Grape Seedling Grafting and Propagation Technology
October 16 10:01:06, 2018
1 Hard-twist connection method In order to improve the cold-resistance of grape root system, the scion of the excellent variety is grafted onto the 1-year-old shoots of cold-resistant rootstock by the splicing method 15 days to 20 days before the spring sprouting, followed by heating. Promote healing, then cuttings to make them rooted. In the grape growing regions, in order to renew the varieties, the scions were selected before sprouting in the spring, and the old vines of the regenerated cultivars were used as rootstocks, and the seedlings were grafted using splicing methods to make them into seedlings. 2 Green twigs and rootstocks can be used to grow twigs of cold-resistant grapes such as vines, and seedlings of cold-resistant vines can also be used to sow seedlings and then grafted. The rootstocks used were seedlings or semi-lignified green shoots of the previous year, and the picking time was generally between June and July. It is best to choose a cloudy day, then rain the best. It is better to graft in the afternoon when sunlight is violent. The specific method is: Select a relatively robust semi-lignified shoot developed on the rootstock, cut the upper end, leave a 10cm to 15cm length for the rootstock, cut the mouth from the top bud 45cm, the leaves on the rootstock leave, the auxiliary shoot all go to the net, Go to winter buds. Scion should use semi-lignified shoots or accessory shoots of fine varieties, remove the leaves after cutting, and only retain the petiole whose length is 0.8cm to 1cm. Scion with the use of mining. The scions were left 2.5 cm to 3 cm below the bud and 35 cm below the bud. The scion is cut into wedges with a splicing method. Afterwards, the interface was tightly packed from top to bottom with plastic strips. Only the small apron and winter buds in the petioles and leafhoppers were exposed. The cuttings on the top of the scion were prone to losing water and affecting survival. The plastic strip was used to cap the cap. You can also use the bagging method to put the entire scoop in a plastic bag to prevent loss of water from the scion. After 10 days after the inspection, when the buds on the scion grow about 3cm, cut the top of the plastic bag; after about 25 days, remove the plastic bag and the plastic strip that is tied to the interface, without affecting the rough growth of the stem. Under circumstances, it does not need to be lifted. The sprouts on the rootstocks should be promptly removed, and the scion shoots should be set up at the time of placement of the brackets, and the disease prevention and other field management work should be done. 3 The bud connection method is generally suitable for shoots when lignification is started at the shoot and buds are to be used. All provinces are conducted from June to July. The specific connection method is: Scion uses new shoots of the year. It requires that its winter buds are full, and the auxiliary shoots are not issued or issued very small. When the shoots are first picked, the shoots are cut from the buds to the shoots about 10 cm above the ground. The shoots are cut from two sides of the shoots to 2 cm below the shoots and 1 cm above the shoots. The incision is cut into deep xylem with the incision, and the buds are cut off with the xylem, and then the same The method cuts buds on the scion by the size of the rootstock incision. The buds are placed on the incisions of the rootstocks to make them fit tightly, and then the joints are tied with plastic strips. After 10 days to 15 days, buds and rootstocks will heal and the plastic strips will be released. The management of rootstocks in areas with long growing seasons, such as sprouting in the middle of June, can be cut after the buds have survived, requiring one pruning on the sprouts, wiping off the buds and stocks on the section. The germination of sprouting buds in the year to strengthen the management of buds and shoots, timely brushing, tying, top dressing and irrigation, as well as pest control, can be seedlings in the year; in the short growing season, the buds will not be cut after survival anvil. Before the cold in the fall, leave 1 to 2 knots on the anvil before the bud. Winter work should be done well.