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What are the temperature requirements for soybean growth and development?
Soybean is a warmth-loving crop, and the accumulated temperature required by soybean varieties in Heilongjiang Province is about 1800-2700°C. (1) The optimum temperature for seed germination is 18-20°C, at which germination is fast and seedlings emerge evenly; the minimum temperature is 6-8°C, but germination is very slow; when the temperature reaches 33-36°C, germination is fastest, but the seedlings are weak. (2) The minimum temperature required for emergence is 8-10°C. (3) For flower bud differentiation, 21-23°C is more suitable. For flowering, 22-25°C is more suitable. If the temperature is too high or too low, there will be fewer flowers. (4) The suitable
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What are the responses of soybean growth and development to light?
Soybean is a short-day crop, with a daylength range of 9-18 hours. The shorter the light, the more it promotes flower bud differentiation and advances flowering and maturity. When soybean grows its first compound leaf, it begins to respond to light. Generally, seedlings can complete the light stage after 5-12 days of short-day conditions. The appearance of flower calyx primordia on the plant marks the completion of the light stage. Due to long-term adaptation to light conditions in different regions, the short-day response of soybean varies considerably. Southern soybean varieties have a stronger short-day response, while northern soybean varieties are insensitive to daylength, so special attention should be paid when introducing varieties.
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Eight Major Disease Prevention and Control Measures for the Green Development of Mushrooms
Establish the "big prevention and control" concept of integrated management. The occurrence, and even the epidemic or outbreak, of edible mushroom diseases all follows certain developmental patterns. Patterns are science, and no carelessness is tolerated. On the surface, diseases appear only at a certain production stage, but the occurrence of disease requires quite a few conditions. If any one condition cannot be met, the occurrence of disease may be reduced, lowered, or even impossible, or even if it occurs, it cannot cause harm. Therefore, one should not only prevent or treat at the stage where the disease occurs, but should start from the source
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How to manage greenhouse apricots in spring? Focus on management to promote development
For apricot trees in a winter-warm greenhouse, the fruit development period runs from mid-February to the end of April, and this period is divided into three main development stages. The first stage is the first rapid growth period of the apricot tree and the new shoot growth period, lasting 28-34 days; the second stage is the pit-hardening period, lasting 8-12 days; the third stage is the second rapid growth period of the apricot fruit and the new shoot growth period, lasting 20-30 days. Management work for the first stage: after flowering, apply 0.5 kg of nitrogen fertilizer and 1 kg of phosphorus fertilizer per tree, and within two weeks after flowering spray 0.3% urea once every 7 days. After leaf expansion, spray Yibianjing or Yashijing
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Honeysuckle is an ideal choice for economic development in mountainous areas
I. Development and utilization prospects of honeysuckle (1) Medicinal value Honeysuckle is one of the ten precious and widely used medicinal herbs nationwide. As early as more than 2000 years ago, the "Shennong Bencao Jing" listed it as a superior grade, and recorded that "taken over a long period it lightens the body and prolongs life." Its flower buds contain luteolin, inositol, and chlorogenic acid. Research shows that chlorogenic acid is the main active ingredient for antibacterial and anti-inflammatory effects. It has a significant inhibitory effect on Staphylococcus aureus, hemolytic Streptococcus, Shigella dysenteriae, Salmonella typhi, Salmonella paratyphi, and Pneumococcus.
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In the field of licorice research and development, our country has become the leader
It was recently learned at the founding conference of the Special Committee on Chinese Materia Medica Pharmaceutics of the World Federation of Chinese Medicine Societies and the International Symposium on Chinese Materia Medica Pharmaceutics that our country has successfully applied chiral catalysis technology to the purification of the active ingredients of licorice, increasing it from 3% to 97%, greatly saving medicinal materials. At the same time, following the recent introduction of the Class I new drug and chiral liver drug "Tianqing Ganmei", this shows that our country has already taken a world-leading position in the research, development and innovation of licorice preparations. Chiral technology works by scientifically adjusting the chemical structure arrangement
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What are the growth and development characteristics of Panax notoginseng?
Panax notoginseng seeds have after-ripening characteristics and must be stored under moist conditions to complete physiological after-ripening and germinate. Once the seeds dry out, they lose their viability. A one-year-old seedling grows only 1 palmately compound leaf; in winter the stems and leaves wither, and around the spring equinox of the second year, new shoots emerge from the rhizome above ground. In winter it is dormant, and in spring of the second year it sprouts and grows stems and leaves. If the young bud is damaged that year, it cannot germinate into a seedling the following year and must remain dormant underground for one year; after a new bud forms the following year, a new shoot grows in the spring of the third year. One-year-old plants do not bolt
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Virus-free Technology and Industrial Development of Superior Potato Varieties
Aiming at the main problems currently existing in potato production, this study seized the favorable opportunity of planting-structure adjustment and extensively introduced superior potato varieties from home and abroad. Through trials and market-demand surveys, "Luyin No. 1" was selected as the main cultivar for Qingdao, with Kexin No. 3, Kexin No. 4 and Huayuan 525 as companion cultivars. Through systematic research on virus-free technology, rapid propagation technology and the acclimatization and transplanting technology of virus-free test-tube plantlets, the optimal virus-free protocol for potato was determined: taking 0.1-0.2
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What conditions are needed for the growth and development of straw mushrooms?
1. Nutrition Straw mushroom is a saprophytic fungus that does not contain chlorophyll and cannot carry out photosynthesis to synthesize the nutrients it needs, so these must be supplied from outside. The nutrients required by straw mushroom are mainly carbohydrates and nitrogen-containing compounds. Carbohydrates mainly include sugars such as glucose, sucrose, maltose, starch, hemicellulose and cellulose. Organic nitrogen compounds mainly include peptone, amino acids and urea; inorganic nitrogen compounds include ammonium sulfate and ammonium nitrate. It is generally considered that the carbon-to-nitrogen ratio during the vegetative growth stage
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Taitung County Government Leads the Development of the Red Quinoa Specialty Industry
Taitung red quinoa has become a hit, and Taitung's specialty sightseeing tourism has become a hit along with it! Led by the Taitung County Government, 20 local hotel and accommodation operators, together with the Taitung Branch of the Soil and Water Conservation Bureau of the Council of Agriculture, Executive Yuan, the Taitung County Farmers' Association, and the Taimali Township Farmers' Association...
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