Dictyostoma is a pest of the family Diptera (Diptera: Diptera: Diptera). It is mainly responsible for the damage of leguminous crops. It was effectively cured in Dalian in the 1970s. It did not occur in 30 years. After the seed market was released, the black maggots of the bean stalks died and revived, and there was a tendency to spread rapidly. In 2005-2007, the occurrence of Drosophila in local soybean fields in Liangjiadian Town and Xingshutun Town in Jinzhou District of Dalian City reduced soybean production by 30-50%. 1, morphological characteristics. Black maggots of Douzhi are small in size and have a short migration distance. The adult was a small fly, 2.5 mm in length, with a dark body color, a blue luster on the abdomen, a dark red compound eye, three tentacles, a blunt section on the third, and a horn on the center of the dorsal horn. Mane hair, transparent fins, lavender. 2, living habits. The worm took 2-3 generations in one year in the north of Liaoning, and it took 3-5 generations in Dalian in one year. The wintering of the host rhizomes and stalks with quail was performed. The eggs were spawned and hatched in mid June of the following year. Adult phototaxis is weak, in the 25-30 °C moderate temperature and more concentrated in the upper leaf activity of the bean plant, often pierced the end of the leaf tip of the bean leaf epidermis, sucking juice, resulting in the leaf surface was spotty small injury hole. After hatching, the larvae feed on the leaves to form a small, slightly transparent tunnel. The main veins then pass through the petiole and reach the main stem, feeding on the pith and xylem. When the larvae are mature, they bite a feather hole on the stem wall and turn it around the hole. 3, damage characteristics. The stalk blackfly is mainly responsible for crops such as green beans, kidney beans, soybeans, red beans, mung beans, green soybeans (green soybeans), and leguminous vegetables. The soybean production area is the largest in the production, the loss rate is higher, and the lighter people reduce production by 30%. Severely reduce production by 50%. The larvae infested the plants and caused stalks to become hollow. The plants gradually died due to impeded transport of water and nutrients. In the seedling stage, damage is caused by water and nutrient transport, accumulation of organic nutrients, stimulation of cell proliferation, formation of rhizomes, and rusting of the ambassador's plants, which are significantly dwarfed compared to the robust plants, and those with heavy stems are hollow and the leaves fall off and die. Late damage caused flowers, pods and leaves to fall off prematurely, and the reduction in grain weight reduced the yield. 4, the reasons for the occurrence. (1) When the seeds were not quarantined, some private seed companies and large farming families trafficked seeds without quarantine, and the eggs of the blackfly were collected and brought back into the country. (2) When the marketable soybean seeds are out of stock, some seed distributors use the acquisition of edible soybeans as seeds, which are of poor quality and contain many eggs, causing rapid spread of insect pests. (3) For many consecutive years of warm winters, from 2000 to 2007, there have been continuous warm winters in Dalian and winter temperatures are high. Black fly fly worms have fewer freeze-dried eggs and a large winter base. (4) Insufficient open mouth, after the implementation of family joint contracting, the area of ​​scattered land management is small, and many soybeans are plucked and bred, even if the land is plowed down, it is also close to the similar heavy-soybean field, and the overwintering eggs are hatched immediately after hatching. Fly to nearby soybean land. 5, prevention measures. (1) Seed quarantine should be strictly carried out during the process of sowing of soybean seeds to prevent the eggs of black maggots out of infected areas. (2) Establishing seed fields in the process of soybean multiplication, do a good job of removing impurities and pests, prevent pests and diseases, improve the quality of seeds, and reduce the number of seeds with eggs. (3) Reasonably carry out crop rotation and not leave pests to survive; after the autumn harvest, clean and treat soybean straw and root pods to reduce overwintering eggs. (4) Control of chemical agents, prevention and treatment of soybean seedlings at the time, so that early prevention and early treatment can be used to spray plants with 50% phoxim EC 1000 times, control effect is more than 90%; or with 20% chrysanthemum EC 3000 times solution and 20% synergistic horse cyanide (day killing) EC sprayed plants, all have a good control effect.
Electric Over Blanket is similar to Electric Under Blanket, but a bit different.
Electric over blanket is used by covering human body to keep warm.
Normally electric over blanket is not recommended to be used during sleeping, as it might cause overheating, although it has the function of overheating protection.
Normally over blanket shuts off after 2 hours, for the sake of safety.
Below image as reference:
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