resulting mother branches are bent into upper and lower rings, and the new tips are bound around the funnel frame.
prune
Pay attention to controlling the polarity and retract or update the bare branches. The amount of shoot buds should be coordinated with the potted soil, fertilizer, water and nutrient conditions. Management of branches and vines: timely germination, removal of tips, and the attachment of topping and branching according to different growths. Inflorescence shaping and sparse flower thinning: one result leaves 1 ear (large fruit variety) or 1~2 ear (small fruit variety), carefully decorate the cob before flowering, and carefully thin the fruit after flowering to fruit Fully tidy for the purpose.
Fertilization
The principle of thin fertilizer is applied. The seedlings planted in the same year generally start from the seedling height of about 20cm (that is, 6-7 leaves), spraying 0.1%-0.3% urea solution or the fertilizer water diluted after fermentation every 7-10 days. In this concentration range, the dosage is used. Gradually increase, until the end of September.
The potted grapes that entered the fruiting stage were mainly fertilized with nitrogen-containing fertilizers in the early stage of growth. After flowering and fruit setting, 0.3% potassium dihydrogen phosphate solution was sprayed 3-4 times every 7-10 days from the fruit expansion period. Note that water should be watered immediately after each application. After the fruit is harvested, the base fertilizer is combined with soil replacement.
Watering
When watering, the water temperature should be close to the temperature of the soil. It is better to water before 10 o'clock in the morning and after 4 o'clock in the afternoon; the water quality is good, the number of watering depends on the season, generally the temperature in early spring is low, every 2-3 Watering once a day, the summer temperature is high, the evaporation is large, and watering can be done once every 1-2 days. After the temperature in autumn is gradually reduced, the number of watering is gradually reduced. Depending on whether the soil is wet or not.
Disease prevention
Potted grape pests are less, the focus is disease. Common diseases include downy mildew, white rot, anthracnose, and black pox. It can spray 3-5 Bomei stone sulphur mixture during the dormant period of grape. After germination, spray 1:0.5:200 Bordeaux mixture or 500 times compound carbendazim solution every 10-15 days. Prevention and treatment.
Rooting and soil change
The soil change period can be carried out before the end of autumn or spring germination. First, the water is poured, then the pot is inverted, the basin is gently buckled, and the whole root system and potting soil are poured out. Then, the soil pieces on the roots are loosened with bamboo pieces, and the surrounding area is cut off. The old roots, the roots of the disease, cut short portions of the roots, and then replant them in the new culture soil.
Wintering management
In order to prevent the potted grapes from being damaged and drained, water should be poured before wintering. According to the situation, water should be poured once every 10-15 days, covered with plastic film to moisturize, then dig trenches or digging pits buried in the soil ditch, or placed in the vegetable dish. The basement can also be placed in the corridor or on the balcony to cover the winter. The temperature is 0-5 °C. (Chen Xiangyun, Agricultural Bureau of Jixian County, Changde City)
This article URL: Late maturity grape fertilization notices, different varieties of grape cultivation techniques
Dehydrated Lotus Root Products
Dehydrated Lotus Root Products,Dehydrated Lotus Root Slices,Dehydrated Lotus Root Powder,Dehydrated Lotus Root Instant Food Products
Xinghua Lvwei Foods Co.,Ltd , https://www.lvweifoods.com