Fertilizer management

After the fruits are picked in autumn, base fertilizer is applied, a pit with a depth of 40×40cm is dug outward along the edge of the original planting hole, and organic fertilizer is applied in layers, mainly human and animal manure, manure and compost. At full fruit stage, more than 2kg organic fertilizer should be applied per 1kg fruit. Topdressing is mainly applied in two periods, and 1 quick-acting fertilizer, such as decomposed human excrement and urine, is applied more than ten days before flowering. Apply "Woye high-potassium water-soluble fertilizer" and other potassium fertilizers 1 times in the fruit expansion period.

water management

Grape growth needs a lot of water, such as several key periods from germination to flowering; After the fruit coloring period is set, water it in time when it is dry. Clear the ditch in time in rainy days to eliminate accumulated water.

Guo Hua management

In order to improve the fruit setting rate, increase the fruit size, and improve the yield and quality, artificial pollination can be used. Nail the furry rabbit skin on the board to make a pollination brush, and pull it on the grape inflorescence to help pollinate in the morning when there is no dew.

blossom and fruit thinning

For varieties such as Kyoho, thinning inflorescences, pinching accessory inflorescences, thinning flower buds and thinning young fruits can improve fruit quality. Flower thinning is completed about half a month before flowering. Pinch off one-fifth to one-third of the inflorescence end, and sparsely differentiate the inflorescence. Sparse buds 5 ~ 10 days before flowering, and gently roll the inflorescence by hand to make some buds fall off. The thinning of young fruits should be carried out after physiological fruit drop, and varieties with large fruit grains such as Kyoho can only keep about 50 grains per ear.

Fruit bagging

Generally, about 40 days after flowering, when soybeans are big, bagging is carried out to control fruit diseases and insect pests. Seven days before bagging, use 50% carbendazim wettable powder 800 ~ 1000 times, or 80% Sheng Da M-45 wettable powder 600 ~ 800 times, or 70% thiophanate-methyl wettable powder 800 ~ 1000 times to spray insecticides and fungicides at one time. Choose bagging every morning before 10 and after 4: 00 pm to prevent high temperature from burning fruit at noon.

Plastic trimming

The horizontal scaffolding of plastic courtyard can be fan-shaped with many main vines, and the trunk height is above1m. On the surface of the trellis, a plurality of main vines are planted on the main extension vines.

summer pruning

Wipe the bud, tie the bud and remove the tendrils. Erase too many useless buds at the early stage of growth. When the new bud grows to about 30 cm, tie it with iron wire to avoid being blown off by the wind, and remove the tendrils at the same time. Picking the core and removing the subsidiary shoots about 5 days before flowering to improve the fruit setting rate. Generally, leave more than 5 leaves on the ear and pick the tender tips at the top. After coring, the secondary branches began to germinate, all the secondary branches of the ear were removed, and two leaves were left in the secondary branches of the ear before coring. After re-coring, a second sub-tip appears, and then the second sub-tip or the third sub-tip is continuously cored by the same method. The auxiliary tip at the top of the main tip can leave a few more leaves.

Winter pruning

Winter pruning should be carried out after defoliation and before February of the following year. It often bleeds after February and is not suitable for pruning. When pruning, we should choose the branches on the main vine that are full of growth, mature and free from pests and diseases as the fruiting mother branches. Results Cutting 2 ~ 4 buds from the mother branch is short branch pruning, cutting 5 ~ 7 buds is middle branch pruning, and cutting more than 8 buds is long branch pruning. The vigorous varieties such as Kyoho are often dominated by medium and long branches, and the combination of long, medium and short branches is used for pruning. Short and thick branches can be long, and slender branches can be short. Leave some short branches at the lower part of the main vine and the side vine as reserve branches to update the branches.