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Sources and selection methods of yellow catfish broodstock
Broodstock for artificial breeding can be directly caught and selected from rivers, lakes, reservoirs, ponds and other water bodies; this is currently the common method used by aquaculture units for artificial breeding of yellow catfish. If conditions permit, you can cultivate yellow catfish broodstock yourself and then select from them. When catching broodstock from rivers, lakes, outer waters, reservoirs or ponds, the following points should be noted: Specific requirements ① Broodstock should be caught in autumn and winter, when the water temperature is lower, which is conducive to selection and handling, and especially easy for transporting
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New Source of Crop Growth Promoter: Extracted from Mushrooms in Japan
Japan's Noda Mushroom Company has developed a growth promoter extracted from mushrooms that can promote crop growth. This growth promoter contains 4 natural plant hormones and 1 novel glycoprotein that promotes crop root growth. In trials, when this growth promoter was sprayed on the leaves or stems of crops, it accelerated the growth rate of herbaceous crops by 6 to 8 times and that of woody crops by 2 to 4 times, with no drug residue whatsoever. At present, this growth promoter has been used in the rapid seedling cultivation of crops such as forest trees, flowers and vegetables.
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An overview of the distribution of wild resources and cultivation of Angelica sinensis
Angelica sinensis prefers a cool, humid climate. Its wild resources are found only in the remote high-mountain forests within Zhang County and Zhouqu in Gansu. Angelica sinensis is always a cultivated species, and it is suited to growing in cold, damp mountainous areas at altitudes above 2000 m. All commercial Angelica sinensis comes from cultivated plants, distributed across Gansu, Ningxia, Qinghai, Yunnan, Guizhou, Shaanxi, Hubei and other provinces. It is mainly produced in Min County, Tanchang, Weiyuan, Zhang County, and Wudu, Wen County, Zhuoni, Lin County and other places in Gansu, with a long history of cultivation. Normal annual output is around 10,000 tons, accounting for about
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What is a colored wheat breeding base like? Step into the Zhongpu Resource Nursery
Step into the Zhongpu Resource Nursery colored wheat breeding base
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How to make village cadres more resourceful in getting things done
How to make village cadres "resourceful"
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Straw can be turned from waste into treasure without burning, and resource utilization brings many benefits
Straw turned from waste into treasure without burning
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The key to banning straw burning lies in addressing the root cause and solving the problem at its source.
The key to banning straw burning lies in addressing the root cause.
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How can rural dead resources be turned into living capital?
How can rural "dead resources" be turned into "living capital"?
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The lack of agricultural big data resources and the failure to share them make queries difficult
Agricultural big data lacks resources and is not shared, making it hard to query
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The source of vitality for the development of agriculture, rural areas and farmers lies in reform
Reform is the source of vitality for the development of agriculture, rural areas and farmers
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