Common ground tigers include three tigers, yellow tigers and earth tigers. The scientific name of the small tiger Agrotis ypsilon Rottemberg, the name of the land tiger Agrotis tokionis Butler, and the name of the yellow tiger Agrotis segetum Schiffer-m

(1) Characteristics of the ground tigers include three types of tigers, yellow tigers and earth tigers. Larvae are miscellaneous and are harmful to many vegetable seedlings. The 3rd instar larvae only took leaves and formed translucent white spots or small holes. After 3rd year, they snapped off the tender stems.

Often cause serious lack of seedlings broken ridge, or even destroy the species.

(2) Morphological characteristics Take the small ground tiger as an example. Adults are 16 to 23 mm long and dark brown. The fore wings are dark gray, and the inner and outer horizontal lines divide the wings into 3 segments, with prominent ring patterns and kidney-shaped patterns. There are 1 black wedge-shaped patterns outside the kidney-shaped pattern.

The ends are opposite to the two wedge tips on the sub-outer line. On the outside of the inner horizontal line, there are five sword-like lines under the ring pattern. The hind wings are greyish white. Egg hemispherical, milky to grayish black. The mature larvae are 37 to 47 mm in length, dark brown to yellow-brown, and their bodies are covered with granules. Russet tan. The three species of adult tigers are easy to identify and their larvae are similar in shape, but the most striking feature is that the abdomen of the yellow tiger larvae has two large brownish-brown spots in the abdomen of the larvae, and there are two bristles in the abdomen of the larvae of the earthworm. It is almost a whole dark brown spot.

(1) Living habits Tigers have 4 generations in the north in 1 year. Overwintering adulthood occurs in early March. There are significant multi-discovery images of 1 generation. Adults tend to have strong tropism toward black light and sweet and sour substances. They prefer to lay eggs at a height of less than 3 cm.

Seedlings or prickly pods on weeds or on ground clods. In mid- and late April, the larvae of 2 to 3 instars are in the prosperous period, and in mid-May, the larvae of 5 to 6 instars are in the prosperous period. The larvae after the third instar are seriously damaged.

The larvae have a pseudo-dead nature and shrink into rings when they are disturbed. Small ground tigers do not have diapause, conditions suitable for continuous breeding damage.

The fifth-generation larvae in Beijing are the most injurious and lighter in other generations. The living habits of yellow tigers are similar to those of small tigers. The main difference is that yellow tigers lay eggs on the roots and stems of crops, often in a string arrangement. Larval larvae have suffered more than one month later than the small tigers. The lands with extensive management and weeds are seriously affected. The land tigers took 1 generation in 1 year. Often mixed with small ground tigers, spring field temperatures close to 8 ~ 10 °C when the larvae began to feed, field temperature reached 20. 5 °C, the old mature larvae began to distress over summer, over the summer period up to 3 months . Fall eclosion is adult.

(2) Control methods

1 Physical control Adults were killed by sweet and sour liquid and black light, and larvae were killed by paulownia leaves.

2 poison bait trap larvae 5 kg bait fry, with 90% trichlorfon 150 g add water and mix, from 1.5 to 2.5 kg per acre.

3 Chemical control Spray with 20% cypermethrin 2000 times solution to control 3rd instar larvae, or use 25% iminophos (aka R-1504, PMP) EC 250 times to root.

Cotton Gauze Baby Towel

Gauze bath towel

Structure and composition: It is made of medical degreased gauze by cutting, folding, sewing or trimming.

Product performance: Gauze is soft, breathable, highly absorbent, easy to wash and dry, and the softer the more washing.

Model specifications: Regular size 80 * 90/90 * 160, exquisite gift box, can be customized according to customer needs.

Scope of application: It is suitable for the cleaning and protection of the baby's body surface, a necessity for newborns, and a good choice for gifts.

Gauze bath towel , baby towel

Shaoxing Gangfeng Hospital Products Co.,Ltd. , https://www.gangfenggauze.com