Grape seedlings for summer cuttings can be harvested in the fall of the year, which is an effective method to shorten the nursery cycle. Many years of practice have proved that this method has the advantages of short time for seedlings, high survival rate, reduced winter storage process and investment, good seedling quality, strong growth, and good economic benefits. Its specific technology is as follows:
First, cutting time
It can be carried out from June to August, preferably in the summer, when the shoots grow to 5 to 10 knots, semi-lignified to have a certain degree of hardness and maturity when the cuts are inserted.
Second, the preparation of the bed
Seed beds should be selected for light, irrigation and irrigation, and soil loose and fertile. The seedlings are ploughed and leveled and built into 1 to 1.2 meters wide slots (usually inserted in 3 to 4 rows with 6 to 8 cm spacing). At the same time, stand and branches are prepared for shading. In order to improve the survival rate of summer insertion, 0.005%-0.007% indole acetic acid can be used to soak the cutting base for 6-8 hours before cutting, or with 0.1%-0.3% indole acetic acid for 5 seconds, or with rooting powder.
Third, the cutting operation
1. Cuttings should be selected lignified, buds were yellow-brown spring vines, cut into 20 to 25 cm long (with 3 to 5 sections) of the small section, cutting the top leaves a leaf, other leaves together with the petiole cut off, the lower end Cut from the outside of the shoot to the horse's ear and insert the seedbed immediately after cutting. After the cuttings, the soil shall be stepped on, filled with water, and a shade shed shall be established. The height of the shed shall be 0.8-1 m. The width of the shed shall be the same as the width of the shed, and the shade shall be 60%-70%. After the insertion, the bed should be kept moist and not waterlogged. 15 to 20 days after insertion, the cuttings sprout, and the new vines can be gradually removed.
2. It is worth noting that because the cuttings are easy to lose water, they should be inserted with the scissors. After sprouting, a small amount of topdressing should be carried out in order to ensure the quality of seedlings in the fall.
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