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What technical points must be mastered for polyculture of fish, shrimp, ricefield eel, loach, crab, and crayfish?
1. Pond selection. The pond is nearly square, with surrounding ditches 8 m wide and 0.6 m-0.8 m deep, the beach surface can be raised with water to 1.2 m, the pond bottom is sandy soil, the water source and water quality are good, and water inlet and drainage facilities are complete. On the inner side of the pond, fine-mesh polyethylene netting is buried in the soil to prevent ricefield eels, loaches, red swamp crayfish, crabs, etc. from burrowing. Asbestos tiles are used as an escape-prevention wall. The pond must be strictly disinfected with quicklime and other drugs, sufficient base fertilizer applied, natural feed cultivated, and aquatic plants such as tarragon and tape grass planted. Around Qingming, a large amount of live river snails
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Feeding Methods and Technical Key Points for Juvenile Angelfish
Feed the fry opening food 5-8 hours after they leave the board and swim freely; feed them infusoria or brine shrimp nauplii. Feeding egg yolk water is no good; the fry do not like to eat it, and it fouls the water. Changing the water is unrealistic; you will find it simply cannot be done. The first feeding should be a small amount, just enough for every fish to get some. Feeding too much causes indigestion and instead kills the fish. After the first feeding, wait about 8 hours before the second feeding, so the fry have ample time to digest, adapt, and empty the "yolk water (milky mucus)" in their bellies. After that it is easy to manage; you just need to feed three times a day.
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Key Technical Points for Planting and Field Management of Shiyan Tea
Shiyan Tea, scientific name Adinandra nitida, of the genus Adinandra, is a tree. It gets its name because it grows on cliffs. Its buds and leaves are thick and fleshy, and the tea made from them has a bright liquor color. The taste is pure with a good sweet aftertaste, and it withstands repeated brewing. According to testing by relevant departments, because Shiyan Tea contains no caffeine, drinking it does not affect sleep, and it is rich in flavonoids with good health benefits, so it is deeply loved by consumers. Because Shiyan Tea resources are limited, the prospect of promoting artificial cultivation is enormous. 1. Selection of Shiyan Tea Garden The conditions that should be selected for the construction of a Shiyan Tea garden are: good soil environment; region
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What are the technical measures for summer and autumn tea production?
The output and value of summer and autumn tea each account for about half of the annual total. Doing a good job in summer and autumn tea production is crucial for securing a bumper tea harvest for the whole year and increasing local fiscal revenue and tea farmers' income. Therefore, all localities must take effective measures to strive to improve the quality of summer and autumn tea, and must work at summer and autumn tea production with the same vigor as spring tea production. To this end, the following technical measures are specifically proposed. 1. Increase topdressing and foliar spraying. Topdressing for summer and autumn tea should be applied as early as possible. Generally, topdressing should be applied promptly after spring tea ends, with fertilizers preferably quick-acting fertilizers such as 15-20 kg of urea or 20-30 kg of ammonium sulfate per mu, or decomposed manure and human and livestock waste diluted with water can also be used for watering. For foliar topdressing, add 200-250 g of urea and 100-150 g of potassium dihydrogen phosphate per 100 kg of water for spraying. Rare earth micro-fertilizers, tea leaf fertilizers and other tea leaf foliar fertilizers can also be sprayed, with better results.
