Seedling selection and planting

1. Planting row direction and density

Zijijie Seedless is cultivated in greenhouses in Raoyang County, Hebei Province, with the north-south row direction. It is advisable to plant rows 1.7 meters apart and plants 0.8 meters apart.

2. Land preparation and planting of seedlings

Dig the planting ditch. The planting ditch is dug at a size of 0.6 meters × 0.6 meters. The topsoil and subsoil are separated. The topsoil and organic fertilizer (fully decomposed Manure) is mixed evenly and then backfilled into the planting ditch. When the topsoil is insufficient, soil can be taken from between the rows. When the planting ditch is backfilled to be level with the ground, it is filled with water and settled in preparation for planting.

When planting seedlings, dig planting holes with a depth and width of 20 to 30 cm according to the planting points in the planting rows, make a steamed bun-shaped mound in the pit, and stretch the roots of the seedlings on the mound. , so that the depth of the planting hole is about 10 cm. When the filling soil exceeds the root system, gently lift the seedlings and shake them so that no gaps are left around the roots. The appropriate planting depth should be that the original root neck of the seedling (original soil mark) is level with the surface of the planting ditch. After the pit is filled, step it firmly and pour large amounts of water forward. After the water seeps down, cover it with mulch to increase warmth and preserve moisture.

Management after planting

1. Young tree cultivation and management techniques

(1) Plastic pruning

After the grapes sprout, only When one new shoot grows, wipe out the remaining new shoots. When the new shoot grows to 30 to 40 cm, bind the remaining new shoots and cultivate strong new shoots, and remove the tendrils in time. Strengthen the management of the secondary shoots and leave one leaf on the secondary shoots before topping to promote the growth of new shoots and the differentiation of flower buds. Select strong new shoots to be topping when they grow to 120 cm. No matter whether they reach 120 cm or not, they must be topping at the end of August. After topping, the top secondary shoots will continue to grow, and the other secondary shoots will be left with 1 leaf before topping to promote the full development of the main vines. When the length of the extended tip retained at the top reaches 40 cm, perform the second topping, and treat the auxiliary tips as above, and so on, perform the third and fourth topping. When pruning in the winter of the first year, leave 1.2 meters of the main vine. Tie the main vine horizontally to the first wire at a distance of 50 cm from the ground, and cut off all the secondary shoots.

(2) Fertilizer and water management

When the new shoots grow to 20-30 cm, spray 300 times amino acid chelated fertilizer + 0.3% urea on the leaves every 7-10 days , apply 50 grams of urea to the soil of each plant every 15 days and water it thoroughly until the end of July. Spray amino acid boron and amino acid potassium foliar fertilizer once every 10 days in early August until early October; apply potassium sulfate compound fertilizer once to the soil in late August, 30 kg per mu; add potassium sulfate to the soil in late September Mix it with decomposed high-quality organic fertilizer and apply it. Apply 5 cubic meters of decomposed high-quality organic fertilizer per acre, mix with 100 kilograms of bio-organic fertilizer, add 1.5 kilograms of borax and 50 kilograms of superphosphate, etc., and pour water immediately after fertilization.

(3) Control growth and promote flowering

In mid-August, spray 5000 times of ethephon, 1000 times of 50% metropin and 3000 times of potassium dihydrogen phosphate on the leaves. The mixture can control growth and promote flowering. The number of sprays depends on the vigor of the grapevines. Generally, 1 to 2 sprays are sufficient.