What kind of medicine should be used for cracking grapes?

Grape has a wide range of functions, which can not only be eaten directly, but also can be dried and made into fruit wine, which can bring good economic benefits. But many farmers react that grapes are easy to crack in the process of planting, so what kind of medicine should be used for grape cracking?

What kind of medicine should be used for grape cracking?

If the cracking of grape fruit is caused by diseases and insect pests, spray control can be used, such as 200 times of Jinbai fertilizer mixed with water, 800-1000 times of 50% carbendazim wettable powder and 1000-1200 times of methyl topiramate.

2. Cultivation techniques of grape

1. Select seedlings

After autumn to before the Spring Festival, it is appropriate to buy seedlings, if the seedlings are not planted immediately after purchase, you can choose the weather above zero degrees, the seedlings will be bundled and buried in the pit, the pit depth is 60-80cm, the covered soil is 30cm higher than the ground, covered with grass pile, do not irrigate, only splash water, keep below 7 ℃.

2. Build a garden

The garden should choose high-lying, sunny, fertile and deep sandy loam or loose soil and plots with good irrigation and drainage, which can be planted in river beaches and hilly sandy land. However, in order to achieve high yield, the depth of the land must be more than 60 cm and the organic matter must be more than 2%. Sprinkle fermented dung on the ground, and then turn the land deeply; then ridge the land, with a distance of 1.8-2 meters from north to south, and ridge along the line; it is necessary to build a good drainage ditch to ensure that there is no stagnant water after rain. To establish a support, the support can be cement column, stone column, wooden column, etc., generally using a single hedge, the frame surface is perpendicular to the ground.

3. Planting

It is better to plant the soil immediately after thawing, according to 0.7 meters apart. If it is a grafted seedling, oblique to the north, pour water after planting, continue to bury the soil when the surface is dry, bury it to 10 cm above the grafting joint, and pick off the soil pile after germination. If it is a cuttage, plant it obliquely to the north, pour water after planting, and continue to bury the soil when the surface is dry. After planting, cover the wet grass and cover the grass with plastic film to maintain the humidity and increase the ground temperature.

4. Planting management

The main results are as follows: (1) temperature: the lowest temperature for grape growth is about 12 ℃-15 ℃, the lowest ground temperature is about 10 ℃-13 ℃, the optimum temperature for flowering stage is about 20 ℃, and the optimum temperature for fruit expansion is 20 ℃-30 ℃. During the fruit period, if the temperature difference between day and night is large, the coloring and sugar content are better.

(2) Illumination: grapes must have a certain intensity of light during normal growth, but not too strong, otherwise they should be bagged or cover the fruit with grape leaves.

(3) moisture: grapes have higher requirements for water, which requires more water in the early growth stage or vegetative growth period, weaker roots and less water demand in the later growth or fruiting period, and pay attention to drainage in rainy days, because grapes are "resistant to drought but not waterlogging".

(4) fertilization: the principle of "less and then more" and "eat less and eat more" should be grasped. Before the end of June, nitrogen fertilizer was applied twice, compound fertilizer was applied twice from July to August, organic fertilizer was applied mainly from September to October, and applied for 5 times.

(5) pruning: in order to improve fruit setting rate and berry quality, flower thinning, fruit thinning, branch thinning, heart picking, timely removal of tendrils, prevention of nutrient consumption and excessive climbing, and timely binding of new shoots to wire to strive for uniform distribution.

(6) Disease and pest control: the main diseases of grape are black pox, white rot, downy mildew, insect pests such as through-wing moth, star caterpillar, tiger longicorn beetle, leafhopper, red spider and so on.

For the phenomenon of grape fruit cracking, we need to find the right cause first, and then prescribe the right medicine to the case. If it is not caused by diseases and insect pests, you are not allowed to take medicine.