How to manage grape seedlings in summer and autumn?

How to manage grape seedlings in summer and autumn? Is there anything to pay attention to? there are fruit growers who can not cultivate strong grape seedlings or virus-free grape seedlings every year. The reason is inexperience or relaxation of management. The key to the quality of grape seedlings lies in the management of summer and autumn. First, branch management. 1. Wiping branches. The new shoots of grape seedlings raised by cuttings grow to 40-50 cm in mid-July, and some seedlings have several new shoots or several secondary shoots of a new shoot, which must be wiped in time to leave a strong new shoot. 2. Pick the heart. When the new tip of the grape seedling grows to about 50 cm, it begins to pick the heart. The secondary tip produced after heart extraction is erased except for the one at the top. When the apical accessory tip grows to 6 leaves, leave 3 leaves to pick the heart. All regenerated tips on the secondary tip are erased. 3. Binding. The new shoots on the seedlings of high-grade grape varieties can be put up to 1.0-1.5 meters, and such seedlings must be tied up. You can insert a bamboo pole every 3-4 meters between the two rows of seedlings and draw 2-3 lines of fine wire or nylon rope. Pull a line on each of the two bamboo poles. Tie two rows of seedlings to the wire or nylon rope between the bamboo poles. If the seedlings are sparse, a bamboo pole can be tied to the new shoots of each seedling. Second, the management of water, fertilizer and soil, when the seedlings grow to 8 leaves, 15-20 kg urea per mu, 15 days later, apply again, generally 3 times. Topdressing outside the root is divided into 2 times, 0.5% urea is sprayed in summer, 0.3% potassium dihydrogen phosphate is sprayed in autumn, and each is sprayed twice. Before the grape cuttings germinate, they are usually watered every 7 days. After the new tip grows to 10-20 cm, water is watered every half a month. Wait for the new tip to grow to 30-40 cm, water every 20 days, good soil moisture will not be watered. If the seedlings are not out of the nursery before winter, they should be watered for the winter. Each topdressing should be watered immediately. When the new shoot grows to 7-8 leaves, miscellaneous seedlings can be recognized and pulled out by root. Different grape varieties should be marked with bamboo slices and inserted among different varieties. Grape seedlings should not leave the nursery immediately after falling leaves, because this is the process in which nutrients continue to be stored in the roots. It is more appropriate to come out of the nursery before and after Lesser Snow. Nursery beds are covered with plastic film, generally do not need ploughing, pull out weeds. Remove the ridges and weeds on both sides after each watering. Grape seedling diseases are mainly downy mildew and black pox, and the main pests are cotton bollworm, beet armyworm and grape armyworm. Spraying can be used for comprehensive control of diseases and insect pests. When the seedlings grow to 8 leaves, start spraying, can spray 50% carbendazim 500 times, half a month later spray 80% spray 600-800 times. After the seedlings are coring, spray Bordeaux liquid of 1-0. 7-0. 7-200 Bordeaux. If downy mildew is found, spray 78% Cobo 600 times, or 80% ethyl phosphor aluminum 300-500 times. In autumn, Bordeaux solution is mainly composed of 1-or 1.5-fold. Click to see more grape planting techniques click to see more fruit planting techniques