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Privet is an evergreen broadleaf tree species with strong resistance to pollution.
Privet is an evergreen tree of the genus Ligustrum in the olive family (Oleaceae). 1. Habits: Privet is native to China and Japan. It is light-demanding but tolerant of shade, prefers a warm, humid climate, and is suited to slightly acidic to slightly alkaline or calcareous soils. It can also grow in clayey soil with a salt content of 0.2%, can withstand low temperatures of -12°C, and is not tolerant of poor, thin soils. It is deep-rooted with well-developed fibrous roots, grows quickly, has strong sprouting ability, and tolerates pruning. It is not strict about climate, but is best planted in humid, sheltered, sunny spots, and grows especially well in deep, fertile soil rich in humus.
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Key Technical Points for Disease Prevention and Control in Pollution-Free Fish Farming
Symbiosis of plants and animals: When aquatic plants and fish live together in the same pond, the fish rarely get sick. The aquatic plants planted in the fish pond are rice or lotus roots, arranged in an east-west direction, with wide row spacing (greater than 33 cm), occupying no more than 50% of the total water area so that the lighting effect is good. The water depth depends on the water tolerance of the aquatic plants; for rice it is generally within 30 cm, and for lotus roots it can generally reach more than 50 cm. The farmed fish can be conventional species or famous, special and improved new varieties. The farming method can be seedling breeding or adult fish farming. Because residual bait, fish feces and so on are deposited
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Pollution-free Cultivation Techniques for Pleurotus pulmonarius at High Altitudes in Summer
Pleurotus pulmonarius, also known as yellow-white oyster mushroom, lung-shaped oyster mushroom, pocket mushroom, Ji pinggu, small pinggu, etc., taxonomically belongs to the phylum Fungi, subphylum Basidiomycotina, class Hymenomycetes, order Agaricales, family Pleurotaceae, genus Pleurotus, and is named for its elegant appearance and delicious taste. Pleurotus pulmonarius is rich in protein, sugars, vitamins, and trace elements such as iron and calcium; in particular, its protein content is higher than that of button mushrooms, shiitake mushrooms, straw mushrooms, and other edible fungi, hence it is also called the "finest of mushrooms." Pleurotus pulmonarius can be stir-fried, cooked in soup, or used for hot pot, and is deeply favored by consumers; its market sales and
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Key Technical Points for Mimicking Wild, Pollution-Free Cultivation of Maitake (Grifola frondosa)
Crop straw and forestry by-products accumulate in enormous annual quantities, providing abundant raw materials for the production of edible fungi. How to produce pollution-free, safe, high-quality, pollution-free edible fungus products is an important issue facing the edible fungus industry. The following introduces pollution-free cultivation techniques for mimicking wild maitake (Grifola frondosa), based on the national pollution-free edible fungus production technical standards. Optimal selection of cultivation sites and raw materials: edible fungi have a strong ability to accumulate harmful heavy metals, so cultivation sites and raw materials for maitake must be carefully selected to minimize the accumulation of harmful substances brought about by the cultivation site and raw materials. ①
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What are the key points of pollution-free cultivation techniques for edible fungi?
Production environment: Pollution-free spawn factories, incubation rooms, mushroom houses or mushroom sheds should all be built in places with high terrain, convenient drainage and irrigation, no factory pollution or garbage dumps nearby, and far away from livestock and poultry sheds, feed warehouses and toilets. Raw materials: The various raw materials for pollution-free cultivation of edible fungi, such as cottonseed hulls, straw, sawdust, bran, etc., should be dry, free from mildew and insect damage, and must not be contaminated or mixed with other pollutants. The chemicals used, such as gypsum, calcium carbonate, urea, etc., should be pure, and counterfeit or inferior products must not be used. Substrate treatment 1. The substrate must undergo high-temperature fermentation.
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What are the pollution-free control methods for the jujube looper moth?
The control principle is to make use of its characteristics of overwintering under the tree and the wingless female moth, strengthen control efforts under the tree, and eliminate or stop the female moths from climbing the tree to lay eggs. Large-scale control can reduce the insect population by 80%-90%. On this basis, to eliminate the larvae that slip through the net on the tree, pollution-free pesticides can be used for control. 1. Artificial pupa digging. Before the adults emerge in spring, turn the soil within 1 m around the tree and 15 cm deep to dig out pupae, collect the pupa clumps and dispose of them in a centralized manner. You can also deep-plow the tree in autumn to destroy its overwintering sites so that it cannot
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Key Technical Points for Pollution-Free Control of Edible Mushroom Pests
Technical Introduction: Edible mushrooms, from spawn production and mycelial running to fruiting, are highly susceptible at every stage to invasion and damage by dozens of pests and pathogens, including various contaminating microorganisms, diseases, insect pests, nematodes and pest mites. Moreover, as the number of years of edible mushroom cultivation increases, the occurrence and damage of these harmful organisms have become a major factor limiting and restricting the continued development of edible mushroom production. This technology comprehensively integrates agricultural, physical and chemical control methods, and can effectively control the occurrence and damage of edible mushroom pests. Core technical contents (1) Edible
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Six Key Technologies for Pollution-Free Production of Edible Fungi
I. Improve the Ecological Environment The cultivation site should be chosen close to a water source, with good air flow, open space on all sides, and at least 1500 m away from livestock and poultry farms, breweries, residential areas and hospitals. Measures such as turning the soil, sun-bleaching and flooding should be adopted instead of chemical pesticides for disinfection. The water source and water quality must be clean and free of pollution. It is strictly forbidden to spray or soak mushrooms with sewage. Mushroom roots, dead mushrooms, insect-damaged mushrooms and discarded culture medium must not be stored inside or outside cultivation and processing facilities. II. Reasonably Select Raw Materials In strict accordance with the new requirements of WTO/SPS plant quarantine, the cottonseed hulls, wheat straw, corn
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How to determine if fish are suffering from pollution poisoning
Fish deaths can be caused by many factors such as disease, oxygen deficiency, toxic algae, mechanical injury, and pollution poisoning, and pollution poisoning is the most common type of fatal cause. Below are several methods for visually judging common types of pollution poisoning, for reference in production. Heavy metal pollution poisoning. Heavy metals refer to metals with relatively high density, such as lead, manganese, zinc, etc. The gills of poisoned fish appear grayish-white and secrete large amounts of mucus, forming flocculent deposits that block the gills and cause respiratory impairment; poisoned fish often float and swim at the water surface.
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A detailed explanation of the guidelines for the use of pollution-free fishery drugs: scientific medication is safer
Although fishery drugs can treat diseases of the farmed fish, shrimp and crabs, because aquatic products will ultimately be placed on people's dining tables, attention must be paid to the safety of the drugs used to prevent and treat their diseases. To prevent harmful substances contained in aquatic products from harming human health, the Food Hygiene Law stipulates that aquatic products such as fish, shrimp and crabs must not contain antibiotics or synthetic antibacterial agents or other substances harmful to human health. To prevent drug residues, it is necessary to understand the correct methods of drug use and the withdrawal period. The relevant national authorities have issued the "Pollution-Free Food
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