Successful breeding of new silkworm varieties in Hubei
The new silkworm varieties "Ecan 3, Ecan 4" bred by Economic Crops Research Institute of Hubei Province Academy of Agricultural Sciences (Zip code: 430070 Tel: 027-87389436) won the first prize of scientific and technological progress in Hubei Province not long ago.
Compared with Huanghe × Zhaoxia, the strongest variety for autumn use in Hubei Province, Ecan No. 3 has strong resistance, the pupa unified life rate reaches more than 92%, the yield is high, the cocoon yield is 33.95 kg, which is increased by 9.94%, the silk quality is excellent, the cocoon shell rate is 24.83%, the length of one cocoon silk is 1150 meters, the length of uncoiled silk is 941 meters, and the silk yield is 17.88%, which is increased by 8-16% respectively.
Ecan 4, a variety used in spring and autumn, has higher resistance, pupa life rate over 93%, cocoon yield 34.2 kg, cocoon shell rate 23.92%, cocoon filament length 1198 m, uncoiled filament length 880 m, silk yield 18.80%, increased 10-14%, compared with Huanghe × Zhaoxia, the main autumn variety in Hubei Province.
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Prevention and treatment of urea poisoning in deer
Urea is a widely used chemical fertilizer in agriculture, and it is a kind of non-protein nitrogen. The use of urea or ammonium salt in diets instead of protein to feed deer has been widely used. However, excessive preparation of urea in the diet or uneven mixing, or grazing in the areas where urea fertilizer is applied, can cause poisoning. [etiology]: urea and many non-protein nitrogen compounds are good protein substitutes and are often used as feed additives, such as urea, biuret and bisammonium phosphate. However, excessive feeding or improper feeding can produce a large amount of ammonia, which is one of the most important factors in the body.
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Organization and management of mating wasps
The mating colony organizes mating for the small colony that the new queen bee lives, either on the 10th day after the removal or the 7th day after the king platform is sealed. To organize the mating group, you must first prepare the trunk. The standard beehive can be closely divided into 3 or 4 small areas with 2 or 3 gates. Each community can hold 2-3 nests and spleen, and open 1-3 mm long and 8 mm wide nest doors in different directions. The wall of the box in front of each nest is painted with different colors such as yellow, blue and white, so that the queen bee can identify her own hive. Put a box seal with baby bees in each district of the trunk.
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