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Important breakthrough made in hybrid japonica rice breeding
On the 18th, the reporter learned from the Shanghai Academy of Agricultural Sciences that agricultural scientists in Shanghai have made a breakthrough in hybrid japonica rice breeding in the Yangtze River Basin. Following the acquisition of the first hybrid late japonica rice restorer line in the Yangtze River Basin to obtain national plant variety protection rights, the first southern hybrid late japonica rice combination to pass national variety approval has also been bred. At present, a series of strongly heterotic combinations have become an important support for the "seed source" of hybrid japonica rice in the Yangtze River Basin. Researchers from the Crop Breeding Institute of the Shanghai Academy of Agricultural Sciences used intermediate materials between indica and japonica subspecies as "bridge parents"
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What are the principles of watering bonsai? Mastering these few points is very important
1. The principle of watering: "Do not water when dry, water thoroughly when dry" - this is the principle of watering bonsai. It should be noted that when watering, avoid only wetting the surface soil and giving "half-way water," also called "waist-cut water," meaning the amount of water is insufficient and the pot soil is wet on top and dry below. "Half-way water," because the lower part of the pot soil is not moistened, is extremely unfavorable for tree roots to absorb water. In short, when the pot soil is dry, water enough until the pot soil is moist throughout from top to bottom. 2. Watering methods [1] Water according to season: In early spring, tree stumps begin to grow, and the amount of water needed gradually increases, but it should not be too much. When branches and leaves
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The Important Role of Montmorillonite in Keeping Crystal Shrimp
Montmorillonite for crystal shrimp is specially used for keeping ornamental crystal shrimp, with a purity of 95-98%, pH 6.5-7.5, and can be placed directly into the tank for use. Montmorillonite for crystal shrimp can stabilize water quality, keep the water at a certain hardness (GH, 4-6) and carbonate hardness (KH, 1-2), and can absorb or inhibit the production of ammonia and organic amines. It is also academically recognized that montmorillonite can serve as the main component of the bacterial culture medium for cultivating nitrifying bacteria. 1 The Efficacy of Montmorillonite for Crystal Shrimp
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Disinfection with chickens present is an important measure for green product production
Disinfection with chickens present is an effective measure for preventing and controlling avian influenza and Newcastle disease on large-scale chicken farms. It is especially necessary during periods with more spring winds, and for chicken houses housing flocks of different ages. The specific method of operation: choose an appropriate time. In winter, when temperatures are low, it is best to choose midday when the temperature is high, so the aerosol evaporates quickly, the chickens breathe it in quickly, absorb it quickly, and it takes effect quickly. In spring and summer, when the normal temperature is above 20°C, it is best to choose the afternoon or evening, when the temperature is constant and the aerosol evaporates slowly, so the floating disinfection time inside the house is long.
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How do you choose among eight types of turtles? Mastering these selection tips is important
Turtle: The male should have a blackish carapace, a thick, solid tail base, and a long, deep concave plastron; the female should have a short, thick body and a short, thick tail. It is best to choose turtles aged 8 years or older, with the female weighing 350 grams; the male need only have reached the age of gonadal maturity, and the male-to-female ratio is 2:1 to 3:1. Golden coin turtle: When selecting, hold it in your hand and turn it over; its head will extend very long, be even in thickness, and its eyes will move flexibly and look lively. The skin is glossy, the temperament is docile, the gap between the upper and lower shells at the tail is large, and the cloacal opening is broad. Turtles aged 6 years or older are required, with the female weighing 1250 grams to 15
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What to Do When Carnation Leaves Turn Yellow? Fertilizing, Watering, Sunlight and Pruning Are All Important
Mother's Day is approaching. Have your carnations bloomed, fellow flower lovers? For those who know how to grow them, getting carnations to bloom may be easy, but for beginners who have just started, they will probably run into many problems, such as yellowing leaves. So what should you do when carnation leaves turn yellow? It is actually very simple: find the cause of the yellowing carnation leaves
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Four-season care methods for potted peace lilies: water is important
The peace lily not only has a beautiful meaning, but also has upright and graceful flower stems, fresh and pleasing to the eye, making it an excellent potted plant. The flowering period of the peace lily is generally from May to August, but with careful care, it may also be possible to keep it blooming all year round. So how do you care for a potted peace lily?
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Snapdragon growing methods and precautions: pruning is very important
Snapdragon, as its name suggests, looks just like a goldfish and appears very cute, deeply loved by flower enthusiasts. Keeping goldfish at home means changing water, guarding against cats, and feeding fish food, which is really too troublesome. At times like this, you might as well try growing snapdragons, the effect is about the same~ So how do you grow snapdragons? First, you need to be careful
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Sunflower planting methods and precautions: watering is very important
Sunflowers are known for their unique flowers, and their most distinctive feature is that the flowers always open toward places with plenty of light, so more and more people like to grow them. So what is the most correct way to grow sunflowers? Today we will take a detailed look at the cultivation methods and precautions for sunflowers.
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How to grow the hooker's lips plant? Growing methods and soil selection are very important
The hooker's lips plant (Psychotria elata) is a flower with a rather unusual appearance, looking just like a person's lips, with a distinctive kind of beauty, and people in many regions grow this flower. Regarding how to grow the hooker's lips plant, what are the growing methods for it? Below, the editor takes you through it.
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