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Fish stocking should be arranged reasonably according to water body conditions.
During a "science and technology to the countryside" activity, the author learned that many fish farmers have had unsatisfactory yields and profits over the years in pond fish farming. The main reasons are that the fish stocked were not reasonably matched according to the feeding habits and behaviors of the fish, the varieties stocked were single, the quantities were too high or too low, and the sizes were small. This situation exists to some extent all over the country. The end of the year and the beginning of the year is the season when large quantities of fish are stocked in various places. In order to make full use of the water body, stock fish reasonably, and increase the yield per unit area of the water body, the key points for reasonably stocking fish according to local water conditions are as follows.
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Why soybeans should not be grown in continuous or alternate-year cropping
Soybean continuous and alternate-year cropping control techniques can reduce the impact on yield. Impact on soybean yield. Different environments have different effects on soybean yield. ①Continuous cropping is severe, alternate-year cropping is mild; ②severe in the west and southwest, mild in the north and east; ③severe on poor land, mild on fertile land; ④severe on ridge slopes, mild in low-lying wet areas; ⑤severe in dry years, mild in rainy years; ⑥severe with no or little fertilizer, mild with more fertilizer; ⑦severe with original-ridge sowing, mild with plowed new ridges; ⑧severe with many soil-borne diseases and pests, mild with few diseases and pests; ⑨severe on long-cultivated land, mild on newly reclaimed land; ⑩severe under drought, mild with irrigation. The four eastern leagues of the Inner Mongolia Autonomous Region are each similar to their adjacent provinces, among which the Hulunbuir League area is similar to the northern part of Heilongjiang Province, and the continuous cropping phenomenon is also very severe. Today I want to discuss three issues: first, the impact of continuous and alternate-year soybean cropping on soybean yield and quality; second, the reasons for continuous and alternate-year soybean cropping; third, control techniques.
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Cotton planting method reform should be combined with autumn sowing production
In recent years, to promote high cotton yields, the Ministry of Agriculture of the People's Republic of China has carried out a 10,000-mu high-yield cotton creation activity in the major cotton-producing provinces nationwide. Recently I inspected high-yield cotton fields in Hubei, Anhui, Jiangsu, Jiangxi and other provinces, and previously also conducted surveys in high-yield cotton fields in Hunan and Zhejiang provinces. The high-yield cotton creation goals are broadly the same across regions, but the planting patterns are not entirely the same, and the planting methods each have their own particularities. Cotton yield is composed of indicators such as planting density, number of bolls per plant, boll weight and lint percentage, among which planting density is closely related to cotton yield, and planting density
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Lily seedlings should have field management strengthened early
Because last winter's temperatures were on the high side, lilies emerged earlier this year than in previous years. In Xinshao County, lilies began emerging in early March, about half a month earlier than usual. At present, underground pests have already begun causing damage; affected plants show yellowing above-ground stems and leaves, thin and weak growth, and purplish-red young stems. When the soil layer is dug open, the bottom layer of the seed bulb is seen to be rotten or the seed bulb is completely rotten, with no root system or with the root system bitten off. Since lilies emerge earlier, field management must keep pace accordingly. Early control of underground pests: the pests currently damaging lily underground seed stems and their root systems include root mites, white grubs,
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What should you pay attention to when choosing a puppy?
1. Breed of dog: First of all, you are advised to choose a purebred dog. 2. Learn about the parents: When choosing a puppy, it is best to understand the strengths and weaknesses of both the sire's and dam's breeds; puppies bought at a market are often not as good as those bought from a dog breeder's home. 3. Observe carefully: After making the right choice regarding breed and appearance, pay attention to the puppy's health. There are roughly the following points to note. Appearance: The puppy's coat should be glossy, its weight moderate, and it should be full of energy. Ears: The ears should be clean, with no unusual
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What technical points should be noted for indoor cultivation of oyster mushrooms?
Oyster mushrooms are welcomed by people for their delicious taste, short production cycle and ease of cultivation. Especially in Northeast China, where the climate is cold in winter and spring and fresh vegetables are scarce, growing oyster mushrooms indoors to supply the market is truly a good way to make money. However, a prominent problem in indoor cultivation of oyster mushrooms is that the air temperature is not easy to control and the surface layer of the substrate dries out easily, affecting oyster mushroom production. After repeated trials, the author believes that casing soil cultivation gives good results. 1. Mushroom house selection. Abandoned or temporarily unused houses can be chosen as the mushroom house (they must be repainted with limewater), and heating and ventilation facilities are required.
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What should you do if herbicide is accidentally mixed into oyster mushroom (Pleurotus ostreatus) substrate?
Herbicide should never be mixed into the substrate when growing oyster mushrooms. As for what adverse effects mixing herbicide into the substrate may have on the growth of oyster mushroom mycelium, we have not yet carried out experiments in this area. I think that mixing 50 grams of herbicide into 2000 jin of substrate is not a low concentration; even if it does not affect mycelial growth, at the very least herbicide residues will accumulate in the oyster mushroom fruiting bodies, making it very difficult to guarantee the safety and hygiene of the product. The solution is to repeatedly rinse the herbicide-containing substrate with water (5-6 times), then drain off some of the excess water, add an appropriate amount of carbendazim (reduced by about 20% from the original amount), pile it up for fermentation, and then use the original method for inoculation and cultivation.
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Pet Dog STDs Rampant: Owners Should Pay Attention to Dogs' Sexual Hygiene
A sexually transmitted disease called "transmissible venereal tumor" is running rampant among the precious dog breeds beloved by enthusiasts. Because it spreads mainly through mating, it has reached a level that demands attention. In early March this year, the beloved dog "Shali" of Mr. Zhang, manager of a certain company's Chengdu office based in Changchun, contracted this "venereal disease." This female Great Dane named "Shali," not long after being bred with another stud dog, was found to have white fluid discharging from her vulva along with a corn-sized sarcoma, and the sarcoma later grew larger and larger. It was diagnosed as a typical case of "transmissible
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What preparations should be made before first aid for a dog?
As your dog grows older, you may need to learn some emergency response measures for sudden accidents, such as it suddenly getting injured or falling ill. When you find that your dog has suddenly been injured at some unknown moment, do not panic. Remember that the purpose of any first aid measure is to stabilize the injured dog temporarily before the veterinarian arrives. Before starting, the owner must first determine whether the dog's life is in danger. If you find that the dog has stopped breathing, has no pulse or heartbeat, is bleeding continuously, or has been poisoned, you must immediately give the dog first aid. During the process, the dog may appear
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How should current rice production be managed? Technical guidance is here
At present, China's early rice production has entered the late growth stage. In southern Guangdong and Guangxi, the vast majority of early rice has entered the grain-filling stage, and a small portion has entered the maturity stage; in central Guangdong and Guangxi, heading has begun; in northern Guangdong and Guangxi, it has entered the initial heading stage to heading stage. Early rice in the middle and lower reaches of the Yangtze River has entered the milk-ripe stage and is expected to begin harvesting around July 10. Single-season rice in Northeast China is in the tillering peak stage, young panicle differentiation stage and booting stage from south to north; mid-season rice in the winter paddy field areas of Southwest China is in the booting stage, the river valley and hilly areas have begun young panicle differentiation, and the Chengdu Plain area is in the field-drying stage at the maximum tiller stage
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