Peak grapes are a mixed european-american variety of medium- and four-fold varieties, originating in japan and characterized by large ears, large grains of fruit, velvet velvet, soft and sweet fruit, strawberry fragrance, and are the main plant species favoured by fruit farmers and consumers. The methods and techniques used to plant the giant grapes consist mainly of the following:
Choose garden and seedlings
Large-peak grapes are suitable for planting in fertile, ventilated, and easily drained areas, generally with gravel and sandy soils with a ph value of 6. 5-7. Fruit seedlings are selected for highly resistant, virus-free, high-quality varieties, preferably healthy seedlings nurtured by sterile tissues or incubated。
Planting seedlings
Peak grapes are suitable for planting in the spring of march-april each year, with a distance of 1. 8 metres and a range of 2. 5 metres, with an average acre planting of 148. When planting, be careful not to bury the circa, but to maintain the cm above the ground. After planting, water is provided in a timely manner and some organic or compound fertilizer is applied during the week。
A sprout trim
Grapes of great peaks must be replaced in a timely manner with extra buds such as double buds, sprouts and sub-sprouts, to retain sprouts. Before flowering, the main stairwell is to be grafted in two to three sessions, each taking 5 to 10 centimetres from the top of the stairwell, in order to control the tree position and promote sit-down fruit. During the winter, mid-long cutting is required, with 10-15 new floors per square metre, which need to be staggered up and down to ensure that 15-25 leafs are grown per result. In the summer, leaf trims are to be performed to remove the strong, oversized, overstretched branches on the shelf, as well as the misplaced chickens and overtly weak branches, in order to nurture the robust outcome and reduce the consumption of nutrients。
Plumbing fruit
In order to improve the quality of fruit and to prevent fissures, porcelain grapes must be properly fertilized. And the weak do not have a ear, and the mediocre doth leave a ear, and the strong doth leave two ears. 1/4-1/5 at the end of the bouquet and removal of the first ear, 3-5 days before flowering. When the grains expand, it is timely to remove the small particles, the sick particles and the fissures, so that the ratio of the active leaves to the ears is 15-20:1。
Strengthening water fertilizer management
Magnificent grapes are more demanding for water fattening, and adequate moisture and fertilizers are required during the growth of berries. Generally, 1. 5 kg of pure nitrogen, 1 kg of phosphorus fertilizer and 1. 5 kg of potassium fertilizer are absorbed for each 100 kg berries harvested. After the fall of leaves in winter, the acres were exposed to decomposition of 2,000 to 3,000 kg of organic fat and 2 per cent of phosphorus fat. After flowering, during hard core and during colouring, respectively, composite fertilizer and potassium sulphate were pursued and applied 100-150 kg per acre. In the berries colored leaf, 800 times the potassium phosphate solution was sprayed, followed by another one in half a month to improve the quality of the berries. It is not possible to overfill the berries after they reach chromosomal maturity in order to prevent poor colour, increased acidity, reduced sugar, and even fissures when severe. Water should be stopped 15-20 days before harvest。
Prevention and control of pests and diseases
The porcelain grapes are concerned with common diseases such as fur disease, powder disease, frost disease, black pox disease, grey disease, anxle disease, as well as common pests such as grape-wing moths, tea green leaves and spiders. In general, prior to the planting of the plant, five waves of thiomers were sprayed to combat mammoth and powdery diseases. One week after the flower, the pox is treated and 200 times the equivalent of bordeaux. Starting in early june, a 50 per cent distillation (600-800 times the liquid) was sprayed once every 10-15 days, 3-4 times continuously, and 400 times more ethyl phosphorus in order to combat frosting. For grape-to-wing moths, 50 per cent of the diarrhea can be injected into the cavity, followed by viscos. For pests such as tea green leaves, 40 per cent of the rubber concentrate 1000-1500 times more can be sprayed. It is important to note that spraying is stopped about half a month before harvesting to avoid pesticide residues affecting the marketing of grapes。
Picking fruit
Grapes of giants are usually born for about 130-150 days, and in places such as anhui, they are usually fertilized in early april, blooming in mid-may and ripening in mid-july and late july. Beginning in late july, berries become purple, with an acid content of 0. 6-0. 8 per cent and sugar content of over 15 per cent, and can be picked up when the scent is more fragrance. The timing of extraction is generally appropriate in the afternoon or morning following dry dew, which is not suitable for harvesting in the fog or dark. Grape moisture and field heat should be minimized, and light cutting should be used to prevent the break-up of the pellets or the removal of pollen。
