Guizhou and Shanghai join hands to save the "Sesame Sword" of Guizhou indigenous fish culture
An online reporter from Jin and Guizhou learned from Luodian Fisheries Station yesterday that at present, the fisheries departments of Guizhou and Shanghai are jointly experimenting with the development of artificial domestication and breeding of spotted mackerel, in order to save the rare aquatic wild animal species of Guizhou, which is native to Guizhou, in the Pearl River basin.
"Sesame Sword" (scientific name Banji), scaleless, sharp-shaped, named for its sesame spots, lives at the bottom of rivers and feeds on small aquatic animals. Mainly distributed in the Pearl River and Yuanjiang River, its meat is tender and delicious, and it is an important economic fish in the producing area. It is known as the "four famous fish" in the Pearl River together with sea bass (sea bass), Jiayu (roll mouth fish) and mandarin fish (osmanthus fish).
This rare wild animal is only found in dozens of kilometers of rivers and Hongshui River basins in Luodian County on the border with Guizhou and Guangxi. In recent years, due to the pollution of the natural ecological environment and serious man-made illegal fishing, its number is extremely rare.
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Make sure how to protect the whole seedling of summer sesame
Ensuring the whole seedling sowing in summer sesame is an important measure to increase the yield per unit area of summer sesame. However, during the sowing period of summer sesame, the temperature is high and the weather is changeable. In case of drought, it is easy to "die on the Kang" and lack of seedlings seriously; in case of heavy rain, it is easy to "suffocate" and lack of seedlings. It is suggested that the whole seedling of summer sesame can be achieved by double-layer sowing method. Mechanized sowing, 0.7 kg per mu, sowed with a 24-row seeder, including 12 rows of deep sowing with a depth of 3-4 cm, and 12 rows of shallow sowing with a depth of 0.2 cm, twice before sowing and twice after sowing. Artificial sowing, first
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Nong Si can beat bowl flowers in sesame fields.
Liu Bengui in Shouxian County, Anhui Province called to say that bowl flowers in local sesame fields have occurred seriously in recent years, and they cannot be controlled with common herbicides, and they do not know which herbicide should be used to control this weed. According to relevant data, chemical weeding in sesame fields can be used with 48% trifluralin EC 80-100 ml per mu or 70% Pocaojing wettable powder 50-70 grams per mu before sowing, and then evenly sprayed on the soil surface after adding water, and then the soil is 3-5 cm deep, which can control annual Gramineae weeds and some broad leaves.
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