Moths began to eat branches and then cadres. The moth has entered the branches, and if it is not removed as soon as possible, the branches and leaves will wither. Control moth

Observe the pests first. Grapes are vulnerable to insects, so it is necessary to spray insect repellent on the surface of grapes as soon as possible. If the larva has eaten into the branches, it can be cut off about 6 cm below the moth hole in severe cases, and the worm body should be taken with you.

Vaseline insecticidal method. You can use vaseline oil to block the frog hole, so that the air is not circulated, and the moth will suffocate. If it doesn't work, you can put the wire into the frog's hole and hook the bug out. If the moth is stabbed to death, there will be water slurry attached to the thread.

Dichlorvos killing method. Put the cotton ball soaked with dichlorvos into the moth hole, and then seal the hole with clay or forest oil to kill the moth.

Alcohol pest control method. Inject pure alcohol into the frog's den to make it penetrate into the branches and kill insects.

2. Grape stem blight

In the same year, grape branch blight was more common in leaf scars, and the diseased part was dark brown to black, extending deep into the branches until the pith and the diseased branches died.

Prevention and cure method

Check branches and vines in time. When the diseased part is found, the diseased spot is scraped off with a knife, and the diseased spot is cut off or sawed off in severe cases. The wound was disinfected with 30% times solution of Bomei 5 degree stone sulfur mixture or 45% crystal stone sulfur mixture. Strengthen vineyard management, apply more organic fertilizer, loosen or improve soil, drain water in time after rain, and pay attention to antifreeze.

Combined with the prevention and control of other grape diseases, 80% sodium pentachlorophenol can be sprayed with 200 ~ 300 times of liquid Perme 5-degree stone sulfur mixture once before germination. Spray 1:0.7:200 times bordeaux solution or 500 times of 77% kocide wettable powder, 500 times of 50% copper succinate (DT bactericide) wettable powder and 350 times of 14% copper ammonia solution in time in May and June.

Extended data

Grapes are light-loving plants and need high light. The length of illumination time has a great influence on the growth, yield and quality of grapes. When the light is insufficient, the new shoots grow thin, the leaves are thin, the leaves are pale, the ears are small, flowers and fruits fall off in large numbers, the yield is low, the quality is poor, and the winter buds are poorly differentiated. Therefore, when building a garden, it is required to choose a place with good light, pay attention to improving the wind and light conditions on the shelf surface, correctly design the row direction and row spacing, and adopt reasonable shaping and pruning techniques.

Water plays an important role in the life activities of grapes, and nutrients are transported to various organs after being dissolved in water, so water is the carrier of nutrients, which can regulate the body temperature of trees and promote the absorption of water and fertilizer through water transpiration. If the soil is too dry, it is difficult for the roots to absorb water and nutrients from the soil, and photosynthesis is weakened, which is easy to make old leaves turn yellow and fall off, and even plants wither and die.

However, excessive water is harmful to growth, and flooding in flood season generally does not exceed 1 week, and it can still grow as usual after water infiltration; Flooding for more than 10 days will suffocate the roots, and also cause yellowing and shedding of leaves, insufficient new shoots, poor flower bud differentiation and even plant death.

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