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The seedlings of the seedlings managed to grow and grow in the middle of July to 40 cm to 50 cm. Some seedlings have several new shoots or several new shoots. They must be removed in time to obtain a strong one. New shoots.
Pluck to the tips of the grape seedlings as they grow to about 59 cm. The side shoots that take place after the heart-pick, except for the one that left the top, are all erased. When the tip of the tip of the tip grows to 6 leaves, leave 3 leaves topping. All the tips on the tip were erased.
The new shoots on the seedlings of high-grade grape varieties can be placed between 1m and 1.5m. Such seedlings must be tied. You can insert a bamboo pole between every two rows of seedlings every 3 to 4 meters, and pull 2 ​​or 3 thin iron or nylon ropes. Two bamboo poles pull one line each. Attach the two rows of seedlings to the wire or nylon rope between the bamboo baskets. If the seedlings are relatively thin, one bamboo shoot may be tied to each new seedling shoot.
Water and Fertilizer Management When seedlings grow to 8 leaves, 15 kg per acre - 20 kg of urea, 15 days after the application, generally applied 3 times. The root dressing was divided into two sub-floods. In the summer, 0.5% urea was sprayed with spray and 0.3% potassium dihydrogen phosphate was sprayed in the autumn.
Before the grape cuttings sprout, water is usually poured every 7 days. After the new shoot grows to 10 centimeters to 20 centimeters, the water is poured every half month. After 30 to 40 centimeters of new shoots, water is poured every 20 days. Good sensation is not poured. If seedlings don't come out of the garden before winter, they must be poured with winter water. Every time you topdress, you should water it.
There are many plastic mulches in the nursery gardens. Generally, no cultivators are needed to remove the weeds. Remove earthworms and weeds on both sides after each watering.
The diseases that are mainly controlled by grape seedlings are downy mildew and black pox, and the insect pests are cotton bollworm, beet armyworm and grape hawk moth. When the seedlings grow to 8 leaves, spray 50% carbendazim 500 times, spray 80% spray 600-800 times after half a month. After the seedlings have been picked up, spray 200 times Bordeaux mixture. If downy mildew is found to occur, spray 78% Kebo 600 times, or 80% 300 aluminum diethylphosphate 300 times, and fall to 180 times Bordeaux mixture.
When shoots grow from 7 to 8 leaves, the hybrids can be recognized and rooted. Different grape varieties should be marked with bamboo and inserted in different varieties.
Timely out of the garden. After falling, the grape seedlings should not be taken out of the nursery immediately. In this case, the nutrition will continue to be stored in the roots. It is more timely to exit the garden before and after "Little Snow".
How to manage grape seedlings in summer and autumn
Every year, there are fruit growers who can not grow strong grape seedlings and virus-free grape seedlings. The reason is that they have insufficient experience or are relaxed in management. The quality of grape seedlings depends on the management of summer and autumn. The methods are: