What are the main pests and diseases of Japanese red maple red mirror and how to control them?

Help you find the information, the Japanese red maple red mirror underground pests and control methods are as follows:

1.Grubs, mole crickets, etc. gnaw the seedlings and stem bases, easy to cause seedlings to die, can use Lesben 1000 times liquid or 50% phosphine emulsifiable concentrate 1000-1200 times liquid to water the roots.

2.Infestation branches and leaves of pests such as beetles, stinging moths, aphids and other commonly eaten red maple leaves, resulting in poor growth of seedlings, such as: aphids, beetle adults can be sprayed with 10% imidacloprid powder 1200-1500 times; Stinging moth can be controlled with inulin pesticides (according to the instruction manual).

3.Stem borer pests such as longhorn beetle, heartworm and so on harm the branches of red maple, resulting in the death of red maple seedlings and even the whole plant, can be sprayed in the peak period of longhorn beetle: 6-7 months with 1500-2000 times of cypermethrin liquid spray crown, spray once every half a month or so, spray 11 times in a row; Or inject pesticides such as dichlorvos or lesburn into the branches at the mouth of the insect tract and seal them with sticky soil.

Japanese red maple is native to Japan, South Korea and our country. There are more than 1,000 varieties, suitable for cold climates. Spring, summer, and autumn are red.

It has a unique color and a graceful and luxurious tree shape, the leaf shape is 5 7 lobes, mainly used for landscape greening, can be planted in lawns, hillsides, etc., and can be dotted among the evergreen trees, the red leaves are strong, dazzling, and add color to the winter garden.

1.Underground pests.

2.Scarabs, aphids, stinging moths.

3.Heartworms, longhorn beetles.

1) Harmful characteristics.

Underground pests mainly gnaw on the rhizomes of red maple seedlings, causing seedlings to die. The pests that damage shoots and leaves mainly eat away at leaves and shoots, resulting in poor growth of seedlings; Dry-boring pests are the pests that damage the branches, causing dead branches or the death of the whole plant.

2) Prevention and control methods.

For grubs, mole crickets, etc., 50% phosphine emulsifiable concentrate or 1000 times of Lesben can be used to water the roots or mix fine soil to sprinkle the ground.

For beetles, stinging moths, aphids and other pests, it is necessary to spray with avermectin, fast catching, and dimethoate 800 to 1000 times.

For pests such as heart borers and longhorn beetles, it is necessary to spray 2000 3000 times of drugs such as pyrethroid, and dichlorvos can also be injected at the mouth of the insect tract, and the mouth is sealed with mud externally to kill the larvae.

Field management of Japanese red maple is a key point of pest control.

1) Principles of prevention and control.

In accordance with the policy of "prevention first, comprehensive prevention and control", it is necessary to do a good job in prevention through the first and strongest seedling technology, and to adopt chemical, biological, physical and mechanical comprehensive control measures in a timely manner for the occurrence of pests and diseases, so as to control pests and diseases economically, safely and effectively.

2) Prevention and control measures.

1.Strictly implement the plant quarantine system stipulated by the state to prevent the spread and spread of quarantine pests and diseases.

2.Timely removal of litter due to pests and diseases, reduce the source of disease, strengthen cultivation management, strengthen tree strength, and create environmental conditions conducive to the growth of Japanese red maple seedlings and the occurrence of pests and diseases.

3.The use of pesticides is strictly implemented in accordance with the relevant provisions of the state. Choose high-efficiency, low-toxicity and low-residue pesticides, use them rationally, and control environmental pollution.

4.The main pests and diseases of Japanese red maple and their control methods are as specified in Table 2.

3) The main pests and diseases of Japanese red maple and their control methods.

Grubs, mole crickets - control methods: water the roots with 50 phosphine emulsifiable concentrate or 1000 times of Lesben liquid or mix fine soil and sprinkle it.

Scarab, aphids - control methods: avermectin, imidacloprid, fast catching, etc., spray with 1000 times water.

Moths, heart borers - control methods: green kung fu, kill pyrethroid, etc., add 3000 times water for spraying.

Gift from Jiangxi Green Agricultural Company.

The common diseases and insects of Japanese red maple are powdery mildew and longhorn beetle, once found, it is necessary to prescribe the right medicine and prevent it from spreading in time.

1. Cultivation technology.

Seedbed requirements: prefer neutral and slightly acidic loose moist soils. In mid-November, organic farm fertilizer was applied in the field, with a dosage of 3 tons per mu, and 50 kg of superphosphate and ammonium bicarbonate were evenly applied, and more than 30 cm of deep ploughing was carried out, and the fertilizer was turned into the bottom of the soil, and it was naturally decomposed and fermented for more than 3 months.

In winter, there is no need to level the land, and the soil is frozen at low temperatures to improve the soil to be loose and fertile. In early February, the ditch is opened for furrowing, the width of the furrow is 120 cm in the north-south direction, the width of the ditch is 40 cm, and the depth of the ditch is 20 cm, so as to facilitate drainage, weeding, watering, fertilization, etc.

2. Transplanting technology.

In the middle and lower reaches of the Yangtze River, it is best to plant before the germination of new shoots in late February, and pay attention to picking leaves and bringing soil balls when transplanting during the growing season. Fertilization can be applied as appropriate during the growing period, generally 2 3 times a year. The planting density of budding seedlings is 60 60 cm, two rows per furrow, and about 1000 plants can be planted per mu; 2 3-year-old seedlings are planted, each furrow is single, the spacing is 100 cm, and the water is watered thoroughly at one time after planting, and then the water is replenished according to the dry and humid weather.

Watering should be done to see dry and wet, to prevent too dry or too wet, and to avoid water accumulation when there is too much rain in summer.

3. Key points of maintenance.

1) After transplanting the bud seedlings, when the bud point is red germination in early April, cut off the rootstock at the upper part of the centimeter from the bud point, and the seedling stage is windproof, which can be tied with a small wooden stick.

2) Prevent the damage of ground tiger gnawing and longhorn beetle and leaf-eating pests, and check regularly.

3) Regular fertilization, in mid-May, early September and early October, apply compound fertilizer once for top dressing, and reapply a fermented organic fertilizer after defoliation.