Model NO.: Fr 66/8/10/12/14/16/18/10/24/26/28
Logo Printing: With Logo Printing
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- Model NO.: double needle thread …
With strong adaptability, wild maggots are widely distributed and can grow from 50 meters to 2800 meters above sea level, but they are distributed at an altitude of 600-900 meters. Mostly grown in dry, sunny, 10-35 degrees slope, slightly acidic sandy loam soil distribution, the general buried…
Duck laying period can be divided into four stages: 20-27 weeks old egg production, 27-30 weeks old egg production, 30-48 weeks egg production peak, 48-60 weeks old For the later stages of egg production, the main points of feeding and management are different in these four stages. First, the …
In the coastal area of ​​Zhejiang Province, the eggs of the snails are seen on the mudflats from March to November. However, drastic changes in ocean hydrology, weather, etc. have a greater impact on the embryonic development of the eggs of the snails. Therefore, it is necessary …
Morphological characteristics
The grouper is long and oval in shape with its sides flat and stout. The mouth is large, with a well-developed auxiliary maxilla, with a large number of large canine teeth at the front and bottom jaws, and finely pointed teeth on both sides, which can be …
The grouper is long and oval in shape with its sides flat and stout. The mouth is large, with a well-developed auxiliary maxilla, with a large number of large canine teeth at the front and bottom jaws, and finely pointed teeth on both sides, which can be …
In recent years, factory-cultivated marine fishes have rapidly emerged throughout the country, and shrimp cultured seawater fishes have received less investment in their equipment and materials, and they have gained high benefits and become known. The more upscale saltwater fish, Shijiu, is fa…
Soil and fertilizer management can adopt a grass-grazing system for mature organic walnut orchards. The cultivation of grass under the walnut garden has the advantages of reducing water evaporation, reducing dust, improving soil fertility, promoting…
1. It is not suitable to apply large amounts of uncooked cakes and fat cakes with small carbon-nitrogen ratios, fast decomposition, and easy to produce high temperatures and high concentrations of ammonia and organic acids, which can easily cause burning of roots. The cake fat should be broken…