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The effect of light intensity on the yield of Ginkgo biloba Ginkgo biloba relies on the energy of solar radiation to convert it into biological energy to sustain life activities. The ecological effects of light on Ginkgo biloba mainly consist of the comparison of light intensity and spectral components. Ginkgo biloba has 90% to 95% of dry matter formed by photosynthesis, and the yield of seed accounts for 30-40% of the total photosynthetic product. The measurement of the light intensity can be measured using a photosynthetic active radiometer.
Ginkgo trees are hi light plants that require strong light to meet their photosynthesis needs. Photosynthesis is the most important physiological activity in production, that is, a process in which sunlight can make organic matter through chlorophyll. About half of the solar radiation is light energy, and these light energy enclose various reasons, and can make the use of plants very little. There is a close correlation between light intensity and photosynthetic intensity, which is generally represented by a saturation curve. When the carbon dioxide absorbed by photosynthesis is equal to the oxygen released by the respiration, it is the light compensation point of the plant, and nutrients cannot be accumulated at this time. However, the value of the light compensation point differs depending on the species, age, and location of the leaves, but also varies depending on the environment. Improving agricultural technology, increasing light intensity, and reducing light compensation points can promote nutrient accumulation and increase dry matter harvest. Such as seeds, fruits and so on. However, there is a limit to the increase in light intensity. After light saturation is reached, the light increases again, and the photosynthetic product may not increase again. The results showed that the photosynthetic rate of three-year-old Ginkgo biloba seedlings absorbed less than 10 milligrams of carbon dioxide per hour per square meter of leaf area, a light saturation point of 35,000 tes, and an optical compensation point of 600 to 700 lux. The 25-year-old and 310-year-old arms; the photosynthetic rate is 15 mg of carbon dioxide per square meter leaf area per hour, the light saturation point is 40,000-50,000 lux, and the light compensation point is 800-1000 s. The photosynthetic rate increased with the increase of light intensity. In one day, the morning intensity was small, peaked at 3 pm, and then gradually decreased, showing a single peak curve. Illumination has a great influence on the growth of Ginkgo biloba tree. When the light intensity is low, the photosynthetic intensity is low, and the accumulation of yeast is low, the growth of branches and roots is poor and the tree vigor is weakened; pests and diseases are easy to occur; due to insufficient organic nutrients, flower bud differentiation and flowering are also affected. Quantity, fruit setting rate and product quality. Ginkgo biloba takes seeds as the economic output. Seed formation takes the total biomass of the plant as the material basis. The amount of seed production depends on the amount of photosynthetic production material distributed into the seeds. That is, the economic yield (seed) of Ginkgo biloba in the biomass. The ratio is called the economic coefficient. Their mutual relations are as follows;
Photosynthetic yield = Photosynthetic area (leaf area × cm2) × Photosynthetic intensity (g dry matter / (cm2 × day)〕 × photosynthesis time (day)
Biological Production = Photosynthetic Production - Consumption Economic Production = Biological Production × Economic Coefficient Economic Coefficient = Economic Yield / Biological Yield According to the above formula, the yield (seed) of Ginkgo biloba is determined by photosynthetic area, photosynthetic intensity, photosynthetic time, photosynthetic product Consumption and distribution utilization (ie, economic coefficient). Generally known as the photosynthetic system's production performance (abbreviated as photosynthetic performance). In order to obtain high seed yield, appropriate changes are made by using light quantum recorders to understand the light intensity.
Ginkgo trees are hi light plants that require strong light to meet their photosynthesis needs. Photosynthesis is the most important physiological activity in production, that is, a process in which sunlight can make organic matter through chlorophyll. About half of the solar radiation is light energy, and these light energy enclose various reasons, and can make the use of plants very little. There is a close correlation between light intensity and photosynthetic intensity, which is generally represented by a saturation curve. When the carbon dioxide absorbed by photosynthesis is equal to the oxygen released by the respiration, it is the light compensation point of the plant, and nutrients cannot be accumulated at this time. However, the value of the light compensation point differs depending on the species, age, and location of the leaves, but also varies depending on the environment. Improving agricultural technology, increasing light intensity, and reducing light compensation points can promote nutrient accumulation and increase dry matter harvest. Such as seeds, fruits and so on. However, there is a limit to the increase in light intensity. After light saturation is reached, the light increases again, and the photosynthetic product may not increase again. The results showed that the photosynthetic rate of three-year-old Ginkgo biloba seedlings absorbed less than 10 milligrams of carbon dioxide per hour per square meter of leaf area, a light saturation point of 35,000 tes, and an optical compensation point of 600 to 700 lux. The 25-year-old and 310-year-old arms; the photosynthetic rate is 15 mg of carbon dioxide per square meter leaf area per hour, the light saturation point is 40,000-50,000 lux, and the light compensation point is 800-1000 s. The photosynthetic rate increased with the increase of light intensity. In one day, the morning intensity was small, peaked at 3 pm, and then gradually decreased, showing a single peak curve. Illumination has a great influence on the growth of Ginkgo biloba tree. When the light intensity is low, the photosynthetic intensity is low, and the accumulation of yeast is low, the growth of branches and roots is poor and the tree vigor is weakened; pests and diseases are easy to occur; due to insufficient organic nutrients, flower bud differentiation and flowering are also affected. Quantity, fruit setting rate and product quality. Ginkgo biloba takes seeds as the economic output. Seed formation takes the total biomass of the plant as the material basis. The amount of seed production depends on the amount of photosynthetic production material distributed into the seeds. That is, the economic yield (seed) of Ginkgo biloba in the biomass. The ratio is called the economic coefficient. Their mutual relations are as follows;
Photosynthetic yield = Photosynthetic area (leaf area × cm2) × Photosynthetic intensity (g dry matter / (cm2 × day)〕 × photosynthesis time (day)
Biological Production = Photosynthetic Production - Consumption Economic Production = Biological Production × Economic Coefficient Economic Coefficient = Economic Yield / Biological Yield According to the above formula, the yield (seed) of Ginkgo biloba is determined by photosynthetic area, photosynthetic intensity, photosynthetic time, photosynthetic product Consumption and distribution utilization (ie, economic coefficient). Generally known as the photosynthetic system's production performance (abbreviated as photosynthetic performance). In order to obtain high seed yield, appropriate changes are made by using light quantum recorders to understand the light intensity.