Respiration is the main process of metabolism by continuously decomposing substances in the plant. It provides the energy of plant life activities, and the intermediate product is a raw material for synthesizing various major organic substances. Therefore, respiration is the center of plant metabolism. The plant respiration measurement system is an important instrument for measuring the respiration of plants.
Within a certain range, breathing increases with temperature, such as close. The respiratory intensity is very low at °C and reaches a maximum of 35-45°C. However, the maximum respiratory intensity of the temperature is not necessarily the most suitable for breathing, must maintain a higher respiratory intensity for a long time, this temperature is the optimum respiratory temperature, the general plant respiratory optimum temperature of 25 to 35 °C between. For example, the optimum temperature for the pea seedlings' breath is 30°C. Usually, the optimum temperature for leaf respiration is always higher than the optimum temperature for photosynthesis (the optimum photosynthetic temperature is about 25°C). When the temperature is >30°C, the net photosynthetic product Decreased by respiratory depletion, usually when the temperature is high and light is insufficient, the respiration is often greater than photosynthesis, which results in poor crop growth. Therefore, greenhouse crops must pay attention to adjust the room temperature.
Through the determination of the plant respiration measurement system, it was found that respiration and crop cultivation and management: due to oxygen deficiency and CO accumulation in the soil, it is necessary to pay attention to create good soil ventilation conditions to ensure seeds in cultivation and cultivation practices. Roots and normal respiration. The respiration is strong when the seeds germinate, and is generally about 1.5 to 2 times as much as the growth roots. Therefore, it is necessary to supply sufficient oxygen. Before the planting, the post-sowing management must take into consideration that the seed is supplied with sufficient oxygen, and the contradiction between moisture and temperature must be properly resolved. For example, before the planting, the nightmare flowers after sowing are all to loosen the soil, increase the temperature of the ground, circulate the air, reduce the evaporation of soil moisture, promote the unearthing of the cotton seedlings, and thrive.
Within a certain range, breathing increases with temperature, such as close. The respiratory intensity is very low at °C and reaches a maximum of 35-45°C. However, the maximum respiratory intensity of the temperature is not necessarily the most suitable for breathing, must maintain a higher respiratory intensity for a long time, this temperature is the optimum respiratory temperature, the general plant respiratory optimum temperature of 25 to 35 °C between. For example, the optimum temperature for the pea seedlings' breath is 30°C. Usually, the optimum temperature for leaf respiration is always higher than the optimum temperature for photosynthesis (the optimum photosynthetic temperature is about 25°C). When the temperature is >30°C, the net photosynthetic product Decreased by respiratory depletion, usually when the temperature is high and light is insufficient, the respiration is often greater than photosynthesis, which results in poor crop growth. Therefore, greenhouse crops must pay attention to adjust the room temperature.
Through the determination of the plant respiration measurement system, it was found that respiration and crop cultivation and management: due to oxygen deficiency and CO accumulation in the soil, it is necessary to pay attention to create good soil ventilation conditions to ensure seeds in cultivation and cultivation practices. Roots and normal respiration. The respiration is strong when the seeds germinate, and is generally about 1.5 to 2 times as much as the growth roots. Therefore, it is necessary to supply sufficient oxygen. Before the planting, the post-sowing management must take into consideration that the seed is supplied with sufficient oxygen, and the contradiction between moisture and temperature must be properly resolved. For example, before the planting, the nightmare flowers after sowing are all to loosen the soil, increase the temperature of the ground, circulate the air, reduce the evaporation of soil moisture, promote the unearthing of the cotton seedlings, and thrive.
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