Maintenance technology of autumn flame of American red maple and pest control of longicorn beetles

American red maple is a well-known color leaf tree species, it has a bright and eye-catching fiery red leaf color, can always make people stunned at a glance, let's learn more about it.

Characteristics of Autumn Flame of American Red Maple

1. Growing rapidly, seedlings of about 10 centimeters can grow to more than 2 meters a year. The roughness can reach 1.5 centimeters.

two。 The discoloration is unified and pure, the sense of color is strong, and the discoloration of leaves lasts for a long time. Both far and near have excellent visual effects. Compared with other hybrid red maple varieties, autumn flame red maple tree type is more elegant, more delicate, summer leaves are dark green, with strong heat resistance, and bright colors. Autumn leaves change color earlier, and the color is pure, bright red.

3. Strong cold resistance, can withstand the cold climate of more than 30 ℃ below zero.

4. Drought-resistant and barren soil, general land can be planted. The disease is very common when other varieties of red maple are planted in soils with high PH values, which can yellowing leaves and often cause sunburn in summer. In short, autumn flame red maple will have better red leaf performance than other varieties in areas with high PH value. Compared with other local red maple varieties, autumn flame red maple is more resistant to anthracnose, red spider and leafhopper, which is also the advantage of this variety.

Seedling maintenance of American red maple autumn flame

1. After controlling the humidity, immediately irrigate a permeable water, which can not only make the soil insert close to the incision, but also improve the soil moisture. Covering plastic film on the greenhouse or arch shed, spraying or spraying water in the greenhouse can increase air humidity. The amount of water sprayed should not be too large, especially in the soil, otherwise it will easily lead to death and decay at the lower end of the red maple cuttings. The amount of water sprayed is generally 2 to 3 times a day and can be sprayed 3 to 4 times at high temperature.

two。 Reduce the temperature by covering the plastic greenhouse with a sunshade net to prevent direct sunlight and reduce the temperature. It can also be treated by water spraying, ventilation and other measures.

3. Adjust the light intensity of American red maple cuttings rooting, growth, need sunlight. However, too strong light can easily lead to high temperature and burnt cuttings; too little light, weak photosynthesis, weak rooting ability and slow growth rate. In production, the sun shading net is often used to shade. That is, open the sunshade net in the early morning and evening, let the sun shine, and cover the sunshade net in the strong sunshine period from 7:30 to 19:00 to prevent the sun from burning the seedlings.

Pest control of longicorn beetles in autumn flame of American red maple

Spray dry the newly hatched larvae in the phloem with fenitrothion 500-1000 times, or 20% chrysanthemum EC 500 times, or 40% omethoate 500 times.

Using polyester drugs to control longicorn beetles, such as spraying tree trunks with high efficiency cypermethrin 1500 times liquid, or injecting longicorn beetle excretory hole with this medicine, but this effect is not very obvious.

For the larvae entering the xylem, get rid of wormhole faeces, 80% dichlorvos 50 times 100 times, or 40% acephate 100 times 200 times, or fruit tree treasure or tree doctor perfusion and so on.

Found adults, spray 2.5% propofol 2000-fold solution, or 20% chrysanthemum EC 2000-3000 times, or cypermethrin 1000-1500 times.

The spray control effect of Anoplophora glabripennis drug ("Huashi Fengbao No. 1") is the most significant, which can kill more than 99.5% of longicorn beetle adults. At the same time, the application of Huashi Fengbao No. 2 can control the further harm of the larvae of longicorn beetles and bare-shouldered longicorn beetles, make the whole longicorn beetle population extinct in the red maple forest, and rarely appear again in the coming year.

Relatively speaking, the diseases and insect pests of American red maple are relatively few, so it is relatively easy to plant, generally using the way of planting can survive, so friends who want to use some trees to decorate the courtyard can give priority to autumn flame red maple.