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Control methods for chilodonelliasis and trichodiniasis in freshwater white pomfret during the overwintering period
1. Pathogens: Chilodonella cyprini, Trichodina. 2. Symptoms: Both parasites attach to the skin and gills of fish, stimulating the secretion of large amounts of mucus, causing a pale blue film to form on the skin surface of diseased fish (chilodonelliasis) or a white film to appear on the fins, head, and body surface (trichodiniasis).
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A Detailed Guide to the Correct Methods of Mating and Breeding Rex Rabbits
Mating of Rex Rabbits: ① Estrus identification. Correctly identifying the estrus status of the doe and arranging the mating time promptly is the key to improving the conception rate. Estrus identification in does is carried out by observing behavior and examining the vulva. During estrus, the rabbit reduces its feed intake, becomes lively in temperament
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What preparatory work needs to be done before brooding wild ducklings?
The wild duck is a typical representative of waterfowl; the wild duck is the common name for the mallard in the Northern Hemisphere. The wild duck belongs to the class Aves, order Anseriformes, family Anatidae; its numbers are very large, and it is a general name for many kinds of wild ducks, with more than ten species. Brooding methods for wild ducklings are divided into indoor off-ground
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What should be done if a cow retains the placenta after calving? Medication should be chosen according to the specific situation
Abstract There are many treatment methods for postpartum placental retention in cows. Common ones include intrauterine infusion with hydrogen peroxide or 5%-10% hypertonic saline, and subcutaneous or intramuscular injection of oxytocin, estradiol benzoate, etc. The main causes of postpartum placental retention in cows include placental infection and inflammation,
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Raspberry cultivation is best done through asexual propagation
Raspberries propagated from seed do not easily develop into seedlings, so root sucker division propagation, layering propagation, and root cutting propagation are mostly used; where conditions permit, tissue culture propagation can be used. 1. Root sucker division propagation method: Red raspberries readily produce basal shoots, and new roots readily form on the underground parts of basal shoots. Based on this
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Lemon pruning should be done carefully; mastering the method is very important
If lemon is pruned improperly, it often only blooms without setting fruit, or sets few fruit, or even fails to bloom at all. To make lemon bloom and fruit year after year, the pruning step must be done carefully in order to achieve the goal of abundant fruit. The main purpose of pruning young trees and trees that have just begun to bear fruit is to build the crown skeleton
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Post-harvest management of peach trees cannot be relaxed; these tasks must be done well
After peach trees bear fruit, they consume a large amount of nutrients, and peach harvest happens to coincide with the rainy season. If technical management can be strengthened in time, it can increase the tree's nutrient accumulation, restore tree vigor as quickly as possible, form good flower buds, and create favorable
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Winter pruning of plum trees must be done carefully and meticulously
Plum trees enter their full-bearing period 7 years after planting. The main task of winter pruning at this stage is to maximize yield per unit area and strictly control the formation of alternate bearing and bare zones at the rear. Winter pruning principles: Heavy pruning is the main approach, combining heavy and light pruning, to maintain the balance between growth and fruiting
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What management work needs to be done before planting mangoes in the field?
1. Marking out Marking out and digging holes: The orchard is first plowed twice and harrowed twice, with deep turning and ripening to a depth of 30cm. For orchards on hillsides, planting is done along the contour. First, from top to bottom, establish a vertical baseline, and according to the baseline and the plant spacing, mark out the planting points for two contour planting rows at the middle and foot of the hillside to the left and right. Then, using two points to form a line, mark out the planting points for the other contour planting rows. For flatland orchards, use the main road and branch roads as baselines and mark points according to the specified plant and row spacing, with each planting row parallel or perpendicular to the roads. The planting hole size is 80×70×60cm, and holes should be dug 2-3 months before planting.
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When to Apply Top Dressing to Jujube Trees? A Detailed Guide to Growing Experience
Top dressing must be applied during the growing season when the jujube tree most needs nutrients. If the timing of top dressing is incorrect, the purpose of top dressing cannot be achieved, and sometimes it even has the opposite effect, reducing jujube yield and quality and wasting labor and fertilizer. According to the characteristics of the phenological phases of jujube trees, top dressing of jujube trees
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