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Koi farmer Deng Runqiu breeds top-quality fish by selecting the best from a hundred
Deng Runqiu: breeding good koi by "selecting one from a hundred"
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Farmers must be well guided in selecting seeds to safeguard agricultural production
Farmers must be well guided in selecting seeds
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What Is Improved Rice Seed? A Detailed Guide to Selecting Seed Varieties Adapted to Local Conditions
Improved rice seed has relatively stable, specific heredity, as well as relative biological, economic and morphological uniformity. In a specific region, under specific cultivation conditions and within a specific period, it meets production needs in terms of yield, maturity period, quality and adaptability. Besides possessing the basic qualifications of a variety, improved rice seed must also have advantages such as high and stable yield, excellent grain quality, disease resistance, insect resistance and strong stress resistance. A good rice seed should include 3 aspects: first, it must have high yield, high quality,
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Methods for Selecting and Preparing Land for Notoginseng Seedling Beds
Choose a shady slope on the back side, with a gradient of about 5°-10°, well-drained soil, loose texture, and a granular structure of red soil or brown-red soil. A slightly acidic soil with a pH of 5.5-7.0 is suitable, while heavy clay soil easily causes root rot and should not be used. Plow the land multiple times 2-3 months before sowing to a depth of 30 cm to let the soil weather, and at the same time thoroughly remove weeds, tree roots, and stones. In conjunction with plowing, apply 75 kg of lime per mu or 25 g/m2 of 50% carbendazim wettable powder mixed into the soil for soil disinfection treatment.
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Things to Keep in Mind When Selecting Fish Fingerlings in Winter and Spring
1. Pay attention to whether the fingerlings are uniform. If the fingerlings in the same pond vary in size, have relatively straight belly lines, thin and elongated tails, and slender bodies, then after being placed in a fish cage for 30 minutes they will show weak, sluggish movement, and some may even show symptoms of disease. Such fish cannot be stocked into ponds, nor are they suitable for long-distance transport; you may reduce the stocking density or move them to fertilized water for rearing. If they are indeed diseased, timely treatment is also needed. 2. Pay attention to the body length of the fingerlings. Whenever seining exercise is carried out, the fingerlings jump vigorously
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8 Precautions for Selecting Superior Soybean Seeds
1. Pay attention to the seed purity and germination rate. 2. Pay attention to whether free consultation and technical guidance are promised. 3. Pay attention to whether sales outlets have been set up indiscriminately. 4. When mail-ordering seeds, pay attention to sending money via the local post office (branch); do not enclose cash in the letter. Clearly write your detailed address and name, and note the variety and quantity purchased in the remarks column. 5. Pay attention to clearly identifying the trademark and packaging marks. 6. Pay attention to agreeing on the seed price. 7. Pay attention to whether seed quality is guaranteed. 8. Pay attention to contacting by phone or letter before introducing a variety, and you may also consult the relevant units.
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What are the methods for selecting Gastrodia elata fungus strains and Gastrodia elata seeds?
1. Armillaria mellea: Some Armillaria mellea varieties are high-yielding and high-quality, while some varieties instead harm and feed on Gastrodia elata, so farmers must be cautious when introducing strains. Our company promotes the Armillaria mellea a-9 variety, selected by the Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, from numerous varieties at home and abroad. Large-scale application and promotion have shown that this variety has strong vitality, dense branching, a high colonization rate, high yield, and high quality, making it the preferred superior variety for cultivating Gastrodia elata. 2. Germination fungus: The germination of Gastrodia elata seeds must rely on the infection of the embryo by fungal hyphae of a Mycena species to provide
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What are the easily overlooked problems in the process of selecting and retaining replacement gilts?
(1) The selection and retention procedure is unreasonable, and the selection process is simplified: In some pig farms, the selection and retention process for replacement gilts is very simple, with no fixed procedure. It is only after the breeding pigs finish testing that a simple evaluation is made and they are selected and retained. This can easily lead to an imbalance in the number of animals retained from each bloodline and a decline in the production performance of breeding pigs. Therefore, the selection and retention of replacement gilts must rely on a fixed procedure. Generally, the selection and retention of replacement gilts must go through three processes: primary selection, intermediate selection and final selection. Primary selection is when moving from the farrowing stage to the rearing stage, determining a candidate group 4 times the number to be retained for breeding; intermediate selection refers to the period from nursery to fattening
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What are the methods for selecting a nursery site for almond seedling cultivation?
The selection of the nursery site is key to the success or failure of seedling cultivation. Choosing an unsuitable site will not only affect the yield and quality of the seedlings but may even waste all the previous effort. For almond nursery sites, it is advisable to choose flat terrain, fertile soil, deep soil layers, a groundwater level below 1.5 m, good irrigation and drainage conditions, and loose-textured neutral loam and sandy loam. Soil that is too clayey tends to become compacted, affecting seedling emergence and the growth and development of the seedlings. Nursery sites must absolutely avoid continuous cropping, as continuous cropping leads to the occurrence of diseases and affects the survival rate and growth and development of the seedlings. Any land where stone fruit tree seedlings have been grown
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Cotton seed: never harvest prematurely opened bolls; pay attention when saving and selecting seed
According to data from seed management department testing, in recent years the germination rate of some cotton seed has been only around 60%, still far from the national standard of 80% germination rate. From extensive surveys, the reasons for low cotton seed germination rates are: first, harvesting immature prematurely opened bolls; second, purchasing "favor bolls" with high moisture content; third, mixing in diseased seed from rotten cotton bolls; fourth, storing cotton seed in the warehouse before it is fully sun-dried; fifth, containing some cotton seed broken during processing; sixth, relatively high residual acid content in coated cotton seed; seventh, not strictly
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