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Technical Guidance for Rice Management in the Early and Middle Stages of This Year
I. Characteristics of Rice Production This Year 1. Large mechanical transplanting area and high transplanting quality. According to reports from all towns, the city's mechanical transplanting area is 173,500 mu, accounting for 81% of the rice area, with high transplanting density, few missing hills or gaps, and suitable basic seedlings. Seedling condition monitoring data: the city's average number of hills per mu is 17,300, an increase of 1,200 hills or 7.5% over last year's 16,100; the average number of basic seedlings is 70,700, an increase of 19,200 or 33.2% over last year's 57,700. 2. Suitable transplanting period and rapid seedling establishment and growth.
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Technical Measures to Reduce the Mortality Rate of Induced Spawning Broodfish
Reducing the death of induced spawning broodfish is an important technical task in fry aquaculture. There are two main factors causing the death of induced spawning broodfish. First, broodfish consume a great deal of physical energy during the spawning and reproduction process, which increases the side effects of the inducing drugs and lowers the body's resistance. If the fish is severely injured, various pathogens will take the opportunity to infect the fish body, causing disease and leading to the death of the broodfish. Second, the broodfish has a poor physique, or the water temperature fluctuates greatly during induction, or the dosage of the inducing drugs is improper (too high or too low), so the broodfish cannot spawn normally or experiences difficult spawning, and this in turn causes its own physiological activities to become disordered and leads to death.
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Detailed Explanation of Natural Breeding Methods and Technical Key Points for Koi
Selecting excellent broodstock is the key to successful koi breeding. To use natural breeding, the first step is to select broodstock that meet the standards. In the north, koi previously kept as breeding stock are moved to outdoor ponds in mid-to-late March after spending the winter indoors. At this time, broodstock should be further carefully selected to obtain excellent offspring. (1) Selection of broodstock: Broodstock used for breeding should generally have the following: a strong physique, bright and crystalline coloration, pure lineage, distinct breed characteristics, clearly defined color patch margins with no blurred edges, no blemishes, smooth and neat scales,
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Prevention and Treatment Methods and Technical Key Points for Abscess Disease in Turtles
Turtles in nature are relatively disease-resistant and are also long-lived animals. Common turtles can live for decades, and some can live for one to two hundred years. When turtles are kept in captivity, factors such as deteriorating water quality or insufficient nutrition can easily lead to invasion by various pathogens and cause abscess disease. In recent years, with the promotion of artificial turtle farming, abscess disease has also become prevalent, and in some places the incidence rate has been rising year by year. In the early stage of the disease, a pus-filled swelling appears locally under the turtle's skin, and afterward the pus-filled swelling gradually hardens and forms a raised tumor-like mass. It can be moved when touched by hand, but the inside is hard.
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Key Technical Points and Methods for Direct Seeding Afforestation of Caragana microphylla
Caragana microphylla, a shrub or small tree of the Fabaceae (Papilionaceae) family, is extremely light-demanding, resistant to severe cold and intense heat, highly tolerant of drought and barren soil, and highly adaptable. It is an excellent tree species for sand fixation and soil conservation in deserts and grasslands. Its tender branches and fresh leaves are good fodder for livestock, especially sheep, and it is also a good firewood plantation species. Seeds can be collected for direct seeding afforestation. The seeds mature from July to August; harvest when the pods are hard and yellow-brown. The time from fruit maturity to pod dehiscence is very short, so harvest as they ripen. Dry the harvested pods in the sun and remove the pod shells and debris. Good seeds are yellow-green or cream-yellow and glossy.
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Key Technical Points for Feeding and Management of Farrowing Sows
1. Pre-farrowing preparations The gestation period of sows is generally around 110-120 days. During this stage, observation of the sows should be strengthened, and the following preparations for farrowing assistance should be made. First, choose a suitable place for the sow to give birth, then one week before the sow enters the pen, carefully clean and disinfect the farrowing house, and spread soft bedding straw. When farrowing in winter and spring, check the warming facilities of the pig house; in summer and autumn, check the heat protection and ventilation conditions inside the house. A few days before farrowing, clean the sow's body and then disinfect it. Use 0.1
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What are the key technical points for flat-planting narrow-row dense planting of soybeans?
Key technical points for flat-planting narrow-row dense planting of soybeans: 1. Seed and treatment: For variety selection, choose suitable varieties according to the local ecological type and local conditions. 2. Seed quality: It must reach Grade II improved seed or above under the seed grading standard. 3. Seed treatment: Use seed coating agent for seed dressing, selected according to the types of pests and diseases and soil conditions. 4. Rotation and tillage land preparation: For crop rotation, use a rotation of more than 3 years, do not plant continuously or on adjacent stubble, and the previous crop should mainly be wheat-type crops. For tillage, adopt mainly deep loosening, combining loosening and harrowing, to facilitate drought resistance and moisture conservation. 5
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Soybean Good Seed Propagation Methods and Key Technical Points
Soybean is a self-pollinating crop. Due to mechanical mixing, adverse climatic and cultivation conditions, and natural cross-pollination, the varietal characteristics often deteriorate. Therefore, self-pollinated seeds cannot be used long-term, and seeds should be replaced every three years. Thus, it is necessary to persist in purification and rejuvenation and carry out good propagation work to maintain the varietal characteristics of good varieties. 1. Purification and rejuvenation methods for soybean varieties (1) Line selection The commonly used method for soybean purification and rejuvenation consists of three steps: individual plant selection, line identification, and mixed high-ratio propagation. Three plots are established: an individual plant selection nursery,
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Detailed Explanation of Key Technical Points for Narrow-Row Dense Planting Cultivation of Soybean
Reducing row spacing and increasing row number, that is, narrow-row dense planting, is one of the effective ways to increase soybean yield. This cultivation method is divided into three forms: first, wide-ridge narrow-row dense planting, which is a wide-bed narrow-row dense planting cultivation method that combines the original two ridges into one ridge or one and a half ridges into one ridge. The wide ridge width is 97.5-140 cm, 4-6 rows are sown on the ridge, and the seedling stand per hectare is 400,000-500,000 plants. At present, 70 cm ridge cultivation in production can generally increase yield by about 20%. This cultivation technique is suitable for use by farmers in townships in the central-southern and eastern low-lying, wet, and waterlogged areas with relatively high productivity levels.
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