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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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Introduction to the new soybean variety Wuxing No. 2 (formerly Jiguan 52)
Characteristics: Purple flowers, brown pubescence, ovate leaves, sub-indeterminate podding habit. Average growth period 136.5 days, plant height 94.0 cm, 1.8 effective branches, 47.4 effective pods per plant, 107.1 seeds per plant, 19.8 g seed weight per plant, 19.2 g 100-seed weight. According to inoculation identification by the Soybean Research Center of the Jilin Academy of Agricultural Sciences, it is resistant to soybean mosaic virus (SMV) strain 1, moderately resistant to mixed SMV strains, highly susceptible to soybean pod borer, and susceptible to soybean cyst nematode. Resistant
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Control Methods for Malformed Mushrooms in Off-Season Cultivation of Shiitake
In off-season cultivation of shiitake (Lentinula edodes), malformed mushrooms often occur because production conditions are not properly regulated, affecting the commercial quality and value of the mushrooms and greatly reducing production efficiency. The main manifestations of malformed mushrooms and their control measures are: 1. Small and thin caps. This manifests as caps that are both thin and small; even after a long growth period they cannot grow larger, and when eaten fresh they lack the distinctive aroma of shiitake. Control method: for bags that have not undergone color change, conditions must be regulated to induce color change; if the substrate nutrients are insufficient, they can be appropriately supplemented when soaking the bags, and
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Causes of Deformed Mushrooms in Agaricus bisporus and Their Prevention and Control Methods
1. Deformed mushrooms. When ventilation is poor and the carbon dioxide content in the mushroom house exceeds 0.3%, deformed mushrooms are likely to appear. If the fruiting position is too deep, mushrooms growing between the cracks of the coarse soil also tend to be deformed. The key to prevention and control is to pay attention to ventilation and air exchange in the mushroom house. 2. Red root mushrooms. Slightly acidic cultivation material, a high-temperature stage before fruiting, excessive water content in the casing soil layer, excessive application of glucose as a supplemental fertilizer, and poor ventilation in the mushroom house can all easily lead to red root mushrooms. The pH of the compost should be properly adjusted, the water content of the casing soil should be maintained at 22%-25%, watering should be avoided during high temperatures, and the concentration of supplemental fertilizer should be appropriate.
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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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Five Considerations for Formulating Rabbit Feed
Select ingredients according to local conditions. The selected raw materials must not only meet the nutritional needs of domestic rabbits, but also be adapted to local conditions, using locally available forage as much as possible. Pay attention to the diversity of feed. Combining multiple feeds can play a role in nutritional complementation. Pay attention to seasonal differences. In most areas of China, green fodder is scarce in winter and spring, and domestic rabbits are prone to vitamin deficiency, so supplementation should be noted. Pay attention to the palatability of feed. Domestic rabbits like bitter chicory, alfalfa (Medicago sativa), and soybean, and refuse moldy-smelling and fishy-smelling forage. Pay attention to the
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Sanxiangyou 714 rice variety (formerly known as 316a/y0714)
Variety source: Sanxiang A (316AA) × y0714. Characteristics: This variety is an indica three-line hybrid rice. When grown as a double-cropping late rice in the middle and lower reaches of the Yangtze River, the average whole growth period is 123.9 days, 2.7 days later than the control Shanyou 46. Plant height is 111.1 cm; the plants are tall and grow vigorously, with average uniformity. The number of effective panicles per mu is 181,000; panicle length is 24.7 cm; total grains per panicle is 123.4; seed setting rate is 76%; and 1000-grain weight is 30.1 g. Average resistance performance over two years: rice blast grade 9,
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National rice gene breeding platform established with Shanghai taking the lead
According to the latest news released by the Shanghai Academy of Agricultural Sciences, a nationwide rice gene resource and molecular technology breeding platform, established with the lead of units including the Shanghai Agricultural Biological Gene Center, has achieved sharing across society, has mapped a large number of genes related to rice yield, grain quality, stress resistance and other traits, and has bred multiple new rice varieties and new combinations. According to relevant personnel from the Shanghai Academy of Agricultural Sciences, the main goals of current rice variety improvement are to further increase yield potential, improve quality and enhance stress resistance. The history of rice research shows that breakthrough
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Shennong 7 (formerly known as Shennong 9457 rice)
Characteristics: This variety is a conventional japonica-type rice variety. Grown in the early-maturing rice regions of Northeast and Northwest China, its whole growth period is 152.3 days, 7 days later maturing than the control Jiyujing. Plant height is 93.8 cm, total grains per panicle 73.1, seed setting rate 90.4%, and 1000-grain weight 26.2 g. Rice blast resistance grade 7. Main rice quality indicators: head rice rate 68.4%, chalky grain rate 12%, chalkiness degree 1.2%, gel consistency 85 mm, and amylose content 16.3%. Yield performance: In 2001, it participated in the Jiyujing group regional trial of the northern rice region
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What to do about damp-heat in pigs? Adjusting the feed formula is a key measure
1. Adjust the feed formula to increase pig feed intake. 1. Under high-temperature conditions, in order to reduce heat increment and reduce the burden of heat dissipation, feed intake will inevitably decrease, causing insufficient intake of energy, protein and other nutrients in pigs. Making necessary adjustments to the feed formula has become one of the effective measures to overcome heat stress. ① The greater the heat increment of nutrients, the more severe the heat stress after feeding. Oil and fat have a small volume, high net energy value and low heat increment, making them an ideal energy source for pigs under high-temperature conditions. Oil and fat can be added to the feed within 5%
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