Chinese name: Syzygium moth Latin scientific name: Amphipoea fucosa (freyer) Distribution area: northeast, northwest, spring wheat area of ​​north China, Tibet plateau, middle and lower reaches of the Yangtze River and East China wheat producing area Morphological characteristics: Adult gray brown, body length 13-16 mm The wingspan 30 to 36 mm. The forewings are brownish or grayish black with 5 brown lines. Rings and kidneys are white or dark yellow. Eggs are semi-circular, milky white and brown before hatching. The larvae are gray-white with yellow heads. There are brown lines on both sides of the ventral midline, and dark brown spots on the eighth and ninth section of the abdomen. The mature larvae are 30-35 mm long. Reddish-brown, with a sharp stipple on the front of the 5th to 8th section of the back, with 2 tails and a hook-like forward bend. Damaged crops: Wheat, barley, buckwheat, alfalfa, and wild hosts have symptoms of damage caused by oats, reeds, and alkaloids: Spodoptera exigua is larvae-infested; young larvae gnaw stems to feed on plant tissues, and after 4th instar, the barley ground bite Rotten, the wheat plant showed a dead heart shape, the whole plant died after the development, resulting in lack of seedling broken. Even destroy the species. Classification properties: Lepidoptera, Noctuidae Onset Characteristics: Northern spring wheat occurs one generation a year, wintering with eggs. Incubation began in mid-May of the following year. The larvae of the third instar larvae were damaged. After the fourth instar, they were eroded from the ground of the wheat straw and continued to harm other plants. From May to late June, they entered the stage of damage, and the larval period was about 50 days. About larvae were destroyed after being cooked by the mature larvae from June to mid-July. The phlegm-removing larvae were mostly on the soil surface of 1-3 cm underground near the affected plants. Fever period 15 to 20 days. From July to mid-August, it enters the peak of emergence, and the adults enter the spawning period immediately after they have grown. Adult phototaxis is strong, and the use of black light can attract a large number of adults. Adults spend days and nights, hiding in the wet grass and crop fields during the day, and feeding, mating, and spawning until late at night. Eggs prolific in the stem of the stem sheath inside the underground l ~ 3 cm, was blocky, each 20 to 30, each female can lay about 200 eggs, more than 400 tablets. The wheat pieces left in the pods are ploughed to the depths of 5 to 10 centimeters with the fall tillage. If they are turned into the 15-25 cm deep soil layer, some larvae will not be able to excavate after the spring larvae hatch, which will reduce the occurrence of insect sources. . Sooner or later, the hatching of overwintering eggs will be related to soil temperature sooner or later. The high soil temperature occurs earlier, while the low soil temperature occurs later. Control methods: (1) Agricultural control 1 Deeply exterminate the eggs and turn the root larvae below 15 cm soil layer to increase the mortality of newly hatched larvae. 2 The period of proper irrigation of larvae is the wheat three-leaf stage. Irrigation in wheat fields can control young larvae. 8 Remove the roots, remove the roots and burn them to reduce the amount of overwintering eggs. (2) Light trapping Adults use 20-watt black light to trap and kill adults (which can be combined with other pests to trap poison). (3) Chemical control uses 4% phoxim granules, or 0.5% sulphur phospho-granules, 1.5 to 2 kg per mu. When sowing, it is applied to the soil with the seeds. Larvae may also be used for larval feeding. Common Agents: Phoxim
8MP Fixed IR Turret Camera,8MP Fixed IR Bullet Camera,8MP Motorized IR Bullet Camera,8MP Motorized IR Turret Camera
Tiandy Technologies CO.,LTD , https://overseas.tiandy.com