Copper green beautiful golden turtle
AnomalaCorpulentaMotschulsky belongs to Coleoptera, Scarabidae. It happens everywhere. Damage to cross flowers, Solanaceae and melons, legumes and other crops.
[field identification] the roots and stems of the seedlings were damaged by the larvae, resulting in the lack of seedlings and broken strips, which often occurred mixed with the larvae of the northeast black beetle. Adults like to eat the leaves of fruit trees, trees and other crops.
The adult is about 20 mm long. The head, forechest dorsal plate, scutellum and sheath are copper-green with golden luster, with fine engraving on them, and reddish brown on both sides of the head and forechest dorsal plate and both sides of the sheath wing. Each sheath wing has three distinct longitudinal ribs. The old larva is about 33 mm long, the head is yellowish brown, the body is milky white, the body is wrinkled, showing a "C" shape. The hairy area of the ventral anus and abdomen except the uncinate hair group. There are two rows of long thorns in the middle, 15-18, most of which intersect each other.
[occurrence regularity] one generation a year. The old larvae overwintered under the permafrost, and the larvae damaged the spring sowing crops in the first and middle May of the following year. The period from late June to mid-July is the period of adult damage. The larvae from early August to early October can also harm autumn crops. Adults have strong phototaxis and pseudo-death.
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Water turtle
[scientific name] Hydrocharisdubia is distributed in Europe, Asia and Oceania. The light is sufficient, the water quality is not restricted, and the suitable temperature for growth is 18mur20C, so it is easy to cultivate. Stolon transverse, plant height 8~12cm, leaves subbasal, orbicular or reniform, entire, central part swollen into air chamber. Flowers unisexual, fruit ovoid. Winter buds are used for reproduction, and they can also be sown or ramets. Can be cultivated and ornamental in water supply cluster boxes.
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Skillful management of adult fish in autumn
It is suitable to adjust the water temperature in autumn, which is the peak season for fish growth. The metabolism of pond fish is strong and there is a lot of excreta. Attention should be paid to strengthening water quality management and improving the ecological environment. First of all, it is necessary to maintain a deeper pool water in order to expand the fish carrying capacity of the water body, reduce the impact of the drop in water temperature after autumn, and prolong the feeding time. Second, it is necessary to inject new water frequently. Generally add water three or four times a month, each time the amount of water is 15 cm ~ 25 cm deep. Third, sprinkle quicklime in time. Once every semimonthly, 15kg ~ 20kg quicklime is used for every 667 square meters of water.
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