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Key Technical Points and Methods for Light Pruning of Tea Plants
Light pruning is a shaping and pruning operation carried out on the basis of formative pruning, with the aim of continuing to develop the tea plant canopy and the plucking surface. The cutting position is generally raised 4-8 cm above the previous year's cut. For spring tea harvested with leaves retained, keep the spring shoots and cut off the summer and autumn shoots. For spring tea harvested without leaves retained while summer tea is harvested with leaves retained, cut off the shoot position above the true leaves retained from the summer and autumn shoots. If both spring and summer tea are harvested with leaves retained, pruning should be based on the net increase in height of the canopy surface, and the stubble left should not be too high. Light pruning is done with horizontal shears in a single pass to cut level, and the cuts should be smooth. Light pruning is best carried out in late autumn or
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Current key technical points for spring tea production management
Early picking and early marketing of spring tea, thereby increasing spring tea yield and output value, is the key to improving tea industry efficiency and increasing tea farmers' income. Combined with the actual tea production situation in Fuyang City, before spring tea picking, the main tasks are tea garden fertilization, tea tree pruning, freeze damage prevention, and tea factory and tea machine maintenance. 1. Shallow tillage and fertilization. Through shallow tillage, the soil can be loosened, the soil temperature raised, and early sprouting of spring tea promoted. Shallow tillage is generally carried out from late February to early March. When shallow tilling, combine with applying spring tea bud-promoting fertilizer. For tea gardens where base fertilizer was not applied in the previous autumn and winter, apply the spring tea bud-promoting fertilizer and base fertilizer at the same time. The amount of fertilizer applied depends on tea yield.
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Harvesting and Processing Methods and Key Technical Points for Pinellia ternata
Those propagated from tubers are harvested in the same year or the following year, while those grown from seeds can only be harvested in the 3rd to 4th year. Harvesting is generally carried out in summer or autumn after the stems and leaves wither and the plants fall over. After digging them out, pack them in baskets, wash off the mud and sand while they are still fresh, put them into gunny sacks and shake off the outer skin, then pour them out and wash the outer skin clean with clean water. Scoop them out and dry them in the sun to obtain raw Pinellia ternata. Generally, the yield of fresh tubers is 500-750 kg per mu, with a drying ratio of about 30%.
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Bonsai Creation Methods and Technical Key Points for Chinese Boxwood
Chinese boxwood, also known as small-leaved boxwood, thousand-year dwarf, etc., is an evergreen shrub or small tree of the genus Buxus in the family Buxaceae, native to the middle Yangtze River basin and areas to the south in China. It prefers warm, semi-shaded, humid climates, is drought-tolerant, cold-tolerant, and tolerant of pruning, is a shallow-rooted tree species, grows slowly, and has a long lifespan, making it an excellent tree material for bonsai. For bonsai material, one approach is propagation by sowing or cuttings, which, although it can yield large numbers of seedlings, not only takes a long time to cultivate but also makes it very difficult to obtain good material with gnarled roots and exposed claws, vigorous and ancient-looking. The second approach is digging up old stumps, and premium material is mostly obtained by
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Courtyard Cultivation Methods and Technical Key Points for Chinese Orchids
Many orchid growers use courtyards as orchid sites for orchid cultivation. The advantage is that it is close to the ecological environment of the orchid's native habitat, which is beneficial to the growth and development of the orchid plants. The disadvantage is that light, temperature, moisture, and wind force are not easy to control, and the plants are prone to natural disasters, pests, and diseases, which to a certain extent restricts the growth of the orchid plants. Therefore, the following key problems must be solved with emphasis: Light. Orchids are semi-shade plants. They cannot do without sunlight, but strong sunlight is also harmful. In winter and spring they need full light, while in summer and autumn strong direct light must be blocked. If the courtyard faces south, move the orchid plants to the front of the house in winter and spring, and to the foot of the south wall in summer and autumn. If it faces north, move them to the foot of the north wall in winter and spring, and to the front of the door in summer and autumn. In summer and autumn, shade nets must be used for shading, and the shading degree should be no less than 70%. If conditions permit, climbing plants such as grapes, loofah, and chayote can also be planted in the courtyard in summer, which can both shade and cool the orchids and provide fresh melons and fruits for eating.
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Packaging Methods and Technical Points for Cut Chrysanthemums
When cut chrysanthemums are transported over short distances or in small quantities, they usually do not need packaging and can be sent directly to the flower market; however, for long-distance transport, especially cross-border export of cut flowers, packaging is essential. When cut chrysanthemums are transported over short distances or in small quantities, they usually do not need packaging and can be sent directly to the flower market; however, for long-distance transport, especially cross-border export of cut flowers, packaging is essential. The packaging of cut chrysanthemums follows the general principles of cut flower packaging: (1) protect the product from mechanical damage, and
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