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机构地区:[1]黑龙江省气象科学研究所
出 处:《黑龙江气象》1998年第3期15-18,共4页Heilongjiang Meteorology
基 金:中国气象局气科院"九五"重大科研项目
摘 要:根据玉米分期播种发育期观测资料和干物质累积及籽粒干物质累积资料,求出玉米发育期的热量指标,在此基础上建立光合作用模型,温度、水分对光和作用影响模型和呼吸及物质转运模型;建立温度对玉米发育进程和物质积累的综合评价模型,并用该模型评价发育进程中温度对发育和物质积累的影响,以及对成熟度和产量的影响,从而为评价温度变化对作物的影响提供依据。This paper calculates corn heat index during the growth period based on observation data in growth periods of corns seeded in different times and data of dry material accumulation and grain dry material accumulation. Then a set of models are established includuing a photosynthesis model, a model evaluating effect on photosynthesis from temperature and moisture,a respiration and material transporting model. Based on all these models a model is built to comprehensively evaluate temperature effect on corn growth and material accumulation as well as on degree of mature and yield per hectare. Finally proof is obtained to evaluate effect on corn from change of temperature.
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