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How Can the Disease Resistance of Fish Be Improved? 6 Effective Methods
Under current farming conditions, it is impossible to eliminate all pathogens. But to control the occurrence of fish diseases, we can start with scientific breeding management and maintaining the ecological balance of the aquaculture water body to improve the disease resistance of fish. As long as the measures are appropriate, we will achieve twice the result with half the effort. 1. Reasonable mixed culture. Reasonable mixed culture can not only increase the yield per unit area, but also has a certain effect on the prevention of fish diseases. Because the parasites suitable for different species of fish are not exactly the same, some parasites can only parasitize a certain species of fish,
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How can the efficacy of fishery drugs be improved? Master these five methods
Improve the binder The binder must be highly sticky, otherwise the drug will easily disperse and be lost in the water. Standard wheat flour is a relatively good binder material. For swallowing fish, it is best to make pelleted medicated bait or ball-shaped medicated bait for feeding. Add a feeding attractant Fish have a keen sense of smell; even if 1 gram of alanine is dissolved in 1 million liters of water, fish can still detect it. For example, if strongly aromatic Chinese herbal medicines such as star anise and Angelica dahurica are ground into fine powder to make a feeding attractant, and mixed into fishery drugs at a ratio of 10%-20%, or added to roasted soybean powder, wheat flour, etc., all have obvious feeding-attractant effects
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Demian 998 is a recommended variety for the cotton improved seed subsidy program.
National Approved Cotton 2010005 characteristics: a transgenic insect-resistant gene mid-early maturing hybrid variety, with a growth period of 120 days under late spring sowing in the Yellow River Basin cotton region. Strong emergence, large cotyledons, robust seedlings, strong growth throughout the growth period, good uniformity, concentrated boll setting, and smooth boll opening. Plant height 106.2 cm, plant type relatively loose, stems thick and sturdy with many hairs, leaves medium-sized and dark green, bolls oval and relatively large, first fruiting branch node at 6.9 nodes, bolls per plant 17.3, single boll weight 6.4 g. Lint percentage 41.6%, seed index 11.5 g, pre-frost flower rate
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Introduction to Xinqiu 2, a Recommended Variety under the Cotton Improved Seed Subsidy Program
National Cotton Approval 2007008 Characteristics: A transgenic insect-resistant mid-maturity hybrid first-generation variety. In the Yellow River basin cotton region, the spring-sowing growth period is 120 days. Emergence is relatively late, seedling vigor is weak, mid-season vigor is strong, and late-season vigor declines, with average leaf function. The plant type is compact, plant height 100 cm, leaves medium-sized and dark green, the first fruiting branch node is at 7.5 nodes, bolls per plant 17.6, boll ovoid, boll opening smooth, single boll weight 6.0 g, lint percentage 41.6%, seed index 10.1 g, pre-frost boll rate 96.5%.
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Introduction to the Extra-Large-Fruited Improved Peach Variety 'Qiankehong'
1. Excellent quality. The fruit is extra large, with an average single fruit weight of 500 g and the largest fruit over 1000 g. The fruit does not crack, is smooth and attractive, and develops a bright red color. The flesh is acidic in nature, crisp and tasty from the early ripening stage, and of excellent quality, with a long suitable harvest period. The stone separates easily, making it suitable as a table fruit. In addition, it makes an elegant gift for relatives and friends. This variety is currently the finest peach variety. 2. Yield performance. The tree is vigorous and well-spreading, forms flower buds relatively easily, and has the potential for early and stable high yields. In a four-season peach orchard
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What are the methods for breeding improved varieties of Schisandra chinensis?
Schisandra chinensis is a plant of the Magnoliaceae family and a valuable medicinal herb, with effects of astringing the lungs, nourishing the kidneys, stopping sweating, stopping diarrhea, and securing the essence. Schisandra chinensis prefers a humid environment (but does not tolerate waterlogging), is cold-resistant, needs moderate shade, and is suited to humus soil or loose, fertile loam. It has strong adaptability and can be grown in both northern and southern China. It often grows wild in coniferous and broad-leaved mixed forests, mountain gullies, along stream banks, among small trees and shrubs, or at forest edges and in open areas within forests. Methods for breeding improved varieties 1. Seed propagation. After the fruits are harvested in autumn, remove the flesh and wash out the seeds, then dry and store them.
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Detailed Explanation of Knowledge About Third-Grade Improved Varieties of Kernel Apricots
1. Yiwofeng Yiwofeng, also known as Cibian and Xiaolongwangmao, is one of the main cultivars in Hebei. The fruit is oval, slightly more rounded than Longwangmao, with a single fruit weight of 8.5-11.0 grams and a maximum of 15 grams. The skin is yellow, and when fully ripe it splits along the suture, freestone. Single kernel weight is 1.6-1.9 grams, and the kernel yield rate is 18.5%-20.5%. Kernel weight is 0.52-0.62 grams, kernel extraction rate is 38.2%, the kernel flesh is milky white, and the taste is sweet and fragrant. Extremely high-yielding, but not resistant to late frost. 2. Sanganqi (provisional name) Sanganqi is from He
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Which breeds are best for meat-type ducks? Two recommended improved hybrid lines
1. Digao duck The Digao duck is a large hybrid-line meat duck developed by the Australian Digao company from introduced Pekin ducks. It was introduced into China in the 1980s. Parent-stock breeder ducks of this breed were raised at the Guangdong Overseas Chinese Farm. In 1987, the Nanhai County breeding duck farm in Guangdong Province introduced parent-stock Digao ducks, and the commercial ducks produced were well received. The Digao duck's appearance is similar to that of the Pekin duck. Ducklings have red-yellow feathers, which turn white after the juvenile plumage is molted. The head is large and slightly long, the neck is thick, the back is long and broad, the breast is wide, the body is slightly long, the breast muscles are full, and the tail is slightly raised, with 2-4 sex feathers
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Anhui's 29 leading cotton varieties for this year's improved seed subsidy
Based on variety promotion in the project areas, provincial variety demonstrations and expert review, the Anhui Provincial Agricultural Bureau researched and selected 29 leading varieties for the 2008 cotton improved seed subsidy project. The specific varieties are as follows: 26 hybrid cottons, namely E-zamian No. 11, CCRI 53 (Zhongza 003), Wanmian 25 (Lingza No. 1 F1), Chuzamian 180 (D180F1), Nannong No. 6 (Nankang No. 6, GKz23), Jiza 6268, Wanmian 23 (Dangza No. 1 F1)
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Which improved varieties of processing yellow peach have been promoted in recent years
In recent years, the improved processing yellow peach varieties that have been promoted mainly include Golden Queen, Zhenghuang 2, Jinxu, Jintong 5, 6, 7, and 9, Mingxing, Dixon, and others. (1) Golden Queen: bred in New Zealand, the main canning export variety of Australia. The fruit ripens in late September. The average single fruit weight is 125 grams, uniform in size, suitable for processing. Its sugar content is higher than other canning peaches, and the canned product is golden and bright. Under cold storage conditions it can be stored until December, and it is an ideal dual-purpose variety for fresh eating and processing. High and stable yield. (2) Zhenghuang 2
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