How long do grape cuttings make it easy to survive? When the grape cuttings have a high survival rat

, pentile small plastic bag cuttings and film covering method. When cuttings are carried out at soil temperature of 10 15oC in spring, chicken manure, sawdust, river sand, and vegetable garden soil are mixed as culture soil according to the ratio, and are packed into a small plastic bag with small holes at the bottom, so that the culture soil is about 15 cm high, and then the grape branches of the three buds are soaked in water overnight, and gently inserted into the culture soil, and a bud is left outside the plastic bag at the upper end. Linghe buried the plastic bag in the soil, and after the world was full of water, it was covered with a film until it became a seedling.

Compared with open-air cuttings, this method has the following advantages: seedlings are formed early, nearly one month earlier than open-air cuttings; The survival rate is high, reaching more than 95%, while the open cuttings are generally only about 80%, saving watering labor; Occupies less space. Green branch cuttings.

In June, 2-3 knots of semi-lignified branches are cut from the new shoots or secondary shoots of the current year and the green shoots are cuttings. Except for one green leaf at the top of the cuttings (the leaves can be cut off in half if the leaves are larger) and one petiole at the other nodes, the cuttings and management are the same as those of hard branch cuttings. Water to promote roots.

In June, cut the vines of the current year (with one or two two-year-old vines at the lower end); Insert it into a canned bottle of half a bottle of water, take kraft paper or plastic film and cut it into a circle the size of the bottle mouth, and cut it to the center of the circle, then clamp the grape vines in the middle of the cut, and then paste it with adhesive tape and the like; Move the vine-filled bottle into a warmer room or kitchen, and after about 15 days of rooting, it can be moved to the fertile and loose soil. Generally, it can be rooted 2-3 times a year, about 15 days each time, a canned bottle can insert 8-10 seedlings, using shelves, a room can cultivate 2000-3000 bottles, and 10,000 seedlings can be raised. Cuttings and seedlings are raised in the current year, and the seedlings are multiplied by pressing branches in the current year.

This is a new technology to increase the coefficient of grape reproduction. After cuttings, strengthen fertilizer and water management to make seedlings fertile and strong. When the seedlings grow to 50 cm, the topping is strengthened to promote the growth of secondary shoots, and each plant retains 3-5 secondary shoots.

In mid-July, when the secondary shoots are about 10 cm long, the main shoots are pressed into the soil for 5-10 cm, and the secondary shoots grow upright on the ground. After the "white dew" to before the "autumn equinox", the secondary shoots are topped and the seedlings are concentrated to raise the seedlings, so that a branch of the secondary shoots will grow into a robust grape seedling. In other words, one cuttings can cultivate 3-5 grape seedlings with well-developed roots, full branches and full buds in the same year, and the reproduction coefficient is 4-5 times higher than that of ordinary seedling raising methods.

Spring March Summer is hot, and the water evaporates so much that it is difficult for cuttings to survive.

The grapes are easy to survive when they are cut in June and August in the summer.

2. Cuttings operation: cuttings should be selected from spring vines that have been lignified and have yellow-brown buds, and cut into small segments of 20 cm to 25 cm. Leave 1 leaf at the top of the cutting, cut off the other leaves together with the petioles, cut the end of the lower digging hand from the outside of the bud node into a horse-ear shape, insert the seedbed in time after the cuttings are cut, water enough and set up the shade shed, the shade shed is 0.8 to 1 meter high, and the width of the shed is the same as the width of the furrow.

After insertion, it should be clear and keep the bed soil moist and not wet.

3. Before cuttings, if conditions permit, you can soak the base of the cuttings with 50 ml to 70 ml of indoleacetic acid solution for 6 to 8 hours, or dip 1000 to 3000 ml of indoleacetic acid for 5 seconds, or treat with rooting powder to improve the survival rate of summer cuttings.

Grapes have a high survival rate from cuttings in spring and summer.

Grapes can be cut in summer or spring. Summer is between June and July, and spring is between March and April. The temperature is suitable, the ambient temperature is controlled between 20 and 25, the humidity in the air is high, which is more conducive to rooting, and the rooting speed of grapes is fast, and it will take root in about 20 days, which can effectively improve the survival rate of cuttings.

After the stored shoots are removed from the furrow in spring, they are first soaked in water in the room for 6-8 hours before being cut. Generally, the shoots are cut into cuttings with 2-3 buds. The cuttings are generally about 20 cm long, and the varieties with long internodes only have 1-2 buds left on each cutting.

When cutting cuttings, the upper end is cut flat at 1 cm above the bud, and the lower end is obliquely cut at the bottom of the bud, and the cut is "horse-ear-shaped" (the cut is easy to take root when it is close to the bud eye). The bud eye on the upper part of the cuttings should be full and full, and if the first bud eye is damaged after cuttings, the second bud eye can germinate, which is conducive to improving the survival rate of cuttings.

Precautions for grape cuttings

It is necessary to prevent soil drought at this stage after grape cuttings and before the emergence of new roots, and generally water once every 10 days or so. If the soil is watered too much, the soil will be too wet, the ground temperature will be reduced, and poor soil aeration will also affect the rooting of cuttings. After the cuttings are rooted, fertilizer and water management should be strengthened.

In early to mid-July, the seedlings enter the rapid growth stage, and the fast-acting fertilizer should be applied 2-3 times.

In order to make the branches fully mature, irrigation and fertilization should be stopped or reduced from late July to August, and at the same time, pest control should be strengthened, and the main and secondary shoots should be topped to ensure the growth of seedlings and promote thickening growth. During the growth period of seedlings, it is necessary to cultivate and hoe in time to improve soil aeration conditions and promote root growth.