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Key Technical Points of Soil Testing and Formula Fertilization for Rice
Based on the technical principles of soil testing and formula fertilization, and combined with the actual work of soil testing and formula fertilization in Pulandian City, 10 technical steps in the experimental process of soil testing and formula fertilization for rice were summarized. 1. Site selection: Select locally representative plots, and arrange experimental plots according to the areas of high-, medium-, and low-fertility farmland. The fertility status of the experimental site should be uniform and consistent, and the fertilization status of the previous crop should be as similar as possible. 2. Soil sampling and testing: Collect soil samples before plowing, using a "plum blossom shape" or "snake shape" to take 15-20 points, with a vertical depth of
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Detailed Explanation of Key Technical Points for Soil Testing and Formulated Fertilization in Rice
I. Fertilization Principles 1. Soil testing and formulated fertilization for rice should follow the principles of determining yield target based on soil, determining fertilizer rate based on yield target, supplementing deficient nutrients, combining organic and inorganic fertilizers, and balanced application of nitrogen, phosphorus and potassium. First, soil testing is required. Soil testing is the prerequisite for soil testing and formulated fertilization; through analysis and determination of soil nutrients, the soil nutrient status and fertilizer supply capacity can be accurately grasped, providing a scientific basis for formulated fertilization. Second, a good formula must be prepared. The formula is the key to fertilization. On the basis of soil testing, according to soil characteristics, cultivation practices, crop nutrient requirements, production level and climate conditions,
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DNA testing confirms the Formosan landlocked salmon is a species endemic to Taiwan, China
Taiwan's Shei-Pa National Park announced the results of its conservation research program, among which research on Taiwan salmon, also known as the Formosan landlocked salmon, has made a major breakthrough. Through DNA sequence mapping analysis, it has for the first time been confirmed that the Formosan landlocked salmon is a native species endemic to the Taiwan region of China, and did not evolve from the landlocked form of masu salmon introduced from Japan or from rainbow trout that escaped from farms, but is truly a unique variety endemic to Taiwan. According to a report by Taiwan's Eastern Broadcasting, Taiwan salmon, formerly named Formosan landlocked salmon and also known as Taiwan trout, Lishan trout and Cishan trout, is the only temperate fish species in the subtropical Taiwan region, China,
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Detailed Explanation of the Technology for Rapid Propagation of Virus-Free Potato Test-Tube Plantlets
Potato is the fifth-largest crop in Heilongjiang Province, ranking only after rice, wheat, corn, and soybean. It is a crop that can be used for multiple purposes such as food, vegetables, and industrial raw materials. Potato is still an emerging industry in Heilongjiang Province, with a history of only about twenty years. The formation and development of this industry was born alongside the research and development of virus-free potato technology. Through the smooth implementation of the "institute-county joint development" poverty alleviation and development project, and under the guidance of experts and professors from the Provincial Academy of Agricultural Sciences, Huanchuan County established virus-free
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What are the latest rice breeding technologies? A full analysis of the world's cutting-edge methods
Research on salt-tolerant rice breeding The aims of this research are: 1. To enable new salt-tolerant rice to adapt to cultivation in saline-alkali land. 2. To make full use of seawater irrigation when freshwater is scarce. Abroad, there have been reports of salt-tolerant crops such as tomato, melon and barley. Salt-tolerant rice bred by the University of Sussex in the UK can grow vigorously in the field, but the complexity of regulating salt content in the field must be recognized. Research on genetic engineering of salt-tolerant rice is quite active in the UK. Researchers insert genes from salt-tolerant rice into rice,
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Experimental Study on Factory-Scale Rapid Propagation Technology of Potato Test-Tube Plantlets
For many years, farmers' own propagation, self-breeding and seed retention have caused potato yields to decline year by year during production, quality to deteriorate, and commercial appearance to worsen. Scientists have proven through research that virus infection and its accumulation in tubers are the main causes of potato "degeneration." To solve the problem of severe degeneration and reduced yield of the main potato cultivars in our city, our institute made virus-free potato production a key experimental project and conducted experimental research on the problems existing in virus-free production, thereby utilizing resources and reducing production costs.
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Symptoms and Prevention and Treatment Methods of Fish Intestinal Fungal Disease
The pathogen is Basidiobolus sp., belonging to the class Zygomycetes, order Entomophthorales, family Basidiobolaceae. Symptoms: The anterior abdomen and the area in front of the anus of diseased fish are noticeably swollen, forming two white protrusions. Because the anus is blocked, the diseased fish cannot defecate and soon dies. After death, the abdominal wall quickly rots through, exposing the viscous internal organs. Dissection of diseased fish reveals a white, sticky, fat-like substance coating the outside of the stomach and intestines; the intestines become thickened and white, with a thinned intestinal wall, and the interior is filled with hyphae and their conidia, especially densely packed at the end of the intestine. In a small number of diseased fish, hyphae are also distributed in the stomach, but no infection was observed
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Latest research progress made in the potato genome project
News from New York on March 31: the Potato Genome Sequencing Consortium (PGSC) said that the Dutch government will contribute 3 million euros (about 3.6 million US dollars) to sequence the first potato chromosome, and, in cooperation with research organizations from other countries, complete the sequencing of the potato genome (840 Mb) in 2010, making a contribution to the future global food supply. PGSC
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Home-style recipe for spicy pork intestine boiled fish, delicious and great with rice
Ingredients for pork intestine boiled fish: pork intestine, grass carp, Pixian douban (fermented broad bean paste), ginger, scallion, garlic, dried chili, sesame oil, celtuce, garlic sprouts, Chinese celery. Method: wash the pork intestine using a special method, then cut into small sections; slice the grass carp into fillets, marinate with salt, yellow rice wine and shredded ginger, and marinate the head and tail separately on another plate; stir-fry celtuce and other ingredients as the base; add the seasonings to the wok and stir-fry, and once the aroma comes out, add the head and tail, fish fillets and pork intestine, and cook them together in a secret-recipe sauce pot. Features: pork intestine and boiled fish are mostly seen "fighting alone", but now the two are combined in one pot,
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How to grow Gastrodia elata for high yields? A detailed guide to the latest cultivation techniques
Gastrodia elata is a precious Chinese medicinal herb, containing nutrients such as gastrodin, calcium oxide, magnesium oxide, vanillyl alcohol, and vitamin A. It has the functions of dispelling wind and relieving convulsions, relieving pain, resisting convulsions, and lowering blood pressure. It mainly treats headache, dizziness, high blood pressure, rheumatic waist and knee pain, numbness of the limbs, infantile convulsions, insomnia, and cerebrovascular diseases. It has important value in medicine, and currently the product is in short supply, with prices rising year after year, reaching more than 200 yuan per kilogram, and export prices are even more expensive. Gastrodia elata used to be wild, generally growing in mountain forests at an altitude of 500-150
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