Potassium deficiency symptoms and control measures
Potassium is one of the three most important elements (nitrogen, phosphorus, potassium) in crop growth and development. Watermelon is no exception. If potassium is absent, it will not grow normally, especially the yield and quality of melons. Obvious reduction.
The symptoms of potassium deficiency in watermelon: the stems of watermelon are weak, the leaves are dark and dull, and the edges of old leaves turn brown and dry. In severe cases, it spreads to the heart leaf, making it pale brown, and even appears to be burnt.
Watermelon requires the most potassium, followed by nitrogen and phosphorus, with a ratio of 2:1.5:1. People often ignore the application of potash, resulting in the lack of potassium in the soil, leading to potassium deficiency.
[Control method]
1. Re-application of base fertilizer: The fertilizer applied to the melon field should not be excessive, otherwise the melon is not sweet and may even have a sour taste. If the cake is applied, the yield and quality are excellent. Experience has shown that the heavy application of base fertilizer, general application of farmyard manure, and the application of phosphorus, potassium and potassium-based NPK compound fertilizer, the sugar content of melon and fruit will be higher than the single application of cake fertilizer. Generally, it is calculated from 3,500 to 5,000 kilograms per 667 square meters of produced melon, 15 to 20 kilograms of pure nitrogen, 10 to 15 kilograms of pure phosphorus, and 20 to 25 kilograms of pure potassium. Therefore, every 667 square meters of farmer's fertilizer 4 000 kg, cake fertilizer 75 kg, superphosphate 25 ~ 30 kg, combined with grass ash and other substances containing more potassium, you can meet the above requirements.
2. Topdressing fertilizer: watermelon and melon should be based on nitrogen fertilizer in the vegetative growth period, and nitrogen and potassium in the reproductive growth period. Therefore, after fruit setting, it should be combined with watering and top dressing once, that is, compound fertilizer per 667 square meters. Kilograms, 10 kg of potassium sulfate.
3. Spraying chemical fertilizer: For potassium-deficient fields, potassium dihydrogen phosphate should be sprayed on the stems and leaves in time. Specifically, 50 g of potassium dihydrogen phosphate is dissolved in 50 kg of water, formulated into a 1000-fold aqueous solution, and sprayed with 667 square meters of watermelon.
A watermelon absorbed an average of 12.39 grams of potassium in life, 1.2 times and 3.4 times that of ammonia and phosphorus, respectively. In the absence of potassium, the plant's stress resistance decreased, the transporting tissue weakened, nutrient synthesis and transportation were blocked, which in turn affected the accumulation of sugar in the fruit, which significantly reduced the yield and quality of watermelon. The specific performance is as follows: the plant grows slowly, the stems are weak, the leaves are wrinkled, the edges of the old leaves become brown and die, and gradually expand inward, and in severe cases, they develop to the heart leaves, making them pale green, even the leaves There is also a burnt shape; the fruit setting rate is very low, the melon that has been sitting is small, and the sugar content is not high. Remedial measures: First, use 5-10 kg of potassium sulfate per mu (3-5 kg ​​per mu in the seedling stage; 8-10 kg per mu after stretching the vine) or 30-60 kg of grass ash to bury it; Foliar application with 0.4%-0.5% potassium sulfate solution.
This article URL: The symptoms of potassium deficiency in watermelon and prevention measures
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What is Phenibut?
Phenytoin is a "brain stimulant" that has a variety of effects on the body and nervous system. A telepath is a drug that enhances memory or stimulates a specific area of the brain. It is also used to treat conditions such as anxiety and insomnia and people with generalized anxiety disorder (GAD) may benefit from taking Fenebute. The drug of the technical name for beta - phenyl - gamma-aminobutyric acid, it is a kind of the gamma-aminobutyric acid derivatives nervous system regulator, GABA (and its derivatives, such as phenytoin sodium) has proven to have some effect, make these chemicals for the treatment of some useful not bout is a kind of promote medicine, sometimes used in the treatment of anxiety disorders, The drug was originally an "astronaut's drug".
The report cites the I.M. Herzen-Leningrad Institute in the former Soviet Union as one of the earliest sites for synthesizing phenytoin. Russian space explorers took the form of this chemical to help them deal with the need for fenebbut to treat insomnia and in modern medicine, phenobarbital has lowered blood pressure and other related effects. It has some side effects, including the effects of drug withdrawal, increased blood pressure, anxiety and insomnia. Researchers are still studying how drugs like Fennebute can help better control neurological conditions.
Due to its side effects, fenibute should not be taken first by consulting a doctor. Doctors sometimes use the drug to treat post-traumatic stress disorder in military personnel and other patients. It's also prescribed by doctors for people with specific symptoms a kind of anxiety, including social anxiety. It could even help treat other conditions, such as stuttering. In forums related to these conditions and pharmacology, individuals are attempting to educate the public about medicines. Before starting treatment with Fenebute or related medications, patients must be aware of the risks and benefits.
Consumer advocates point out that not all popular uses of these drugs have been specifically approved by the FDA, and that more attention may need to be paid to clinical trials. Government medical information sources have provided more information about the pharmacology of phenytoin sodium and information about the drug has reached the fitness community. Some people apparently believe that benibute is useful for athletes because of its relaxing properties. Fitness forums include reviews of the drug from individual users, including those who buy it over the counter. Although similar drugs are also available over the counter, individuals should seek medical attention before taking them due to reported side effects. As with Benibute, exercise can help reduce the symptoms of anxiety.
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