Every year, fruit growers can't cultivate strong grape seedlings or virus-free grape seedlings, and the reasons, or lack of experience, or relaxation management. The quality of grape seedlings is the key to the management of summer and autumn.
Branch management
　　 1. Wipe. The new shoots of cutting seedlings grow to 40-50 cm in mid- July . Some seedlings have several new shoots or several new shoots. They must be wiped out in time to retain a strong new shoot.
　　 2. Topping. When the new shoots of grape seedlings grow to about 50 cm, they start to pick the heart. The secondary shoots produced after the topping are erased except for the one left. When the tip of the tip is up to 6 leaves, the leaves of the three leaves are topped, and the tips of the regeneration on the secondary tips are all erased.
　　 3. Binding. The new shoots on the high-grade grape varieties can be placed at 1-1.5 meters, so that the seedlings must be bound. You can insert a bamboo pole every 3-4 meters between the two rows of seedlings , and pull 2-3 wires of fine wire or nylon rope . Two bamboo poles each pull a line. Attach two rows of seedlings to the wire or nylon rope between the bamboo poles. If the seedlings are thin, a bamboo shoot can be tied to each new shoot.
Management of water, fertilizer and soil
When the seedlings grow to 8 leaves, apply 15-20 kg of urea per acre , and apply again after 15 days, generally 3 times. Foliar 2 times, in conjunction with summer spray spraying urea 0.5%, 0.3% potassium dihydrogen phosphate fall spray, the spray 2 times.
Before the grape cuttings sprout, water is usually poured every 7 days. After the new shoot grows to 10-20 cm, water is poured every half month. After the new shoots grow to 30-40 cm, water is poured every 20 days, and if it is good, it will not be poured. If the seedlings do not leave before winter, they should be poured over the winter water. Every time the top dressing should be watered immediately. When the new shoot grows to 7-8 leaves, the seedlings can be removed and the roots can be removed. Different grape varieties should be marked with bamboo and inserted between different varieties.
After the leaves of the grape seedlings fall, they should not go out immediately because it is the process of storing the nutrients in the roots. It is more appropriate to go out before and after "Xiaoxue". The nursery is covered with a mulch film. Generally, no cultivating is required, and the weeds can be pulled out. After each watering, the mites and the weeds on both sides are removed.
The grape seedling diseases are mainly downy mildew and black pox, and the main pests are cotton bollworm, beet armyworm and grape hawk moth. It can spray drugs to comprehensively control pests and diseases. When the seedlings grow to 8 leaves, start spraying, spray 50% carbendazim 500 times solution, and spray 80 % spray 600-800 times solution after half a month . After the seedlings are topped, spray a 1 : 0.7 : 200 Bordeaux mixture. If downy mildew is found, spray a 78% Cobo 600 times solution or 80% ethyl phosphate aluminum 300-500 times solution. In the autumn , the Bordeaux mixture is sprayed with 1 : 1 : 180 : or 1 : 1.5 : 180 . (Source: Shanxi Farmers Daily)
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